South Gym Renovation Plan

Overview

Renovation of the South Gym into a fully functional multi-purpose space with modern AV capabilities and updated lighting. The space has an attached kitchen and serves a variety of uses:

• Weekdays: School gymnasium
• Evenings/Weekends: Youth events, weddings, funerals, breakfast/lunch/dinner events, meetings

Current State

• Lighting: Old fluorescent tube fixtures throughout the space
• AV: Existing equipment includes a MediaMatrix Xframe88 DSP with MM8802 I/O panel (being replaced by BLU-100s), Midas M32R mixer on a cart, Epson EB-730U ultra-short throw projector (205“ AFF) with motorized screen (bottom at 121.5“ AFF), 2x Danley SH69 speakers (197.5“ AFF), AMX/SVSi video path
• Room dimensions: 1228“ (102’4“) wide × 844“ (70’4“) deep × 225“ (18’9“) to ceiling rafters, 281“ (23’5“) to metal roof. Brick walls all around to 8’, then wood framing to ceiling. Ceiling trusses are 48“ (4’) high, 52“ edge-to-edge spacing.
• Control room: An old control room attached to the existing second floor protrudes into the gym ceiling space. It will be removed as part of the renovation, freeing up ceiling area (currently prevents two of the eight fluorescent lighting rows from running full-length).
• Scoreboard: Robomatic MPB200-1A (120VAC, 60Hz, 5A) — will not be retained
• Intercom/bell system: School intercom and automated bell system. 16 speakers currently installed (originally 21 — 5 missing need to be restored). Controller location, wiring path, and speaker model unknown.
• Security camera: One PoE IP camera on the southwest wall, Ethernet-fed (likely from above). Must be removed before renovation and reinstalled after — cable re-run is part of our network scope.
• Integration: Currently not connected to the main church AV infrastructure

Design Principles

• Independent with facility connectivity – the South Gym audio system is self-contained and does not join the facility’s Dante network. AMX provides control and the ability to receive audio/video from the Auditorium if needed in the future.
• Flexibility – the space must quickly adapt between use cases (school gym, events, weddings, youth nights)
• Simplicity – the system should be operable by volunteers with minimal training
• Reliability – equipment should be durable and suited to a gymnasium environment

Scope

In Scope

• AV system design and installation (audio, video, control)
• Lighting upgrade (replace fluorescent tubes with a modern solution)
• Network infrastructure to support AV and future facility integration
• Intercom/bell system — restore missing speakers and ensure adequate coverage for the post-renovation space

Out of Scope

• Structural or architectural changes
• HVAC or mechanical systems

Project Phases

Related Documents

• Audio Plan – BLU-100 / M32R audio system
• Video Display Plan – projector (near-term) and LED displays (long-term)
• Control Plan – AMX control, presets, and overflow routing
• Networking Plan – switches, VLANs, and cabling
• Lighting Plan – SmartPack dimming and fixture upgrade
• Rack Plan – rack layout and power budget
• Electrical Plan – room power panel sizing and circuit requirements
• Equipment Reference – detailed specs for all equipment

Open Questions

• What electrical capacity is available from the main building service? (See Electrical Plan for new panel sizing.)
• What is the budget range?
• Will we be removing the radiative heading system with the new air handler? Will we be framing out the brick wall, or just putting drywall directly on it? (this affects whether anything we mount on the wall will be surface-mount, or will be flush-mount).
• Intercom/bell system: What controller/head-end drives the system, and where is it located? What is the existing speaker model? Where does the wiring enter the gym? What bell system will be used post-renovation — same system with restored speakers, or a new system entirely?

South Gym Audio Plan

Goals

• Provide clear, even audio coverage for spoken word and music playback
• Operate as an independent, self-contained audio system

Current State

The existing DSP is a MediaMatrix Xframe88 (1U) with an MM8802 I/O panel (1U). This is being replaced by two BSS BLU-100 units because:

• End of life: The Xframe88 is a legacy platform (Motorola 56002 DSPs) that is no longer supported or serviceable. Replacement parts and expertise are increasingly unavailable. (See equipment reference for specs.)
• Better AMX integration: The BLU-100 supports direct control via IP or serial, allowing AMX to recall presets, adjust levels, and select inputs natively. The Xframe88’s control interface is more limited and harder to integrate with the current AMX system.
• More capable DSP: The BLU-100 offers modern DSP processing, flexible routing, and the ability to act as the system’s mux point – accepting M32R output as an input and switching between sources under AMX control. (See equipment reference for specs.)

Architecture

The South Gym audio system has two operating modes:

• Base mode (BLU-100): For everyday use – school gym, meetings, announcements, background music for dinner events. BSS BLU-100 processors handle all audio processing and routing, controlled entirely by AMX. No operator required.
• Complex event mode (Midas M32R): For live-mixed events – weddings, funerals, youth worship, concerts, banquets with live music. The existing Midas M32R mixer is the foundation, operated by a live sound volunteer.

The BLU-100s are the always-on backbone of the system. The M32R is patched in when an event calls for full live mixing capability.

Why two systems? The BLU-100s provide preset-driven, unattended operation for everyday use, but they can’t provide the real-time fader-per-channel mixing that a live operator needs for complex events. The M32R fills that role and is an existing investment that works well – there’s no reason to replace it. (See equipment reference for M32R specs.)

Signal Path

The rack-mounted DL16 is the central physical I/O point in the system. Wireless mic receivers connect to its inputs, and amplifier feeds come from its outputs. It connects to the M32R via AES50 when the M32R is in use.

Physical connectivity

 SOURCES                    BLU-100 #1 (U24)              BLU-100 #2 (U25)           RACK DL16 (U26-28)
 ───────                    ────────────────              ────────────────           ──────────────────
                           ┌──────────────────┐         ┌──────────────────┐       ┌──────────────────┐
 MIPRO #1 Ch A ──in 1──►  │                  │         │                  │       │                  │
 MIPRO #1 Ch B ──in 2──►  │  Inputs 1-8:     │ BLU Link│  Outputs 1-8:   │       │  Inputs 1-8:     │
 MIPRO #2 Ch A ──in 3──►  │  all sources     ├────────►│  all DL16 feeds  ├──────►│  sources from #2 │
 MIPRO #2 Ch B ──in 4──►  │  (analog)        │         │  (via BLU Link)  │       │                  │
 Arylic LP10 L ──in 5──►  │                  │         │                  │       │  (AES50 A to M32R│
 Arylic LP10 R ──in 6──►  │  Inputs 9-10:    │ BLU Link│  Inputs 1-2:    │       │   for mixing)    │
 N4321 SVSi L  ──in 7──►  │  M32R return  ◄──┼─────────┤  M32R return    │◄──────┤  Outputs 1-2:    │
 N4321 SVSi R  ──in 8──►  │  (from #2)       │         │  (from DL16)    │       │  M32R main L/R   │
                           │                  │         │                  │       │                  │
                           │  DSP: EQ, mix,   │         └──────────────────┘       │  Outputs 3-4:    │
                           │  MUX, limiters   │                                    │  monitor mix 1/2 │
                           │                  │                                    └────────┬─────────┘
                           │  Outputs:        │                                             │
                           │  1: ceiling L  ──┼──► Amp #1 Ch A ──► Ceiling Speaker L        │
                           │  2: ceiling R  ──┼──► Amp #1 Ch B ──► Ceiling Speaker R        │
                           │  3: sub (mono) ──┼──► Amp #2 (parallel) ──► Subwoofers         │
                           │  4-8: spare      │                                             │
                           └──────────────────┘       Amp #3 Ch A ──► Monitor(s) mix 1  ◄───┤
                                                      Amp #3 Ch B ──► Monitor(s) mix 2  ◄───┘
                                                         ▲
                                                         │ (daisy-chain additional
                                                         │  passive monitors)

                           ┌──────────────────┐
                           │  Midas M32R      │       ┌──────────────────┐
                           │  (cart)          │       │  DL16 (portable) │
                           │                  │ AES50 │  (stage)         │
                           │  AES50 A ◄───────┼───────┤  rack DL16       │
                           │  AES50 B ◄───────┼───────┤                  │
                           │                  │       │  DL16 (portable) │
                           │  Operator mixes  │       │  keyboards,      │
                           │  all inputs      │       │  guitars, etc.   │
                           └──────────────────┘       └──────────────────┘

 FAILURE MODES:
 ─────────────
 #2 fails → M32R inoperable; base mode (#1 sources → amps) still works
 #1 fails → base mode lost; re-cable DL16 outputs directly to amps, M32R drives room

Base mode (BLU-100)

For everyday use – no operator, AMX-controlled:

1. Wireless mic receivers are split to the BLU-100 inputs
2. Arylic LP10 feeds the BLU-100 as a line-level input (background music via AirPlay 2, Spotify Connect, Bluetooth, etc. – see equipment reference)
3. BLU-100s process the audio (EQ, levels, routing) under AMX control
4. BLU-100 outputs feed the amplifiers (via MUX)
5. Amplifiers drive the speakers

The rack DL16 and M32R are not in the active signal path in this mode.

Complex event mode (M32R)

For live-mixed events – operator at the M32R:

1. Wireless mic receivers feed BLU-100 #1, which routes mic audio to the rack DL16 via BLU Link through BLU-100 #2
2. Rack DL16 sends mic audio to the M32R via AES50
3. Portable DL16 on stage sends instrument inputs to the M32R via AES50 port B (independent of the rack DL16 on port A)
4. M32R operator mixes all inputs
5. M32R sends main mix back to the rack DL16 via AES50
6. Rack DL16 outputs 1–2 (main L/R) feed BLU-100 #2, which forwards to #1 via BLU Link for MUX switching to ceiling and sub amps
7. Rack DL16 outputs 3–4 (two independent mono monitor mixes) feed amp #3 directly
8. Amplifiers drive the speakers

Multiplexing (MUX)

The Peavey Pro-LITE 5.0 amps have a single combo XLR/1/4“ input per channel – they can’t accept two sources and switch between them. This means the mux must happen upstream of the amps.

Approach: BLU-100 internal routing. The M32R/DL16 output feeds into the BLU-100s as an input. The BLU-100 DSP selects between its own processing and the M32R passthrough, controlled by AMX. The BLU-100s are the single point feeding the amps in both modes.

This approach was chosen for three reasons:

1. It’s the only viable option for switching – the Pro-LITE 5.0 has a single combo XLR/1/4“ input per channel (see equipment reference), ruling out amp-level input switching. An external AMX-controlled audio switcher was ruled out as unnecessary complexity given that the BLU-100’s internal routing can handle the switching natively.
2. Equipment protection – routing the M32R output through the BLU-100s allows limiters to be applied to the M32R feed before it reaches the amplifiers. This protects the speakers and amps from damage due to operator error at the M32R (e.g., feedback, accidental hot levels).
3. Consistent output processing – regardless of which source is active, the BLU-100s can apply system EQ, delay, and zone routing to everything going to the amps.

BLU-100 to amp cabling

Balanced connections are required between the BLU-100 outputs and amp inputs. The BLU-100s are on UPS-isolated ground (via the RLNK) while the amps are on building ground (dedicated panel circuits). An unbalanced connection would allow the ground potential difference to appear as audible hum. Both devices support balanced I/O (BLU-100 balanced outputs, Pro-LITE 5.0 balanced combo XLR inputs at 20kΩ), so this is straightforward – use XLR cables, not 1/4“ TS. See Electrical Plan – Grounding for the full ground boundary analysis.

Two of the three amps are fed from BLU-100 #1 outputs:

• Amp #1 (ceiling speakers): Stereo — BLU-100 #1 output 1 to Ch A (left), output 2 to Ch B (right). Each channel drives one ceiling speaker.
• Amp #2 (subwoofers): Mono — BLU-100 #1 output 3 to one input; amp in parallel input mode (one input drives both channels, both channels drive subwoofers). The BLU-100 applies an LPF crossover before this output.

Ceiling speaker capacity: The current system has 2x Danley SH69 (4Ω nominal; minimum impedance not published — the spec sheet includes an impedance response curve but does not state a numeric minimum) — one per channel at 4Ω. The amp supports up to 2 SH69s per channel (2Ω parallel), for a maximum of 4 ceiling speakers on one amp.

At 2 per channel, the real-world impedance dip (typical for a 4Ω nominal speaker: somewhere around 3–3.5Ω, but unconfirmed for the SH69 — request the impedance curve data from Danley or measure it) means the paralleled pair could dip to ~1.5–1.75Ω at certain frequencies. Whether this triggers the amp’s protection (ACL) depends on how hard the amp is working — the limiter threshold in the BLU-100 determines the maximum SPL and therefore the maximum current the amp must deliver.

Maximum SPL at the farthest seat (30’ / 9m from nearest speaker with 4 speakers distributed across the 102’ width). SH69 sensitivity: 96 dB (1W/1m into 4Ω, derived from the manufacturer’s 99 dB at 2.83V/1m by subtracting 3 dB for the 4Ω load — see equipment reference). Inverse square loss at 9m: 19 dB.

With 4 SH69s on one amp, the system can produce approximately 103–104 dB SPL clean at the farthest seat before transient peaks begin triggering ACL at the impedance dip. A BLU-100 limiter set to keep output below this threshold ensures clean, protection-free operation. The 103–104 dB figure assumes the BLU-100 limiter is active and managing peak demands — without it, music crest factors (10–15 dB for live music) would push transient peak power well beyond the amp’s burst capacity at the 1.75Ω impedance dip. For reference: 100 dB covers speech, background music, and moderate-level events comfortably; 103 dB covers energetic live music for all realistic use cases in this room. Sustained levels above 105 dB in a ~7,200 sq ft brick-walled gym with no acoustic treatment would be uncomfortably loud regardless of amplifier headroom.

Note on room acoustics: The power calculations above use the free-field inverse square law (SPL drops 6 dB per doubling of distance). In this room — brick walls, rubber floor, no acoustic treatment — the reverberant field will add significant energy at the farthest seat, meaning actual SPL will be higher than the table predicts. This makes the power and headroom figures conservative (safe direction for hardware sizing). However, the added energy is reverberant (smeared in time), which degrades speech intelligibility — the room will be louder and less clear than the numbers suggest. Acoustic treatment (hanging baffles, fabric panels) would reduce the reverberant field, improving intelligibility without requiring more amplifier power. Until RT60 measurements are taken (see open questions), the free-field model is the appropriate conservative baseline for amplifier and limiter sizing.

Amp #3 (floor monitors) is not fed from the BLU-100. Floor monitors are only active during M32R complex events, where the M32R operator controls the monitor mixes. DL16 outputs 3–4 feed amp #3’s two channels as independent mono monitor mixes — the operator can send a different mix to each channel (e.g., a speaker’s monitor with more of their own voice, and a musician’s monitor with more instrument mix). In base mode, amp #3 is idle. See rack DL16 I/O allocation.

The Pro-LITE 5.0 has line-level through outputs (1/4“ jacks) that can pass signal to another amp (see equipment reference). For amps #1 and #2, these are not used.

Monitor daisy-chaining: The existing monitors (2x Community XLT41 + 2x Community CSX28-S2, all 8Ω) daisy-chain via Speakon loop-through connectors. The current 4 monitors fit comfortably at 2 per channel (4Ω load). Additional 8Ω passive monitors can be added up to 4 per channel (2Ω, the amp’s rated minimum) — 8 monitors total across both channels.

At typical stage monitor levels (~100 dB SPL), each speaker draws ~2W — the amp is delivering well under 1% of its output capacity regardless of impedance. Thermal stress, power draw, and supply current are all negligible. The 2Ω minimum impedance rating is the only real constraint: below 2Ω, peak current on transients (drum hits, sharp vocals) exceeds the output stage’s current-limiting threshold, causing the amp’s protection circuits to clamp the output and degrade the audio.

BLU-100 I/O Allocation

Each BLU-100 has 12 analog inputs and 8 analog outputs on Phoenix/Combicon connectors, plus a 48-channel BLU Link digital audio bus (2x RJ45). The two units connect via BLU Link (Cat 5e, up to 100m) to share audio channels between them. See equipment reference for full I/O specs.

BLU-100 #1 (U24) — Primary

BLU-100 #1 handles all active analog I/O and runs the core DSP design in London Architect (input mixing, EQ, dynamics, zone routing, MUX switching, output limiting).

Inputs:

Outputs:

10 of 12 inputs and 3 of 8 outputs are allocated. Inputs 9–10 receive the M32R main mix via BLU Link from #2 (no direct analog connection to the DL16).

Floor monitors (amp #3) are not fed from the BLU-100. They are driven directly from the rack DL16 outputs during M32R complex events — the M32R operator controls the monitor mix. In base mode (no M32R), floor monitors are not active. See rack DL16 I/O allocation.

BLU-100 #2 (U25) — DL16 Feed & Expansion

BLU-100 #2 connects to #1 via BLU Link (Cat 5e, IN/OUT daisy-chain). It owns all I/O that connects to the M32R system via the rack DL16 — both the source feeds (outputs to DL16 inputs) and the M32R return (DL16 outputs to #2 inputs). Wireless mic signals, N4321 SVSi audio, and Arylic LP10 background music enter #1’s inputs, travel across BLU Link, and exit #2’s analog outputs to the DL16. The M32R main mix return enters #2’s analog inputs and is forwarded to #1 via BLU Link for MUX switching. This consolidates all M32R-related I/O on a single unit — if #2 fails, the M32R is inoperable but base mode continues; if #1 fails, base mode is lost but the M32R can drive the room via emergency re-cabling (see failure impact below).

Outputs:

Inputs:

Latency: Routing through #2 adds ~1.6ms to the M32R mic path (BLU-100 A/D at 0.77ms + BLU Link transport at 0.23ms + D/A at 0.60ms). The full end-to-end complex event path (mic → BLU-100 #1 → BLU Link → #2 → DL16 → AES50 → M32R → AES50 → DL16 → #2 → BLU Link → #1 → amp) involves 3 A/D and 3 D/A conversions plus M32R DSP processing, totaling approximately 7ms. Both figures are well within acceptable limits for live sound reinforcement (~10ms perceptible threshold for monitoring, ~20-30ms for reinforcement).

Failure impact:

• #2 fails: The DL16 loses all source feeds (mics, N4321, LP10) and the M32R return has no path into the system. Complex event mode (M32R) is completely inoperable. Base mode still works — #1 has all sources on its own analog inputs and feeds the amps directly.
• #1 fails: Base mode is lost (all amp outputs are on #1). The M32R’s I/O paths through the BLU-100 chain are broken at both ends — rack DL16 source feeds (mics, N4321, LP10) are dead since they depend on BLU Link from #1, and the M32R return has no output path to the amps. Emergency re-cabling is required: (1) Re-cable DL16 outputs 1–2 directly to amp #1/#2 inputs with XLR cables, bypassing both BLU-100s entirely. (2) Re-patch MIPRO receiver XLR outputs directly to rack DL16 inputs 9–16 to restore wireless mic capability through the M32R (bypassing the dead BLU Link chain). The M32R operator mixes and drives the amps directly through the DL16. This sacrifices BLU-100 limiter protection and system EQ (the operator is fully responsible for levels), but it gets audio to the speakers with no software reconfiguration. The M32R operator would use the portable DL16 for stage instruments via AES50 B. Monitor feeds (DL16 outputs 3–4 to amp #3) are unaffected since they already bypass the BLU-100s.

Wireless Mic Routing to DL16

Each MIPRO ACT-727a provides per-channel balanced XLR outputs at line level. These connect directly to BLU-100 #1 inputs (no Y-split cables). To feed the rack DL16 for M32R complex event mode, the mic signals are routed digitally from #1 to #2 via BLU Link, then out #2’s analog outputs to the DL16 inputs.

Why route through the BLU-100 instead of Y-split cables: All routing decisions live in the London Architect DSP design rather than in cable topology. Future changes (adding a mic channel, adjusting gain before the DL16, rerouting a source) happen in software, not by re-cabling. Standard point-to-point cables are used throughout — no custom Y-splits.

The mixed outputs on each receiver are unused. The front-panel headphone jack on each receiver serves as a monitoring point during troubleshooting.

Rack DL16 I/O Allocation

The rack-mounted DL16 (U26–28) is the physical I/O hub for the M32R path. It connects to the M32R via AES50 (port A on the M32R).

Inputs (16 available):

Outputs (8 available):

AES50 routing (configured in the M32R Routing page — not the default; must be set during commissioning and saved as a scene/snippet):

• DL16 inputs 1–16 appear as M32R remote inputs via AES50 A, channels 1–16 (this is the default)
• M32R main L/R bus output routes to AES50 A, channels 1–2, which map to DL16 outputs 1–2 (requires explicit routing configuration)
• DL16 outputs 1–2 cable to BLU-100 #2 inputs 1–2 (balanced XLR → Phoenix); #2 forwards to #1 via BLU Link
• Two M32R mono mix buses route to AES50 A, channels 3–4, which map to DL16 outputs 3–4
• DL16 outputs 3–4 cable directly to amp #3 Ch A/B (two independent monitor mixes, balanced XLR)

The portable DL16 (stage) connects to M32R AES50 port B, providing 16 additional inputs for stage instruments. It is not cabled to the rack — it connects via the AES50 cable in the M32R umbilical.

Requirements

• Full-room coverage for spoken word (meetings, announcements, ceremonies)
• Music playback capability (background music for events, youth nights, wedding receptions)
• Wireless microphone support (handheld and lapel)
• AMX-controlled presets on the BLU-100s for unattended operation
• Ability to switch between BLU-100 base mode and M32R live mixing mode

Considerations

• Room acoustics: Gymnasiums are notoriously reverberant. Acoustic treatment or speaker selection should account for this. The room is 1228“ (102’4“) wide × 844“ (70’4“) deep × 225“ (18’9“) to ceiling rafters, 281“ (23’5“) to metal roof. Brick walls all around to 8’, then wood framing to ceiling. Dark green rubber gym floor, no windows, and no acoustic treatments — all hard, reflective surfaces. See reverberant field analysis below — this room’s reverberation is likely the single biggest factor affecting audio quality.
• Room partitions: No operable walls, partitions, or windows. All walls are fixed.
• HVAC and reflections: No bleachers or in-room HVAC units. The air handler is external with supply/return vents into the room. Ceiling-mounted circulation fans are present. Flutter echo assessment is pending on-site measurement.
• Stage position: Fixed at the front of the room, under the projection screen / future LED display(s). Monitor/fill speaker requirements are TBD.
• Speaker coverage modeling: EASE Focus 3 (free) will be used for speaker coverage prediction — SPL distribution, frequency response, and coverage uniformity. DXF floor plans can be imported as a background reference for tracing room geometry. Speaker manufacturer GLL files provide the directivity data. Room dimensions are known (102’4“ × 70’4“); speaker model is Danley SH69 — coverage modeling can proceed once a Danley GLL file is obtained.
• Speaker placement: Ceiling-mounted or wall-mounted speakers to keep the floor clear for sports and events
• Durability: Equipment must withstand a gym environment (temperature swings, ball impacts on grilles, etc.)
• Mic routing to DL16: Wireless mic receivers connect directly to BLU-100 #1. The mic signals are routed digitally to BLU-100 #2 via BLU Link, then out #2’s analog outputs to the DL16 for the M32R path. No Y-split cables — all routing is in London Architect. See wireless mic routing for details.
• Balanced connections by default: All analog audio connections will use balanced wiring unless there is a compelling reason not to. This applies regardless of cable length – even short in-rack runs. Balanced connections reject common-mode noise and eliminate ground loop hum at ground boundary crossings (see Electrical Plan – Grounding).
• AMX control of BLU-100: AMX communicates with the BLU-100 via serial or IP to recall presets, adjust levels, and select inputs.

Reverberant Field Analysis

This room’s reverberation is likely the single biggest factor affecting audio quality — more than speaker selection, amplifier power, or DSP processing. The SPL and power calculations in the ceiling speaker capacity section use the free-field inverse square law, which is conservative for hardware sizing but does not reflect how the room actually behaves.

The problem: direct field vs. reverberant field

Sound at any listener position is the sum of two components:

• Direct field: Sound traveling straight from speaker to listener. Follows inverse square law (−6 dB per doubling of distance). This is the “clean” signal with good speech intelligibility.
• Reverberant field: Sound that has bounced off walls, ceiling, and floor before reaching the listener. In a hard-surfaced room, this energy is roughly constant throughout the room regardless of distance from the speaker. It is smeared in time and degrades speech clarity.

The critical distance (Dc) is where the two are equal. Closer than Dc, the direct field dominates (good clarity). Beyond Dc, the reverberant field dominates (muddy, less intelligible).

Estimated critical distance for this room

Dc = 0.141 × √(Q × R)

where:
  Dc = critical distance (feet when R is in sq ft; meters when R is in sq m)
  R = S × ā / (1 - ā)           room constant (sq ft)
  S = total interior surface area (sq ft)
  ā = average absorption coefficient (0 to 1, higher = more absorptive)
  Q = speaker directivity factor  (higher = more focused)

The constant 0.141 is 1/√(16π), which is unit-independent — it works in
both imperial and metric as long as R and Dc use consistent units.
(Note: an earlier version of this document used 0.057, which is the
constant from a different formula — Dc = 0.057 × √(Q × V / T60) — where
V is room volume in cubic meters and T60 is reverberation time in seconds.
That constant does not apply when using room constant R.)

Room surfaces:

Estimated values:

• S ≈ 20,956 sq ft
• ā ≈ 0.07 (mid-range estimate for untreated hard surfaces)
• R = 20,956 × 0.07 / (1 − 0.07) = 1,467 / 0.93 ≈ 1,577 sq ft
• Q ≈ 8–10 for the SH69 (60° × 90° horn — much more directional than a typical cone speaker at Q ≈ 2). The solid-angle calculation for a 60° × 90° horn gives Q ≈ 8.7; Danley synergy horns may achieve Q ≈ 10 at mid-to-high frequencies due to their multi-driver design. Using Q = 10 as the estimate:
• Dc = 0.141 × √(10 × 1,577) = 0.141 × √15,770 = 0.141 × 125.6 ≈ 17.7 feet (5.4m)

At the farthest seat (~30 ft / 9m), the listener is roughly 1.7× beyond the critical distance. The reverberant field dominates but not as overwhelmingly as a much shorter critical distance would imply. The inverse square law is still degraded at this range — actual SPL will be higher than the free-field table predicts, and the reverberant energy degrades intelligibility.

Impact

• Hardware sizing (safe): The SPL table’s power estimates are conservative. The system needs less electrical power than predicted to achieve a given SPL target, because the reverberant field adds energy. Amplifier and limiter sizing based on the free-field model has built-in safety margin.
• Speech intelligibility (problem): The extra energy is reverberant — smeared in time, arriving from all directions. This degrades the Speech Transmission Index (STI). In untreated gyms this size, STI is typically 0.3–0.4 (solidly in the “poor” category per IEC 60268-16, where “poor” = 0.30–0.45). A target of 0.50+ (“fair,” with 0.60+ being “good”) is needed for reliable speech comprehension in a meeting or ceremony context.
• RT60 estimate: For an untreated brick/rubber gym of this volume (~135,000 cubic feet), the expected RT60 is approximately 3–6 seconds at mid frequencies. Good speech intelligibility requires RT60 under 1.5 seconds, ideally under 1.0 second.

What can be done

The SH69’s high directivity (Q ≈ 8–10) already helps — it puts more energy on the audience and less on the walls compared to conventional cone speakers (Q ≈ 2). This roughly doubles the critical distance versus an omnidirectional source. But even with good speaker directivity, the room’s absorption is too low for acceptable intelligibility without treatment.

Acoustic treatment options:

Target: To halve RT60, the total absorption must be doubled (Sabine’s equation: RT60 is inversely proportional to total absorption). With current absorption estimated at ~1,467 sabins (giving RT60 ≈ 4.5s), halving RT60 to ~2.25s requires roughly 1,500 additional sabins — approximately 90–125 ceiling baffles at 12–16 sabins each, or an equivalent mix of baffles and wall panels. This is a substantial treatment scope.

More realistically, a phased approach:

The exact quantity depends on the measured RT60 — start with measurement. (An earlier version of this section understated the treatment quantity needed by roughly 4×, confusing incremental absorption with the multiplicative relationship in Sabine’s equation.)

Next steps

1. Perform the REW measurement session (see below).
2. Model with EASE Focus 3 — once RT60 is known, the coverage model can include the reverberant field contribution and predict STI across the listening area. This drives both speaker placement and treatment quantity decisions.
3. Budget and scope acoustic treatment — treatment quantity follows directly from the RT60 measurement and the target STI. This is an open question (see open questions — room acoustics).

REW Measurement Session

All measurements below use REW (Room EQ Wizard) — free, cross-platform. One site visit with a laptop, a USB audio interface, and a calibrated measurement mic can cover everything. Schedule during a typical school day so HVAC and building noise are representative.

Equipment needed

Measurements to perform

1. RT60 (reverberation time)

• What: Time for sound to decay 60 dB after the source stops.
• Method: REW sweep or impulse response at 3–5 positions across the listening area (center, quarter-points, near walls). REW calculates T20/T30 (extrapolated RT60) per octave band from the impulse response.
• Why: Determines how much acoustic treatment is needed and directly feeds the critical distance and STI calculations in the reverberant field analysis above. This is the single most important measurement — everything else depends on it.
• Positions: Measure from the expected speaker locations to at least 3 listener positions (front third, middle, rear third of the room).

2. Ambient noise floor

• What: Background SPL with HVAC running, no program audio.
• Method: SPL meter (or calibrated phone app) at the mix position and at the farthest seat. Record A-weighted (dBA) and C-weighted (dBC) readings, or use REW’s RTA mode for a full spectrum view. Let it average for at least 30 seconds.
• Why: Sets the minimum level the system must exceed for intelligibility. If the noise floor is 50 dBA, speech needs to be at least 65 dBA (15 dB SNR) at every seat. Also identifies whether HVAC rumble is concentrated at specific frequencies that could mask speech.

3. SH69 impedance curve

• What: Impedance magnitude vs. frequency for the installed SH69 speakers.
• Method: Disconnect speaker from amp. Wire the interface output through the 10Ω reference resistor to the speaker. REW’s impedance measurement mode sweeps and plots the curve. Record the minimum impedance value and the frequency at which it occurs.
• Why: The SH69’s minimum impedance is not published. Two SH69s in parallel per amp channel present a load at or below the Pro-LITE 5.0’s 2Ω minimum. The actual impedance dip determines whether the amp’s protection circuits will engage at full power. If the minimum is above ~3.5Ω, the parallel pair stays above ~1.75Ω and is likely fine with BLU-100 limiting. If it dips lower, the amp channel count or limiter threshold needs to be reconsidered.
• Measure both speakers — they should match closely, but if one has a damaged driver or crossover component the curves will diverge.

4. Frequency response at listening positions (optional, but valuable if REW is already set up)

• What: SPL vs. frequency at listener ear height.
• Method: Play a REW sweep through the installed speakers (one at a time, then both) and measure at the same 3–5 positions used for RT60. REW generates the frequency response and can overlay all positions.
• Why: Shows coverage uniformity across the room, identifies frequency-dependent dead spots or comb filtering, and establishes the baseline for room EQ in the BLU-100. Doing this before and after acoustic treatment quantifies the treatment’s effect.

After the measurements

Equipment

Wireless Frequency Coordination

The MIPRO ACT-727a receivers cover 482-698 MHz across three switchable bands, each 72 MHz wide:

ISED Regulatory Restrictions

ISED’s Decision on the Technical, Policy and Licensing Framework for Wireless Microphones and SAB-003-17 define the following rules for the 470-698 MHz range:

Impact on the ACT-727a:

• Band 5UA (482-554 MHz): Safe. Entirely within the legal 470-608 MHz range. This is the primary operating band.
• Band 5US (554-626 MHz): Mostly safe. 554-608 MHz is legal (54 MHz). The top 18 MHz of the band contains a mix of restricted, legal, and prohibited spectrum: channel 37 at 608-614 MHz (6 MHz, avoid – radio astronomy and medical telemetry), guard band at 614-617 MHz (3 MHz, legal), and prohibited auction spectrum at 617-626 MHz (9 MHz, prohibited).
• Band 6UA (626-698 MHz): Mostly prohibited. Only 11 MHz (652-663 MHz duplex gap) is legal. The remaining 61 MHz is auctioned mobile broadband spectrum. Operating in this band risks regulatory violation and interference from/to LTE/5G base stations.

Compliance concern: The ACT-727a’s ACT auto-scan selects clear RF channels based on signal presence, not regulatory compliance. It does not know which frequencies are legally prohibited in Canada. If set to band 6UA, the auto-scan could select a frequency in the 617-652 or 663-698 MHz prohibited ranges simply because no strong signal is detected there yet. Restrict both receivers to band 5UA or 5US only. Band 6UA should not be used unless frequencies are manually set within the 652-663 MHz duplex gap and verified against ISED rules.

Edmonton Market UHF TV Stations

The following UHF broadcast stations in the Edmonton market (which includes Sherwood Park) must be avoided. Source: RabbitEars Edmonton market.

Each TV channel occupies 6 MHz. The ACT auto-scan should detect and avoid these as occupied channels. With 4 stations in band 5UA, the usable spectrum in that band is reduced from 72 MHz to ~48 MHz — still ample for 4 wireless mic channels (each needs ~200 kHz).

Multi-Receiver Coordination

The ACT-727a has pre-calculated intermod-free preset frequency groups. The exact group count and per-group channel structure need to be verified against the ACT-727a manual — the group details previously listed here were sourced from ACT-727 (non-“a”) documentation and may not match the 727a. (The equipment-reference.md cites “15 groups + 1 user-defined group” from the ACT-727 product page; neither figure is confirmed for the 727a.)

For a fixed installation with 2 receivers (4 channels), preset groups are the right approach — not auto-scan. Set both receivers to the same group (e.g., Group 1) and assign different channel numbers: channels 1-2 on receiver #1, channels 3-4 on receiver #2. Since the channels within a group are pre-calculated by MIPRO to be intermod-free, they coexist cleanly. Set once during commissioning and leave it.

The auto-scan is designed for portable use in unknown RF environments. For a fixed install where all wireless is controlled, the preset groups give deterministic, repeatable results.

MIPRO also offers RCS27 software (connects via the rear RJ-11 port) for PC-based monitoring and control, and the newer RCS2.Net for network-based coordination of up to 64 channels — but both are overkill for 4 channels in a fixed install.

Cross-facility coordination with the auditorium’s wireless systems is unlikely to be needed — the auditorium is a few hundred feet away through concrete/brick walls, which should put any signal well below the receiver noise floor. Confirm with a walk test during commissioning (see below).

Recommended Operating Configuration

1. Set both receivers to band 5UA (482-554 MHz) and the same preset group. Band 5UA has the most usable legal spectrum and sits entirely within the ISED-approved 470-608 MHz range.
2. Assign channel numbers during commissioning: channels 1-2 on receiver #1, channels 3-4 on receiver #2 (within the same group). Verify selected frequencies do not land on the 4 local TV stations (RF 16, 17, 25, 27 — see table above). The preset groups should avoid these automatically, but confirm during setup.
3. Band 5US (554-626 MHz) is the secondary option if band 5UA proves unusable. Manually verify selected frequencies stay below 608 MHz.
4. Do not use band 6UA unless frequencies are manually locked to the 652-663 MHz duplex gap.
5. Walk test for cross-facility isolation: During commissioning, turn on the auditorium’s wireless systems and verify no interference is received on the gym receivers. Walk the gym with a transmitter on each band while monitoring the auditorium receivers as well, to confirm isolation in both directions.

Open Questions

Room Acoustics & Speaker Design

• Has any acoustic measurement been done (RT60, STI), or is there a baseline reverberation estimate?
• Is there budget or structural willingness for acoustic treatment (hanging baffles, fabric panels, banners), or must the speaker design compensate for the room as-is?
• Can the ceiling structure support pendant-hung or flown speakers, or is wall mounting the only option?
• Are there existing speaker mounting points, conduit, or wire pulls reusable from the previous system?
• Room aspect ratio – does it favor a center cluster, a stereo pair, or a distributed grid?
• Is stereo imaging a priority for any use case, or is mono coverage uniformity more important?
• What is the maximum tolerable SPL variation across the listening area (+/-3 dB, +/-6 dB)?
• What is the target max SPL at the mix position or far seat for live music events?
• What is the ambient noise floor during a typical school day (HVAC, gym activity)?
• During live music with the M32R, does the PA carry the full mix, or does stage volume from backline/drums compete?
• If subwoofers are added, where can they be placed while keeping the floor clear for sports?
• Has cardioid subwoofer configuration been considered to reduce rear-wall reflections?
• What low-frequency extension is needed – 80 Hz (speech reinforcement) or 40-50 Hz (youth worship, music)?
• What grille material or protective cage is needed to withstand direct ball contact?
• Is the space climate-controlled during off-hours, or must speakers handle temperature extremes?

Signal Path & DSP

• What is the BLU-100 DSP processing chain order (gain trim, EQ, compressor, limiter)?
• What target output level (dBu) should the BLU-100 deliver to the Pro-LITE 5.0 inputs at nominal program level? What is the amp’s rated input sensitivity?
• What speaker delay values are anticipated (per-speaker or per-zone)? Does the BLU-100 have enough independent delay blocks?
• What room EQ target is planned (flat response, speech intelligibility voicing, or a blend)? Has a measurement session been planned?
• BLU-100 limiter configuration: absolute clip limiter, program limiter with release time, or both in series? What threshold?
• In M32R passthrough mode, does the signal bypass all BLU-100 DSP, or still pass through the output limiter and delay?
• What is the expected nominal output level from the DL16 when the M32R is feeding it? Is that compatible with BLU-100 input headroom?
• When AMX switches from base mode to M32R passthrough, is there a crossfade or mute during transition, or a hard switch? A hard switch could produce an audible transient.
• Can the BLU-100 limiter threshold for M32R passthrough be set independently of the base mode limiter?
• What AES50 cable type and max run length is specified for the umbilical? Has the planned distance been confirmed within spec?
• If the portable DL16’s AES50 passes through the M32R, does a rack DL16 fault also drop the portable DL16?
• Has the end-to-end gain structure been documented for both modes (mic capsule → receiver → split → BLU-100/DL16 → DSP → amp → speaker)?
• Pro-LITE 5.0 front panel attenuation controls: set-and-forget trim or operator-accessible? What happens to gain structure if an untrained person adjusts them?
• Is there a documented level agreement for M32R operators (e.g., M32R master at 0 dBVU = X dBu into BLU-100)?
• If AMX loses communication with a BLU-100, does it hold its last preset, fall back to a safe default, or go silent?
• Has cable dressing been planned to separate audio signal cables from power cables in the rack?

Wireless Microphones & Inputs

• With 4 wireless channels available (2x ACT-727a), what is the typical channel assignment for weddings (e.g., officiant + reader + musician + spare)? Is 4 sufficient, or could larger events need more?
• For youth events, what is the maximum simultaneous wireless channel count needed, and is it expected to grow?
• Are wireless instrument transmitters (guitar, bass) or IEM packs sharing the frequency pool with vocal mics?
• What antenna type is appropriate for the gym environment (omni paddle vs. directional log-periodic) given the metal ceiling structure? The ACT-727a uses 50Ω TNC connectors with DC bias for MIPRO antenna boosters.
• What is the worst-case distance from the rack closet to the farthest transmitter location? Does this exceed reliable range without remote antennas?
• Is remote antenna mounting (outside the rack closet, on a wall or ceiling) needed? Where, and what cable type/length? Note: If remote antennas are used, they must be electrically isolated from building ground (e.g., non-conductive mount or isolating bracket). The receivers are on UPS ground via the RLNK – if the antenna mount is bonded to building steel, the coax shield bridges the two ground references and creates a ground loop. See Electrical Plan – Grounding.
• Will the mic split be a labeled patch panel point for troubleshooting, or hidden in the back of the rack?
• How many simultaneous wired inputs are expected on stage at the largest event? Does the DL16’s 16-input count accommodate that?
• Are there instruments or sources requiring phantom power on the portable DL16?
• Is there a floor pocket or wall box for wired XLR drops (backup mics, DI boxes, podium mic), or do all wired sources go through the portable DL16?
• What does the M32R umbilical need to carry (network, AES50 for portable DL16, IEM returns, power)?
• How many stereo IEM mixes are expected, and do IEM transmitters need power and frequency coordination alongside vocal mics?
• What is the planned maximum umbilical length? Has it been verified against AES50 spec (100m for Cat 5e) including the daisy-chain to the portable DL16?
• Does the umbilical floor drop need to accommodate the M32R cart on either side of the room, or is a single fixed drop sufficient?
• What is the battery management plan for wireless mics (rechargeable vs. disposable, charger location)?
• For multi-hour events, who monitors receiver battery status and initiates swaps?
• If rechargeable, does the charge cycle fit back-to-back event scheduling (afternoon rehearsal → evening ceremony)?

Amplifiers & Speaker Wiring

• How many discrete speaker zones with independent level control are needed?
• Will all three amps be used simultaneously in all presets, or are the sub and monitor amps only active for certain event types?
• If the subwoofer and/or floor monitor outputs are removed (both TBD), what happens to the freed amp(s) — repurposed for additional speaker zones, kept as spares, or removed?
• Will the crossover for subwoofers be in the BLU-100 DSP or the amp’s “sub” input function? What crossover frequency and slope?
• What is the minimum speaker impedance the system will present? Confirm amps won’t go below 2Ω under any wiring configuration.
• At what impedance will the system most likely operate? This determines actual per-channel power and heat output.
• Has a room SPL calculation confirmed whether 15,000W of amplification (3x Pro-LITE 5.0) is appropriately sized, or significantly oversized?
• What is the expected speaker sensitivity (dB SPL/1W/1m)?
• If amps are oversized, is there a risk of front panel attenuation at very low levels reducing control resolution?
• What is the distance from the rack closet to the farthest speaker? Has wire gauge been calculated for run length and load impedance to maintain damping factor?
• Speaker wire type: in conduit, plenum-rated, or CL2/CL3? What does local code require for in-ceiling runs?
• Are speaker wires home-run (one per speaker back to rack) or daisy-chained within zones? Daisy-chaining changes the impedance the amp sees.
• Speakon pin assignments: consistent between amp output and speaker ends (NL4 1+/1- vs. 2+/2-)?
• Field-installed Speakon connectors at junction boxes near speakers – who terminates, what is the testing process?
• What is the BLU-100’s maximum analog output level (dBu) vs. the Pro-LITE 5.0’s input sensitivity for full power?
• Critical: do the Pro-LITE 5.0 through outputs carry pre-attenuation or post-attenuation signal? This determines whether amp #2’s input level is independent of amp #1’s attenuation setting.
• Is the BLU-100 limiter threshold set relative to the amp’s clip point or the speaker’s power handling?
• What is the power-on sequencing plan for amps vs. BLU-100s? Can RLNK enforce sequence for RLNK devices, and what about the amps on dedicated circuits?
• Is there AMX monitoring of amp fault conditions (DC fault, thermal protection), or will faults only be discovered when audio stops?

South Gym Video Display Plan

Goals

• Provide video display capability for presentations, lyrics, announcements, and event content

Current State

• Projector: Epson EB-730U ultra-short throw laser projector, ceiling-mounted at 205“ AFF
• Screens: Two motorized projection screens — (1) the primary Da-Lite Cosmopolitan Electrol 34468 (87“×139“, 164“ diagonal, 16:10, Matte White) at the projector location (bottom at 121.5“ AFF) with dry contact control (raise/lower), and (2) a second screen centered on the long wall (102’ side), Draper Lumalectric, model number unknown — will likely be removed
• Video path: AMX/SVSi encoder-decoder pair provides the video feed to the projector. The SVSi path has been tested and confirmed functional at 1080p – already in use for digital signage and live feed distribution around the facility

Resolution

The video system will run at 1080p for both the near-term projector setup and the long-term LED display(s).

Near-Term Plan

Integrate the existing projector and motorized screen into the AMX control system:

• AMX controls the SVSi video routing (already in place)
• AMX controls the motorized screen via dry contact relay (raise/lower). The screen uses limit switches and stops automatically at full raise/lower positions. Control is open-loop – AMX sends raise/lower and assumes it worked; there is no position feedback. No interlock between screen and projector is needed (AMX does not wait for the screen to fully lower before activating the projector). The relay module depends on the wiring approach: AMX REL8 (several available) if low-voltage wire is run to the screen, or Global Caché IP2CC-P PoE contact closure if Ethernet is run instead – the choice is tied to the relay wiring path (still an open question). Dry contacts carry only low-voltage signaling current, so any AMX relay handles the screen’s contact rating. On system-off, the screen raises immediately with no sequencing dependency on projector cool-down.
• Projector power on/off via AMX RS-232 through the SVSi decoder at the projector location. Raw serial commands are stored in the decoder and triggered by AMX via sendser (N1000/N2000 API reference) – no AMX driver module required. No separate control cable run to the rack is needed. There is no mechanism to detect a failed power-off command via sendser, so projector power-off acknowledgment is not handled.
• A “Presentation” AMX preset will combine a dimmed lighting scene with projector/screen activation. Exact dimming levels are TBD based on projector brightness vs. ambient light.

Why keep the projector for now? The projector and SVSi path are already installed and functional. Integrating them into AMX control requires no new hardware purchases – just programming. This provides a working video system immediately while the LED display decision is evaluated without time pressure.

SVSi Video Distribution

The SVSi system uses dedicated VLAN 25 on the M4250 switch with IGMP multicast for publish/subscribe stream routing. All local encoders and decoders are on the same switch. Video may occasionally be routed into or out of the room via this VLAN (e.g., auditorium overflow). End-to-end latency is 10 ms unscaled or approximately 17 ms with scaling at 60 fps (see equipment reference).

SVSi card models and locations:

• Cage cards (-C variants, in the AMX cage): 2x NMX-DEC-N1222A-C decoder (LED wall feeds to VX4S units), 2x NMX-ENC-N1122A-C encoder (rack PC and ClickShare), 1x AMX N4321 audio transceiver (audio-only streams from around the building)
• Standalone units: NMX-ENC-N1115-WP wall-plate encoder (back wall, PoE) and NMX-DEC-N1222A decoder (ceiling at projector, PoE – near-term only)
• Frame: 6-slot NMX-ACC-N9206 housing the cage cards, with 1 slot spare

EDID and stream switching: The default SVSi encoder EDID should negotiate 1080p with any modern source device. If issues arise, values from a 1080p EDID emulator can be copied to lock the encoder to a single resolution – verify during commissioning. When AMX switches the SVSi stream subscription on a decoder, the transition is a quick cut (similar to changing a TV channel). For Option B, each decoder receives a separate switching command from AMX with no timing dependency; a brief tear is possible during simultaneous switches but is not a concern.

Overflow feed: An auditorium overflow feed is available via the ross-01 encoder, already on the SVSi network (VLAN 25). This is a rare use case. Switching to or from the overflow feed behaves like any other SVSi stream subscription change – a brief glitch is possible but not a concern.

Loss-of-signal detection: Encoders use AMX HostPlay to display “no device connected to $ENCODER_NAME” when no source is detected (matching the existing facility pattern). Decoders display a similar message if their subscribed stream is not found on the network. VX4S input loss detection is not needed – any upstream issue will be caught by the encoder or decoder messages.

Long-Term Plan

Replace the projector and screen with LED display(s). Two options under consideration:

Option A: Single Large LED Wall

One larger LED wall as the primary display.

Pros:

• Single focal point – clean sight lines
• High brightness, visible in full gym lighting
• No ambient light concerns (unlike projector)
• No motorized screen to maintain

Cons:

• Higher cost for a single large display
• Fixed position – placement needs to work for all use cases
• If it fails, there’s no backup display

Option B: Two Smaller LED Panels

Two smaller LED panels, likely positioned to serve different areas or viewing angles.

Pros:

• Better coverage for a wide room – multiple sight lines
• Redundancy – one can fail without losing all video
• Potentially easier to mount depending on wall structure
• Could display different content simultaneously (e.g., lyrics + event info)

Cons:

• More complex video routing (need to feed two displays)
• Two sets of mounting hardware and cabling
• Content management is more involved if showing different sources

Two NovaStar VX4S video processors are available to be repurposed for the LED wall (see equipment reference). Each VX4S drives one display – using two to drive a single wall can cause sync issues between the processors. Each VX4S receives its feed from an SVSi decoder (HDMI output) directly to the VX4S (HDMI input). The decoder subscribes to any encoder on the SVSi network (VLAN 25) under AMX control.

• Option A (single wall): One VX4S + one SVSi decoder. Second VX4S is a spare.
• Option B (two panels): Both panels are identical in size and pixel pitch. One VX4S + one SVSi decoder per panel. AMX controls each decoder independently – same content (both subscribe to one encoder) or different content (each subscribes to a different encoder). If one panel fails mid-event, there is no automatic AMX fallback to reroute both feeds – the system simply operates with the remaining panel.

VX4S control: The VX4S accepts up to 1920x1200 @ 60Hz input (1080p60 confirmed). AMX controls the VX4S via TCP on port 5200 using a hex command protocol – a connection/handshake command is required before other commands are accepted. No AMX module exists; custom implementation is needed (straightforward hex-over-TCP). Protocol PDF available from NovaStar. The only parameter AMX needs to control is brightness (input selection is not needed since only the SVSi decoder is connected, and color/other parameters are not required). All VX4S settings persist across power cycles except brightness, which AMX should restore on every startup. The VX4S can generate test patterns independently of its input, but test patterns would more likely be generated in software (e.g., ProPresenter).

Environmental considerations: The gym environment poses a high ball-impact risk. LED panels must be specced for impact resistance, and a polycarbonate overlay may be needed depending on the manufacturer’s impact rating. Temperature and moisture are not concerns – the space is indoor and climate-controlled, and floor cleaning does not involve pressure washing or hosing.

Near-term staging and transition: The VX4S units stay in storage until an LED wall is installed – they are not racked during the projector phase. Conduit for the LED wall will be run during the initial renovation to avoid retrofitting later. When transitioning from the projector to the LED wall: run Ethernet from the VX4S units to the LED wall position (through the pre-run conduit), remove the ceiling-mounted SVSi decoder at the projector, install one or two SVSi decoder cards in the rack with HDMI out directly to the VX4S inputs, and let AMX routing handle the rest via SVSi stream subscriptions.

The LED display decision does not need to be made now. The near-term projector setup will serve while this is evaluated.

Digital Scoreboard

Once the LED wall is in place, it will also serve as a digital scoreboard for school gym use. This eliminates the need for a separate physical scoreboard and allows the display to switch between scoreboard, lyrics, presentations, and other content via AMX presets.

• What scoreboard software or system will generate the scoreboard graphics?
• What sports need to be supported (basketball, volleyball, badminton, etc.) and what scoring layouts are required?
• What device runs the scoreboard application – a dedicated media player, the ProPresenter machine, or a separate laptop?
• Does the scoreboard need to be operator-controlled from courtside (e.g., a tablet or wireless controller), or from a fixed location?

Equipment

Content Sources

Presenter Inputs

• Wired: AMX NMX-ENC-N1115-WP wall-plate encoder at the back of the room. Provides HDMI, VGA, and DVI-D/DP++ via passive adapter. This is the wired fallback – note that N1115-WP audio is known to be flaky, so use ClickShare or a separate audio path when audio quality matters. No additional floor boxes or other input locations are planned.
• Wireless: Barco ClickShare (CX-20 or similar). Supports Mac and Windows. HDMI output feeds a dedicated SVSi encoder card in the cage. The ClickShare base station needs a network drop and RLNK power.

Primary Content Tools

• ProPresenter is the default content tool, running on the rack PC (Mac mini). The operator needs a monitor for the rack PC – mechanism TBD. ProPresenter is always operator-managed independently; AMX presets do not trigger anything in ProPresenter.
• Arylic LP10 network streamer handles casual audio playback (warmups, youth events) via AirPlay 2, Google Cast, Spotify Connect, and Bluetooth. Line out feeds the BLU-100 as an audio input. No standalone video media player is needed – the rack PC handles video for larger events.
• The system is powered off when unattended; no content plays without an operator present.
• There are no plans for IMAG (live camera feed) at this time.

Audio Routing

Audio follows the video path automatically. The SVSi path carries HDMI audio alongside video – audio extraction happens at the decoder side, not the input side. The NMX-DEC-N1222A outputs 8-channel PCM via HDMI and stereo analog (balanced/unbalanced) on Phoenix connectors. The decoder extracts the embedded audio and feeds BLU-100 directly; no separate routing step or operator action is needed.

For Option B (two LED panels), both decoders need audio extraction capability so either feed can be sent to the audio system.

Source Selection and Routing

Only one simultaneous video source is active at a time. AMX presets default to the rack PC as the video source; manual source selection is always available on the touch panel.

External feeds: An auditorium overflow feed is available via ross-01 on the SVSi network (see SVSi Video Distribution). Streaming services (movie days, etc.) are handled by the rack PC with a browser. No cable, satellite, or other external feed is needed.

Resolution handling: Non-standard resolutions are not a concern. Wireless protocols (ClickShare, AirPlay, Miracast) negotiate 1080p. The wall-plate encoder EDID enforces 1080p on wired sources. If a non-standard resolution does get through, the SVSi encoder can scale it (adds approximately 7 ms).

Use-Case Workflows

• Weddings/funerals (family slideshows): Bring a laptop and connect via the N1115-WP wall plate or ClickShare, or bring content on USB and plug into the rack PC.
• School weekday use (teachers): Audio-only via LP10 (AirPlay, Bluetooth, Spotify Connect). Video+audio via ClickShare (native AirPlay/Miracast – supports laptops, iPads, Chromebooks without extra hardware). Wired fallback via N1115-WP wall plate.
• Youth events: Audio via LP10. No live camera feed (IMAG) planned.

Open Questions

Projector & Screen (Near-Term)

• What is the projector’s warm-up and cool-down time? Does it enforce a mandatory cool-down period before power can be cycled again? (Note: laser projectors typically have minimal warm-up and no cool-down requirement, but verify for the EB-730U.)
• Does the projector have an auto-wake feature that could conflict with AMX power sequencing?
• What is the measured throw distance from the projector lens to the screen, and does the current image fill the screen properly?
• Is there a horizontal offset between projector and screen requiring keystone correction?
• Sightline analysis: with the screen bottom at 121.5“ AFF, do audience members at the back of the room (844“ deep) have an unobstructed view?
• What is the anticipated lux level at the screen surface with the new lighting at full output? Is the projector bright enough for a legible image with house lights on?
• What is the relay wiring path from the rack to the screen motor controller? Two options under consideration: (1) PoE-based contact closure device mounted in the ceiling near the screen, controlled via Ethernet, or (2) low-voltage wire run from a relay in the rack up to the screen. Either way, conduit is needed.

LED Wall (Long-Term)

• What are the minimum and maximum viewing distances from each candidate mounting wall to the nearest and farthest spectators?
• What pixel pitch is required to avoid visible pixel structure at those distances, and does that pitch at the intended physical size produce a native 1080p resolution?
• What physical dimensions (width x height) are under consideration for Option A (single wall)?
• For Option B, what dimensions per panel? Does each individually reach 1080p or will the VX4S scale?
• Is there a minimum screen height requirement for sightline clearance above floor-level obstructions (bleachers, scoreboards, exit signage)?
• What is the wall construction at each candidate mounting location (masonry, steel stud, wood frame)? Has structural capacity been confirmed?
• What is the anticipated total weight of panels plus mounting structure? Does the building require a stamped structural analysis?
• Is there sufficient ceiling clearance above the panel for the mounting frame? Any conflicts with joists, HVAC, catwalks?
• How far is each candidate wall from the new electrical panel? What is the conduit routing path including fire-rated penetrations?
• What is the peak power draw per m² at max brightness, and does the total load fit on a single circuit or require multiple at the display location?
• Are LED panel power supplies internal to the panels or external rack-mounted?
• What signal protocol does the VX4S use to drive the panels (Ethernet, fiber, proprietary)? What is the max cable run length?
• What is the physical cable distance from the rack to each candidate wall? Does it exceed the VX4S transmission limit?
• How many data cables does the VX4S require for the intended panel array? Is there conduit capacity at the wall?
• Does the VX4S receive a single composited 1080p signal or multiple layers?
• What system generates the final 1080p frame (ProPresenter, media player, laptop)?
• For Option B: who decides whether panels show the same or different content? Per-event config on touch panel, or fixed mode?
• Is there a live camera feed requirement (IMAG, scoreboard camera)?
• Are the panels front-serviceable or rear-serviceable? If rear, what clearance is needed behind the array?
• What is the manufacturer’s recommended spare module inventory, and where will spares be stored?
• Does the manufacturer provide on-site warranty service? Expected response time?
• What is the ambient illuminance at the display wall with house lights on? Is panel brightness sufficient for acceptable contrast?
• What is the horizontal viewing angle, and does it serve spectators at extreme lateral positions?
• What is the expected exposure to dust, debris, or humidity from gym activities?

Content Sources & User Connectivity

• How will the operator view/control the rack PC? (Monitor in rack closet, KVM extender to a remote location, VNC/remote desktop, etc.)

South Gym Control Plan

Goals

• Provide a fully AMX-controlled multi-purpose room
• Keep day-to-day operation simple for volunteers via presets

Requirements

• Single, simple control interface for volunteers
• Presets for common scenarios (e.g., “School Gym,” “Wedding,” “Youth Night,” “Dinner Event,” “Presentation”)
• Power on/off sequencing to protect equipment

Considerations

• The control interface is an AMX MXD-1000-P 10.1“ Modero X wall-mount touch panel — the same model used successfully in previous installations. See equipment reference.
• AMX is the primary controller: AMX manages the BLU-100 processors directly – recalling presets, adjusting volume, and selecting inputs (see equipment reference). Day-to-day operation is handled through AMX presets on a touch panel (e.g., “School Gym,” “Wedding,” “Youth Night,” “Dinner Event”).
• M32R override: When the M32R is in use for a complex event, AMX switches the BLU-100 routing to pass through the M32R output to the amps (see audio plan for details). The M32R operator manages the mix; AMX handles the system-level routing.
• Presets are a starting point: After recalling a preset, operators can adjust individual parameters (volume, lighting level, etc.) from the touch panel. Adjustments are temporary and reset on the next preset recall. On the Paradigm side, individual zone levels can be overridden via PSAP after a preset recall.
• No time-based scheduling: There is no current requirement for scheduled preset transitions. The NX-4200 already uses NTP, so the capability exists if needed later.

Why use the existing facility AMX processor? The facility’s AMX NX-4200 (FG2106-04) can control the South Gym over the network via the fiber uplink, avoiding a dedicated processor purchase and keeping all AMX programming centralized. The NX-4200 has a 1600 MIPS processor, 1 GB RAM, and 8 GB storage – designed for large campus-scale installations with dozens of rooms. The South Gym’s ~8 IP devices is a trivial load relative to its capacity. Its LAN port connects to the facility network, giving it IP access to all South Gym devices (BLU-100s, SVSi, RLNK, VX4S, N4321) through the M4250 switch. See equipment reference for full specs.

Serial device limitation: The NX-4200’s 8 physical serial ports are in the IT room, not the South Gym. The ETC Paradigm ACP requires RS-232, so an AMX EXB-COM2 (FG2100-22) ICSLan serial expansion module will be placed in the South Gym rack on VLAN 21. The NX-4200 reaches it over the network — this is a proven approach used in other facility installations. The serial link runs at 9600 baud, 8N1, no handshake. The Paradigm uses the Paradigm Station Access Protocol (PSAP) – CR-terminated ASCII commands for preset recall, zone override, and status queries. Unlike the DFD 2322DMX, the Paradigm does not have a built-in heartbeat; AMX must implement a poll-based watchdog (periodic PSAP status queries) to detect a dead serial link. A single RS-232 connection on EXB-COM2 port 1 controls both the gymnasium layer (sACN to Response 0-10V Gateway) and event layer (DMX512 to SmartPacks). See equipment reference.

AMX Responsibilities

Device-specific integration notes:

• ClickShare: AMX does not directly control the ClickShare unit. It constantly outputs to its SVSi encoder when powered on. AMX’s role is limited to RLNK power sequencing and SVSi routing — the user selects ClickShare as a video source from the touch panel to route it to the projector or LED wall.
• LP10 (AirPlay/Bluetooth receiver): AMX does not directly control the LP10. It is user-operated (AirPlay/Bluetooth). AMX’s role is limited to RLNK power and BLU-100 input routing — the user selects the LP10 as an audio source from the touch panel to unmute it on the BLU-100.
• Audio source selection: AMX allows the operator to select which audio source(s) are active from the touch panel. Multiple sources can be mixed simultaneously (e.g., wireless mics + LP10), but AMX enforces sensible restrictions (e.g., wireless mics and M32R cannot be active at the same time, since the M32R has its own mic inputs).

Device Status Monitoring

AMX polls key devices and displays their status on the touch panel. This gives operators visibility into system health without needing to check individual devices.

• SVSi encoders: Source connected / no source (complements the HostPlay on-screen message)
• SVSi decoders: Stream subscription active / stream not found on network
• VX4S (long-term): Online / offline, brightness level
• ETC Paradigm ACP: Poll-based watchdog via periodic PSAP status queries (the Paradigm does not have a built-in heartbeat like the DFD 2322DMX). AMX sends a status query at a regular interval and flags a fault if no response is received within the timeout window.
• RLNK: Not monitored — the RLNK units in use don’t support overcurrent protection or external status polling.

This is a programming task – no additional hardware required. The SVSi API already supports status queries, and the VX4S responds to TCP polling on port 5200. Back-end device health monitoring is handled by existing facility infrastructure: Prometheus via SNMP for switch statistics and Uptime Kuma for device ping monitoring. AMX touch panel monitoring is limited to operator-facing status (SVSi and VX4S).

Error handling: The current facility behavior for command failures is silent failure. Improved error handling (retry logic, touch panel alerts) would be desirable but is limited by the NX controller’s programming capabilities. AMX’s newer Muse controller platform would simplify this, but it is not in scope for this project.

Failure & Fallback

The AMX processor and fiber uplink are a known single point of failure. If either fails, the touch panel becomes non-functional and devices hold their last state. A Raspberry Pi in the South Gym rack running Bitfocus Companion provides a fallback web UI capable of controlling all room gear independently of AMX. WiFi would be down if the fiber link fails, but a laptop can be plugged directly into the local M4250 switch to access Companion.

Component failure impact:

• BLU-100 #2 failure: Complex event mode (M32R) is completely inoperable — the DL16 loses all source feeds and the M32R return has no path into the system. Base mode still works — #1 has all sources on its own analog inputs and feeds the amps directly.
• BLU-100 #1 failure: Base mode is lost (all amp outputs are on #1). The M32R can still drive the room via emergency re-cabling: re-cable DL16 outputs directly to amp inputs, re-patch MIPRO receivers directly to DL16 inputs. This bypasses BLU-100 limiter protection and system EQ. See audio plan — failure impact for the full procedure.
• BLU-100 communication loss: The BLU-100 holds its last received settings.
• M4250 switch failure: Audio continues to work (BLU-100 holds last settings, analog paths unaffected), but SVSi-routed audio/video is lost. RLNK units retain their last state but can’t be further controlled. The touch panel loses power (PoE). The Paradigm ACP holds both its last sACN and DMX output; the Response 0-10V Gateway also holds its last received sACN values (both lighting layers hold state). Button stations continue working independently of the network. Event presets are available from a button station if configured.
• Paradigm ACP (lighting): Stores presets in non-volatile memory. Gymnasium layer: button stations outside the rack closet work independently of AMX and the network. Event layer: presets can be recalled from button stations if event presets are assigned to a station.

Future: Auditorium Feed Routing

The infrastructure supports routing audio and video from the Auditorium to the South Gym via AMX/SVSi if overflow capability is needed in the future. This is not a near-term requirement.

Open Questions

Preset Design

Deferred until the equipment list and usage needs are finalized.

• Can a complete preset-by-subsystem matrix be defined? For each named preset (“School Gym,” “Wedding,” “Youth Night,” “Dinner Event,” “Presentation,” “Cleanup,” “Off”), what is the expected state of: audio (BLU-100 routing, volume, input), video (source, projector power, screen position), lighting (DMX scene), and power (which RLNK outlets are on)? Currently no single document maps a preset name to its complete multi-subsystem behavior. The preset names in control.md (5 names) do not match lighting.md (6 names – adds “Cleanup” and “Off,” omits “Presentation”).
• How many presets will be stored in the BLU-100s, and what parameters does each preset control (input routing matrix, EQ, levels, limiter thresholds, zone assignments)? Are presets recalled as monolithic snapshots, or can individual parameters be adjusted independently (e.g., volume up/down within a preset)? Either zero or two — possibly one for standalone operation and one for M32R integration, or a single fixed setup with no presets at all. TBD.

Power Sequencing

• What is the exact power-on and power-off sequence for the 9 RLNK outlets, and what are the inter-step delays? rack.md documents the outlet allocation but has no sequencing column.
• Since the amps are on dedicated circuits (not RLNK), how are they powered on and off? Are they left permanently energized? If so, is that acceptable from a power and equipment longevity perspective? If they need to be switched, what mechanism is used (manual breaker, a second RLNK or relay, a smart outlet)? Currently control.md does not mention the amps and rack.md has no mechanism to control their power.
• What does “system off” mean operationally? (a) All RLNK outlets off, amps left on dedicated circuits, lights off via DMX, projector off, screen raised? (b) Everything fully de-energized including amps (requiring someone to throw breakers)? (c) A “standby” state where infrastructure stays powered and only output devices are off?
• Does the rack PC (Mac mini) need a graceful shutdown signal before RLNK power is removed? If so, does AMX send a network shutdown command (e.g., SSH) before killing power on outlet 7? (rack.md flags this as an open question.)

Subsystem Sequencing & Coordination

Deferred until the equipment list and usage needs are finalized.

• When a user taps a preset on the touch panel, in what order does AMX issue commands to subsystems? For example: (1) lighting fades to scene, (2) audio switches to preset, (3) projector powers on, (4) screen lowers. Are there timing dependencies (e.g., lighting must reach dimmed state before projector image is visible)? (lighting.md explicitly flags this as unanswered.)
• When AMX switches the BLU-100 routing from base mode to M32R passthrough, what is the exact BLU-100 command or preset recall? Is there a confirmation/feedback mechanism so AMX knows the switch completed successfully? What is displayed on the touch panel during and after the switch?
• Can the system transition from M32R mode back to base mode (or vice versa) during an event without an audible interruption? audio.md asks whether there is a crossfade or mute during MUX transitions – what is the defined behavior?
• How does AMX know the M32R is connected and ready? Is there a network presence check (M32R IP appears on the VLAN), a manual “M32R Mode” button on the touch panel, or automatic detection? What happens if an operator enables M32R mode but the M32R is not physically connected?
• When the “Presentation” preset is recalled, what is the default video source (rack PC, ClickShare, or wall plate encoder)? video.md states “Presets default to the rack PC.” But for presentations, a guest may expect ClickShare. Does the system support split audio/video sourcing (e.g., AirPlay audio via LP10 + ClickShare video)?

Video & Projector Control

• The VX4S defaults are documented as “all settings persist except brightness, which AMX should restore on every startup” (video.md). What is the target brightness value? Does it vary by preset? To be decided after LED wall installation. The VX4S can store a default power-on brightness persistently, so AMX restoration may not be needed.
• What are the exact RS-232 command strings for projector power on, power off, and status query (stored in the SVSi decoder via sendser)? The projector make/model is unknown (video.md open question), so the serial protocol is also unknown. The programmer is blocked until this is resolved.
• What is the physical relay device for the motorized screen dry contact? video.md lists two options (AMX REL8 via low-voltage wire, or Global Cache IP2CC-P via PoE Ethernet) but the decision is not made. Neither option appears in the networking port table, rack layout, or electrical plan. TBD — trade-offs to both approaches.

Touch Panel & User Experience

Deferred until the equipment list and usage needs are finalized.

• Where will the touch panel(s) be mounted? Near the main entrance? Near the stage/front area? Near the rack closet? Multiple locations?
• What pages/screens will the touch panel display? A minimum: (a) home page with preset buttons, (b) volume adjustment, (c) source selection, (d) status/diagnostics. Is that sufficient, or do stakeholders need more granular control (individual zone levels, individual lighting zones, per-device power)?
• What volume control is exposed on the touch panel? Single master volume for the entire room, per-zone volume, or per-source volume? What are the minimum and maximum bounds?
• Can a step-by-step operator workflow be documented for each event type? (e.g., Wedding: arrive 2 hours early, tap “Wedding,” connect M32R via umbilical, tap “M32R Mode,” sound check, etc.) The control plan defines what the system can do but not how operators use it.
• Is there a requirement for printed or laminated quick-reference guides near the touch panel? Who is responsible for ongoing volunteer training as volunteers rotate?

Device Status Monitoring

• For SVSi status, how is it displayed on the touch panel? Simple green/red indicator, or device name + specific error? What is the polling interval? What happens if polling itself fails? Deferred until touch panel UI design.

Failure & Fallback

• Should a button station near the gymnasium entrance include event layer preset buttons (e.g., “Wedding,” “Dinner Event”) for non-technical fallback when AMX is unavailable?

Scheduling & Automation

• Is there a requirement for auto-off after inactivity (occupancy sensing)? Almost certainly not, but to be confirmed.

Commissioning & Maintenance

Deferred until the equipment list and usage needs are finalized.

• Is there a defined commissioning protocol for the control system? What constitutes “working” for each preset? Who signs off on acceptance? (e.g., “recall Wedding preset, verify lighting dims to target level within 5 seconds, verify audio preset is active, verify projector is on and screen is down.”)
• Can the AMX programmer access the system remotely for diagnostics and updates? Is there VPN or remote access to the AMX processor, BLU-100s, or M4250? If so, is this documented and secured?
• Who is responsible for firmware updates on each networked device (BLU-100, SVSi, M4250, RLNK, VX4S, ClickShare, LP10, Mac mini)? Is there a maintenance window policy?
• Is there a manual workaround for routing the auditorium overflow feed without AMX involvement (e.g., manually subscribing the SVSi decoder to ross-01 via the SVSi web interface), given that the infrastructure is being installed now but overflow programming is deferred?

South Gym Networking Plan

Requirements

• Local network switch for AV control devices
• Network connectivity back to the facility’s core switch for AMX control and audio/video feed routing
• VLAN structure compatible with the existing facility network

Uplink

The South Gym connects to the facility network via a fiber run from the IT room. This provides the uplink for AMX control, SVSi video routing, and VLAN trunking.

Topology: Core Switch (Netgear GSM4248PX) > IT Room Switch (Netgear GSM4230PX) > South Gym Switch (Netgear GSM4248PX). The IT room switch has free SFP ports for the fiber uplink. The trunk carries tagged traffic only (no native VLAN).

LC duplex termination throughout.

The fiber path has three segments:

Segments 1–2 use armored fiber for all exposed runs. Segment 3 uses non-armored fiber – a deliberate choice because armored cable is difficult to position and terminate in a rack. Both cable types are Corning OS2/SMF-28 singlemode and are splice-compatible, though the cable is pre-terminated on spools so no field splicing is needed.

SFP+ transceivers: 10G SFP+ trunks, matching the rest of the building. Third-party/generic SFP+ modules are used, same as existing facility trunks. Specific model TBD during commissioning.

Strand allocation

Junction box (12 strands in, 6 continue):

• 6 strands continue to the AV rack (segment 2)
• 6 strands spare for future use
• Junction box is accessible by removing a drop ceiling tile

AV rack (6 strands):

• 2 strands: AV switch (Netgear M4250)
• 2 strands: IT switch
• 2 strands spare for future use

Fiber is pre-labeled at the factory. As-built documentation showing strand-to-termination mapping will be created after installation.

Post-install fiber validation

No OTDR is available, and none is needed for pre-terminated cable on a short run. Post-install validation steps: (1) confirm 10G link negotiation on both ends, (2) read SFP+ DDM/DOM optical RX power from the M4250 management interface and record as baseline, (3) run iperf3 to verify sustained throughput, (4) monitor switch error counters (CRC, frame errors) over the first few days. Cable attenuation ratings will come from the manufacturer.

Fiber uplink failure analysis

The fiber uplink is a single point of failure for AMX control, SVSi video routing, LP10 network streaming, ClickShare discovery, and rack PC internet access. Per-device behavior if the uplink is lost:

Fallback: A Raspberry Pi running Bitfocus Companion in the South Gym rack provides local control; access via a laptop plugged into the local M4250. Analog audio paths continue working independently of the uplink. See control.md Failure & Fallback section for full details.

Switch

Netgear M4250 PoE+ GSM4248PX (48-port) as the local managed switch. The M4250 supports the facility’s VLAN scheme and has SFP+ slots for the fiber uplink to the IT room.

Why M4250 PoE+ (not PoE++)? PoE+ (802.3at, 30W/port) provides sufficient power for AMX touch panels and SVSi endpoints. PoE++ (802.3bt, 60-90W/port) would add cost for capacity we don’t need – none of the planned PoE devices require more than 30W. Why Netgear M4250? The M4250 is the facility standard – it’s already deployed in the auditorium, atrium, and for digital signage. Using it in the South Gym maintains consistency across the facility for management, sparing, and troubleshooting. It’s a managed switch designed for AV applications, with IGMP snooping, QoS, and VLAN support out of the box.

Engage Controller: All facility M4250s are managed via Netgear Engage Controller, which pushes consistent VLAN, QoS, IGMP snooping, and unregistered multicast filtering settings across every switch automatically. The South Gym M4250 will receive the same configuration as the rest of the facility.

Monitoring: Addressed in control.md – Prometheus via SNMP for switch stats, Uptime Kuma for device pings. Same facility monitoring stack as all other switches.

Firmware updates: SVSi endpoints and RLNKs are updated during commissioning; hardware is mostly discontinued so future updates are unlikely. M4250s are updated periodically via Engage Controller. BLU-100s have not been updated and will only be updated if a compelling reason arises. No formal maintenance window policy.

Security configuration: Same as the rest of the facility M4250s – SSH enabled, admin user with SHA512-encrypted password, SNMP with SHA512 auth and read-only community string restricted by source IP, HTTP/HTTPS on non-default ports (49151/49152). Engage Controller pushes consistent config. See existing switch configs in this repo under Networking/. Unused switch ports (e.g., long-term VX4S ports on VLAN 21) are not administratively shut down – physical access to the rack closet is restricted, so unused port shutdown is not necessary.

IGMP and multicast: The M4250 does not act as an IGMP querier on VLAN 25 – it delegates to the core switch, using the existing facility IGMP settings. Multicast containment (pruning) is managed at the core switch. This is the same architecture used across the rest of the building. With properly configured IGMP snooping, unsubscribed SVSi streams are pruned and do not consume switch bandwidth.

SVSi compatibility: SVSi stream delivery over M4250 switches has been tested and works fine across the rest of the building. The N4321 audio transceiver uses the same IGMP multicast mechanism as SVSi video – it is not AES67 and has no PTP requirements.

Switch port count

~19 copper ports + 1 SFP+ uplink at full build-out. Near-term (before LED wall): ~14 ports. A GSM4248PX (48-port) provides comfortable headroom for future expansion.

Not on M4250: Midas DL16 (rack and portable) are AES50 only – no Ethernet. IT switch has its own fiber uplink. School AP is on a separate network.

Wireless device notes:

• Arylic LP10: WiFi disabled; wired-only on VLAN 5 (SPACnet) to prevent bridging two networks or creating a rogue AP.

• Barco ClickShare: Uses facility WiFi, not its own AP. WiFi band/channel coordination is IT’s responsibility.

• Midas M32R: Ethernet is used for the remote control app. On VLAN 21 (Control), accessible via IT WiFi which broadcasts into the gym space.

• VLAN assignment for Rack PC and ClickShare – both may need to be on SPACnet (VLAN 5) for user device discovery, or split across VLANs with appropriate routing

• Final AMX touch panel count

PoE consumers

This list will be updated as equipment is added. The M4250 PoE+ models provide up to 30W per port (IEEE 802.3at). Total switch PoE budget depends on the model selected.

VLANs

The facility uses a standard VLAN scheme across all AV switches. The M4250 in the South Gym will trunk these VLANs over the fiber uplink. Not all facility VLANs are needed in the gymnasium.

South Gym active VLANs: 1, 5, 21, 22, 25. The trunk port to the core switch should carry at least these five. VLAN 22 (Lighting) is used by the Paradigm ACP and Response 0-10V Gateway for sACN (switch ports 16-17). Other VLANs can be pruned at the trunk or simply left unconfigured on local ports.

Inter-VLAN routing is handled on the IT room switch (not on the M4250). VLAN 21 (Control) can access VLANs 5 (SPACnet) and 25 (SVSi). No ACLs or firewall rules are in place. Trunk latency has not been observed as an issue. This means the remote AMX processor (NX-4200) reaches all South Gym devices on VLAN 21 through the trunk – including the RLNK-915R for power sequencing and the AMX EXB-COM2 for RS-232 control of the ETC Paradigm ACP (both lighting layers). If the fiber uplink is down, the Raspberry Pi running Bitfocus Companion in the South Gym rack provides local control as a fallback.

BSS BLU-100 control protocol: HiQnet uses IANA port 3804 (TCP for reliable control, UDP for discovery datagrams). Discovery uses IP broadcast, not multicast – DiscoInfo messages are network-broadcast, so IGMP snooping on VLAN 21 does not need any special configuration for HiQnet. This is distinct from VLAN 25 (SVSi), which does use IGMP multicast. See HiQnet Third Party Programmer’s Guide sections 4.5.1–4.5.2 and 4.1.6.

AMX RS-232 bridge: The remote AMX NX-4200 processor sends RS-232 commands to the ETC Paradigm ACP (PSAP protocol, controls both gymnasium and event lighting layers) via an AMX EXB-COM2 ICSLan serial expansion module (FG2100-22) in the South Gym rack, on VLAN 21 (Control).

IT Network

The IT team runs on separate hardware from the AV network. Our responsibilities:

• Pull the fiber and all cabling (we handle all fiber-related work)
• Install their switch in our rack (we provide the rack space and physical install)
• Pull cable for their wireless access point (Cat 6A, matching all other new data runs)

IT’s responsibilities:

• Configure their switch
• Install and configure their AP on the junction box we provide

School Network

The school has an existing AP in the room with an existing cable drop. We need to provide:

• Conduit run to the new AP mounting location
• Junction box for AP mounting
• Attempt to preserve the existing cable and extend it to the new box (depends on available slack) – the rest of the building uses Cat 5e, so the existing school AP cable is likely 5e (adequate for PoE at these distances)
• TBD: Coordinate with the school division on AP cabling requirements

AV Rack

See Rack Plan for rack layout, power budget, and location details.

Patch panels

4U allocation in the rack (cross-reference: rack.md U1–4):

• U1: Fiber patch panel (1U)
• U2–3: Neat patch (2U) – clean cable management between patch panels and switches
• U4: Copper patch panel (1U, 24-port Cat 6A)

Specific panel models TBD.

Network Drops

Cat 6A drops required within the South Gym. This list will be updated as equipment is added or removed.

In-rack devices share a short patch to the M4250 and don’t need dedicated cable runs.

• TBD: Wall plate locations and quantities
• TBD: Additional drops as equipment list is finalized

Considerations

• Run sufficient Category 6A cabling within the South Gym – even if not all ports are used initially, pulling cable during renovation is far cheaper than retrofitting later
• LED wall data cabling (long-term): Cat 6A – overkill for the VX4S panel protocol but matches everything else in the build and is guaranteed to work. Cable count TBD once LED wall configuration is finalized.

Commissioning Documentation

The following tables will be completed during commissioning and serve as the as-built network documentation.

IP Address Assignments

Switch Port Map

• Patch panel port assignments to be completed during commissioning
• Actual switch port numbers may change — this is a logical mapping

Patch Cable Labeling

• TBD: Labeling standard (Brady, P-touch, heat-shrink) and naming convention. (Cross-reference: rack.md cable labeling question.)

Configuration Backup

• Export M4250 startup-config after commissioning and store in this repo under Networking/South Gym Switch/

Open Questions

VLAN Design & Switch Configuration

• What STP mode is in use facility-wide (STP, RSTP, MSTP)? Should edge ports (SVSi endpoints, BLU-100, touch panels) be configured as edge/portfast to avoid 30-second STP delays on link-up? Is BPDU guard or root guard needed on any ports? Using M4250 defaults. Worth future consideration but hasn’t historically been a problem.

Device Discovery Protocols

• Multiple devices rely on mDNS/Bonjour and SSDP for user device discovery. These protocols do not cross VLAN boundaries without a helper/proxy (e.g., Avahi reflector, mDNS gateway). The existing facility switches have no bonjour enable. How will the LP10 (VLAN 5, AirPlay 2/Google Cast/Spotify Connect) and ClickShare (VLAN TBD, AirPlay/Miracast) become discoverable to user devices on IT WiFi (likely a different VLAN)? A dedicated “South Gym AV” WiFi network on the same VLAN as these devices would provide native mDNS/Bonjour/SSDP discovery without cross-VLAN helpers. Details TBD — VLAN assignment, AP hardware, SSID/security, and whether this is an additional AP or a repurpose of an existing one.
• If the ClickShare is on a different VLAN than user devices, will native AirPlay/Miracast (which relies on mDNS/Bonjour) fail? The video plan explicitly lists ClickShare as the wireless presentation path for teachers, presenters, and wedding families – this is a core use case. Addressed by the “South Gym AV” WiFi network — if ClickShare and user devices are on the same VLAN, AirPlay/Miracast discovery works natively.

Physical Layer & Cabling

• What are the Cat 6A run distances from the rack to: the back-wall N1115-WP wall-plate encoder, the ceiling-mounted NMX-DEC-N1222A decoder, the M32R floor drop(s), and AMX touch panel location(s)? Are all runs within the 100-meter Cat 6A maximum? PoE performance degrades over distance. (Cross-reference: electrical.md conduit path questions.) All runs expected to be well under 100m, but exact distances need to be measured on-site.

SVSi / AV-over-IP

• What is the typical bandwidth of an MPC-compressed 1080p60 stream (typically 200-400 Mbps)? How many simultaneous SVSi streams could be active at once (2 encoders local + 1 overflow from auditorium, 2 decoders subscribing)? Does the 1 Gbps fiber uplink have sufficient headroom for worst-case multicast load plus control traffic plus rack PC internet traffic? Bandwidth is likely higher than the 200-400 Mbps estimate — need to verify from encoder specs. The fiber uplink is 10G SFP+, so headroom should be substantial.

Wireless & IoT

• The LP10 has Bluetooth 5.2 with a 15m range rating. In a gymnasium with metal ceiling structure, what is the realistic Bluetooth range from the rack closet to a user in the gym? Is the rack closet door solid or does it attenuate Bluetooth? If range is insufficient, the Bluetooth fallback does not actually work. Range may be poor through the closet door/walls — needs real-world testing after install. WiFi-based playback (AirPlay 2, Google Cast, Spotify Connect) is likely the more reliable path. Bluetooth is a nice-to-have, not a guaranteed fallback.

M32R Floor Drop

• Is the M32R floor drop a single Cat 6A jack, or does it need multiple jacks (one for Ethernet, one for AES50 if carried over structured cabling)? AES50 uses a proprietary protocol that is not standard Ethernet – if AES50 is expected to traverse a patch panel and switch, it will not work because AES50 is not routable.
• Does the floor drop location need to support the M32R cart on either side of the room, or is a single fixed drop sufficient? If two locations, are two floor drops needed? (audio.md raises this question.)
• Is the floor drop a flush floor box, and does it need to be rated for gymnasium floor traffic (rolling carts, ball impacts)?

LED Wall Data Cabling (Long-Term)

• Should cables be pulled into the LED wall conduit now (risk of damage during construction), or should conduit be left empty for future pull? What is the maximum distance from the rack to each candidate LED wall location (standard 100m limit applies)? Deferred — to be determined with the LED wall manufacturer.

Network Monitoring & Operations

• The M4250 PoE model selection (24 vs. 48 port) depends on the total PoE budget. Known PoE consumers total ~33W (decoder + encoder), plus TBD touch panel(s) at 12-25W each. Has the selected model’s PoE budget been verified as sufficient with headroom for future PoE devices? Equipment list is nearly finalized. PoE budget is overkill — the GSM4248PX provides 960W against an estimated total PoE draw well under 100W. Verify once final device list is locked.

South Gym Lighting Plan

Current State

• Fixtures: 114 fluorescent fixtures (2x T8 tubes each, 228 tubes total) in 8 rows running front-to-back along the 70’ depth. Layout: 3 rows of 16, 2 rows of 8 (center-aligned, shortened by the projection screen and an old second-floor control room that will be removed during renovation), 3 rows of 16, plus 2 fixtures mounted to the underside of the control room jut-out (switched with the center short rows). No dimming capability, fixed color temperature. Lamps are a mix of Philips F32T8/TL941 (4100K, CRI 90+), Sylvania Octron Vivid Value 32W 4100K (CRI unknown – see TODO below), and Philips F32T8/TL850 (5000K, CRI 80+). All 32W T8. Aging electronic ballasts; tubes are being phased out by regulation (Canada banned manufacture and import of most fluorescent tubes in December 2023 under the Canadian Energy Efficiency Regulations) and remaining stock is finite.
• Pot lights: 10 recessed pot lights in the ceiling — 4 on the south side, 6 on the north. Lamps are Sylvania LED15PAR38DIM830FL40 (LED PAR38, 15W, dimmable, 3000K, CRI 80+, 40° flood). Fixture model TBD. On a separate circuit from the fluorescent groups, controlled by wall-mounted slider dimmers (potentiometers). Already LED and dimmable — potential candidates for the event layer. Power source unknown — no breaker found at the local panel; may be fed from a different panel elsewhere in the building.
• Dimming: Two ETC SmartPack 12x1200W wall-mount dimmer packs are available (24 channels total, 1200W per channel). One is currently installed in the South Gym; the second is available but not yet installed. The existing installed SmartPack’s power source is unknown — no breaker found at the local panel.

Requirements

• General illumination sufficient for sports and active use (gymnasium layer)
• Dimmable lighting for worship, presentations, and events (event layer)
• Physical wall switches for daily gymnasium operation – simple, familiar, no dependency on AMX or network
• Zoned control – ability to light different areas independently (e.g., stage area vs. full gym)
• Reliability – low maintenance, long lifespan
• Energy efficiency – reduced operating costs vs. current fluorescent fixtures

Architecture

The lighting system is split into two independent layers, each optimized for its use case:

Both layers are controlled by a single ETC Paradigm ACP. The Paradigm outputs sACN to an ETC Response 0-10V Gateway for gymnasium fixtures, and DMX512 directly to SmartPacks for event lighting. Both layers are managed through a single RS-232 link from AMX using the Paradigm Station Access Protocol (PSAP). Despite sharing a controller, the two layers have independent output paths – different fixtures, different dimming technologies, different physical outputs. However, both layers depend on the Paradigm ACP hardware; if the Paradigm fails, both layers lose control (see failure analysis in control.md). The gymnasium layer can also operate fully independently via physical button stations, though the button stations are inputs to the Paradigm, not a bypass around it.

Control Authority – Gymnasium Layer

The Paradigm button stations are the primary authority for the gymnasium layer. AMX is a secondary input:

• Button station ON – fixtures are on. AMX cannot override this.
• Button station priority released – AMX can control the gymnasium fixtures via Paradigm serial commands (turn on, adjust dimming). Note: the behavior of the “Off” button must be defined in LightDesigner – it could be configured as a 0% assertion (button station priority still active, still blocking AMX) or as a priority release (freeing AMX to take over). The intended behavior is a priority release.

This gives school staff simple physical control for daily use, while AMX retains the ability to incorporate the gymnasium fixtures into coordinated event presets when the button stations are not in use.

The Paradigm ACP manages the arbitration between button station inputs and serial commands using its built-in priority system. Button station inputs are assigned higher priority than the serial input.

Control Authority – Event Layer

The event layer is AMX-only. There are no physical switches. AMX sends RS-232 commands to the Paradigm ACP via PSAP, which outputs DMX512 to the SmartPacks. The Paradigm’s local presets provide a fallback if AMX is unavailable – presets can be recalled from button stations (if event presets are assigned to a station) or from the Paradigm’s front panel in the rack closet.

Gymnasium Layer – ETC Paradigm ACP

Why Paradigm?

The facility already uses ETC Paradigm architectural controllers for house lighting elsewhere in the building (see Lighting/2018 Handover for the existing installation). The Paradigm ACP provides:

• 0-10V dimming – the Paradigm outputs sACN over Ethernet to an ETC Response 0-10V Gateway (RSN-LV-R3), which provides 24 channels of 0-10V sink control for gymnasium fixtures
• Button station inputs – ETC Unison Heritage button stations (or similar) provide simple physical wall switches
• RS-232 serial port – a single RS-232 link from AMX (via EXB-COM2 port 1, PSAP protocol) controls all lighting – both gymnasium and event layers
• Built-in preset storage – the Paradigm stores its own presets, so button stations work independently of AMX
• Institutional familiarity – staff and volunteers already know the Paradigm button stations from the rest of the facility

Fixtures

Design Targets

• Target illuminance: 70 fc average on the floor (exceeds IES recreational minimum of 30-50fc for Class IV recreational / Class III interscholastic play; provides headroom and allows dimming down for cleanup/setup use). Note: IES RP-6 may have been superseded – verify the applicable edition or successor standard.
• Dimming rationale: 0-10V dimming is primarily for reducing output during cleanup, setup, and casual use where full sports-level illumination is unnecessary. This does not substantially affect fixture cost since most high-output LED gymnasium fixtures include 0-10V drivers as standard.
• Mounting height: ~20’ trim (open exposed ceiling, no drop ceiling)
• Lumen maintenance: Design should apply a light loss factor (LLF) of ~0.85-0.90 so that maintained lumens still meet the 70fc target at end of useful life. This means the initial design targets ~78-82fc.
• Adaptability: The 0-10V dimming also provides insurance – if 70fc proves to be more than needed after installation (or after future surface changes increase reflectance), the system can be dialed back without replacing fixtures.

Specifications (TBD)

• High-output LED suitable for sports illumination
• 0-10V dimmable (compatible with Paradigm ACP output)
• Impact-rated for gymnasium environments (IK08 minimum, IK10 preferred – balls will hit fixtures)
• Controlled glare / low UGR for overhead sports (volleyball, basketball involve looking upward)
• CRI 80+ minimum (CRI 90+ if games may be video recorded/streamed)
• CCT TBD – sports/gymnasium use typically 4000K-5000K (single fixed CCT likely sufficient since atmospheric lighting is handled by the event layer)
• Efficacy 140+ lm/W preferred (energy code compliance and reduced operating costs). Note: CRI 90+ and 140+ lm/W are difficult to achieve simultaneously – CRI 90+ fixtures typically deliver 110-130 lm/W. If CRI 90+ is required, relax the efficacy target to 120+ lm/W.
• Mounting: pendant-hung or chain-mounted from exposed structure at ~20’

Preliminary Photometric Estimate (Zonal Cavity Method)

A rough zonal cavity calculation provides planning-level fixture counts and power estimates. These numbers are useful for electrical circuit sizing and budgeting before a fixture is selected. A proper photometric layout using DIALux evo (free) with real fixture IES files is still needed for the final design – the zonal cavity method cannot verify uniformity, glare, or point-by-point illuminance. DIALux can import DWG floor plans directly and produce point-by-point illuminance grids, uniformity ratios, and UGR glare ratings.

Room dimensions: 102’4“ x 70’4“ (~7,200 ft²).

Inputs:

Room Cavity Ratio (RCR): 5 x 20 x (102.3 + 70.3) / (102.3 x 70.3) = 2.40 (moderate)

Estimated Coefficient of Utilization (CU): ~0.58 for a typical wide-distribution LED high bay at this RCR with these dark surfaces. This is the weakest assumption – actual CU depends on the specific fixture’s photometric distribution and could range from 0.50 to 0.60, swinging the fixture count by ~15%. With these low reflectances (especially walls at 25% and floor at 12%), a midpoint of 0.54-0.56 may be more realistic; 0.58 is at the optimistic end of the plausible range. The lower RCR (vs. a smaller room) slightly favors CU, but the effect is within the uncertainty range.

Fixture count estimates:

N = (70 fc x 7,200 ft²) / (Lumens per fixture x 0.58 x 0.87)

Total wattage is approximately ~7,200W (~1.0 W/ft²) regardless of fixture size (this is algebraic, not coincidental – fixture lumens cancel when efficacy is constant). This is near the NECB prescriptive LPD limit for gymnasiums (~10.5 W/m², ~0.98 W/ft²) and requires verification against the applicable NECB edition before fixture procurement – there may be little or no margin.

Spacing check: For 33 fixtures (30,000 lm) in a ~6x6 grid: ~17’ x 12’ spacing, S/MH ratio ~0.85. This is within the typical S/MH max of 1.0-1.5 for wide-distribution high bays, so uniformity should be achievable.

Existing fixture reference: The current 114 fixtures with 2x 32W T8 tubes each draw ~7,296W lamp load (228 tubes × 32W). T8 fixtures use electronic ballasts (~5% loss), giving a total draw of approximately ~7,660W. Each T8 32W tube produces approximately 2,600-2,850 initial lumens depending on CRI – the CRI 80+ lamps (TL850) produce ~2,850 lm, while the CRI 90+ lamps (TL941) produce ~2,600 lm due to the broader-spectrum phosphors required for high CRI. Using ~2,750 lm as a weighted average for the mixed population gives ~627,000 lm total. Applying a combined light loss factor of ~0.75 (aging lamps, dirt, ballast factor) yields ~470,000 maintained lumens. At CU ~0.58 over 7,200 ft², that’s roughly 38 fc — well below the 70 fc target. The LED replacement at ~7,200W is comparable wattage to the existing fluorescents but delivers roughly 1.8x the maintained illuminance due to higher efficacy and a fresh LLF.

Future state impact: When walls are renovated from brick (~25%) to painted drywall (~65%), the CU increases to approximately 0.60-0.65. The ceiling reflectance (~35%, unchanged) limits the upper range – achieving CU above 0.65 would require a brighter ceiling. The same fixtures would then produce roughly 73-78fc – the 0-10V dimming accommodates this without changing hardware.

Photometric Calculation – Remaining Prerequisites

The preliminary estimate above is sufficient for planning. A final photometric layout requires:

• Confirmed floor dimensions (length x width) — 102’4“ × 70’4“
• Uniformity requirement – a min:avg ratio of 0.7 or better is a reasonable starting target for recreational sports (minimum 49fc if average is 70fc), consistent with general IES guidance. Note: IES RP-6 historically specified uniformity as a max:min ratio (typically 2.0:1), not min:avg. Verify the exact metric and value from the applicable edition of RP-6 (or its successor) before using as a design criterion. Confirm this is acceptable or if a tighter ratio is needed.
• Glare requirement – is there a specific UGR target, or “as low as reasonably achievable”? The sports played in the gym (basketball, volleyball, badminton) determine how critical upward glare control is.
• Fixture IES photometric files – once candidate fixtures are identified, their published photometric data (.ies files) drive the layout calculation, including spacing-to-mounting-height ratio (S/MH).
• Projection screen location – gymnasium fixtures at full brightness may wash out the screen surface. The photometric layout should account for fixture placement and shielding near the screen.
• Structural mounting points – the exposed ceiling structure determines where fixtures can physically be hung. This may constrain the ideal photometric layout.
• Alberta energy code (NECB or equivalent) maximum lighting power density (W/ft²) for gymnasiums – confirm the fixture selection and layout comply.

Surface Reflectances

The photometric calculation should use the current state for design purposes – this is the worst case (darkest surfaces, least reflected light). The future state will increase reflectance, which raises effective illuminance. The 0-10V dimming can then be used to dial back output if needed.

Note: The wall change from brick (~25%) to painted drywall (~65%) more than doubles wall reflectance and will measurably increase overall light levels (estimated 10-15% at RCR 2.40, depending on the fixture distribution). The ceiling reflectance (~35%) is the dominant factor for downlight distributions and remains unchanged. This reinforces the value of 0-10V dimming for post-renovation adjustment.

Zoning

Button station presets could include:

• “Full Bright” – all gymnasium zones at 100%
• “Half Gym A / B” – one half on, the other off (if the zone split is needed)
• “Off” – all gymnasium zones off

Wiring

• 0-10V signal pairs from the Response 0-10V Gateway to each fixture or group of fixtures. 18 AWG minimum, shielded twisted pair recommended (especially near SmartPack power feeds). Maximum run length depends on driver count per circuit – typically ~150’ at 18 AWG with a few drivers, shorter with many. The gateway can be mounted near the fixtures (closer to the loads) to keep 0-10V runs short.
• Cat 5e/6 from the Paradigm ACP to the Response Gateway (sACN over Ethernet). A direct point-to-point Ethernet connection is preferred – it eliminates network dependency for the gymnasium layer at zero cost, since both devices are in or near the rack closet. If a direct connection is impractical, sACN can use the lighting VLAN (VLAN 22) on the M4250 switch, but IGMP snooping must be confirmed active on that VLAN to contain sACN multicast traffic.
• Line power to the gymnasium fixtures from the electrical panel (separate from SmartPack circuits). The 0-10V signal controls dimming, not line power.
• Button station wiring from wall-mounted stations to the Paradigm. Low-voltage (ETC button stations use a proprietary low-voltage bus).

Event Layer – ETC SmartPacks (via Paradigm ACP DMX Output)

Available Equipment

TODO: The “12x1200W, wall-mount” specs are from memory/nameplate observation – ETC’s published SmartPack datasheets cover the touring/portable variants, not the wall-mount. Verify the channel count and per-channel wattage from the physical nameplate on the installed unit, and source the wall-mount-specific datasheet or installation manual from ETC if available.

24 channels of dimming at 1200W per channel. The SmartPacks are existing equipment being reused – they provide ample dimming capacity for the space and are already proven in the facility. Each SmartPack requires a 60A two-pole breaker and is hardwired with a single feeder (6/4 SO or SJO cable). See Electrical Plan for circuit details.

Both SmartPacks will be wall-mounted together in the rack closet. This keeps DMX cable runs short (from the Paradigm ACP’s DMX output) and centralizes all power distribution equipment. Relocating the kitchen SmartPack constitutes a new installation under the Safety Codes Act and requires a fresh inspection. A pre-installation condition assessment is not needed – SmartPacks are built for heavy theatrical use, and any channel issues will surface during commissioning.

Why SmartPacks + Paradigm ACP? The SmartPacks accept DMX512, and the Paradigm ACP has built-in DMX512A output ports. AMX sends RS-232 commands to the Paradigm via PSAP (the same serial link that controls the gymnasium layer), and the Paradigm outputs DMX512 to the SmartPacks. This eliminates the need for a separate RS-232-to-DMX bridge – one controller handles both layers. Presets are stored locally in the Paradigm’s non-volatile memory and can be recalled from button stations or the Paradigm’s front panel if AMX is unavailable. See equipment reference.

Alternative: DFD 2322DMX. A DFD 2322DMX RS-232-to-DMX bridge is available as a documented alternative if the Paradigm’s DMX output proves unsuitable for the SmartPacks (e.g., timing issues, channel count limitations). The 2322DMX would restore the original two-serial-link architecture. See equipment reference.

SmartPack Compatibility

ETC SmartPacks are forward-phase (leading-edge) dimmers. This affects fixture selection:

• Incandescent/halogen: Fully compatible, dims smoothly
• LED fixtures: Must use LED fixtures with drivers rated for forward-phase dimming. Not all LED drivers are compatible – incompatible drivers can cause flickering, buzzing, limited dimming range, pop-on (snapping to minimum brightness instead of rising from zero), dead travel (dimmer range with no visible output change), or ghosting (faint glow when dimmer is “off” due to SCR leakage current). ETC publishes general forward-phase dimming compatibility guidance, but a SmartPack-specific vetted fixture list is not available – specific fixture-dimmer validation requires bench testing before bulk procurement.
• Non-dim loads: SmartPacks can be configured per-channel for non-dim (switched) mode if some circuits don’t need dimming

Fixture selection should prioritize SmartPack-compatible LED fixtures to get both the energy savings of LED and the dimming flexibility the SmartPacks provide. (See equipment reference for SmartPack specs.)

Alternative Considered: ETC ArcSystem Pro (Rejected)

ETC ArcSystem Pro fixtures (DMX-controlled architectural LEDs with built-in drivers) were evaluated as an alternative to conventional fixtures on SmartPacks. ArcSystem would eliminate the SmartPacks entirely — fixtures take DMX directly from the Paradigm ACP and handle their own dimming, with smooth dimming to near-zero (dim-to-dark), CRI 90+, and 50,000-hour LED life.

Why it was rejected: cost. For a 102x70’ gymnasium event layer (~20-28 fixtures for stage wash, general fill, and perimeter zones), ArcSystem Pro four-cell fixtures at ~$1,100-1,300 USD each put the fixture-only cost at $24,000-35,000. Conventional LED or incandescent fixtures on the existing SmartPacks would be $3,000-10,000 for comparable coverage (quality forward-phase-compatible LED fixtures suitable for formal events; budget incandescent PARs are cheaper but have high lamp replacement costs).

However, the fixture-only comparison understates the SmartPack approach’s total cost. The SmartPacks are already owned, but making them usable requires significant infrastructure: new panel, two 60A/240V feeder circuits, 24 individual home runs from the rack closet to fixture locations, conduit, permit, and inspection. This infrastructure cost is estimated at $11,000-27,000 CAD (see Electrical Plan). ArcSystem simplifies wiring to DMX daisy-chains and eliminates SmartPack feeders, so its infrastructure cost is substantially lower. When infrastructure is included, the total installed cost gap narrows from a large multiple to an estimated 0-40% premium for ArcSystem over the SmartPack approach.

The SmartPack approach was chosen because the SmartPacks are already owned and proven, the infrastructure costs are largely shared with the gymnasium layer renovation (new panel, conduit paths), and the cost risk is lower. ArcSystem is arguably a better product for this application – ETC markets it for houses of worship and multi-purpose spaces, not just dedicated performance venues – but the remaining cost premium and the additional complexity of procuring a new product line tipped the decision toward reusing existing equipment.

Fixture Protection

The gymnasium ceiling is exposed (open structure) – there is no slatted ceiling to shield event fixtures from ball impacts. Any theatrical or architectural fixture mounted in the open ceiling needs physical protection.

Options:

The SSRC Spotlight Cage is the better fit for individual fixtures scattered across zones. The Gym Light Cage is better if fixtures are clustered in rows along a pipe or truss. Both are available in black, white, silver, or custom colors.

Fixture protection cost should be factored into the per-fixture budget when selecting event layer fixtures.

Fixtures

TBD. Event fixtures should be:

• Forward-phase (leading-edge) dimmable – compatible with ETC SmartPacks
• Good dimming curve (smooth, low minimum without flicker)
• High CRI for formal events and food service
• Appropriate fixture types per zone (general, accent, stage)

Zoning

All 24 SmartPack channels are available exclusively for the event layer. Zoning can be fine-grained.

Control Path (Both Layers)

                                          PARADIGM ACP
                                          (enclosure TBD -- ERn or DIN rail)
                                          ──────────────────────────

Button stations ──────► ETC Paradigm ACP ──── sACN ─── Ethernet ──► Response 0-10V
(wall-mounted,                │                                      Gateway (RSN-LV-R3)
 primary authority)           │                                           │
                              │                                      0-10V (24ch)
                              │                                           │
                              │                                           ▼
                              │                                     Gymnasium fixtures
                              │                                     (ceiling-mounted)
                              │
                              ├──── DMX512 ──┬──► SmartPack #1 (Ch 1-12)
                              │              │
                              │              └──► SmartPack #2 (Ch 13-24)
                              │                        │
                              │                        ▼
                              │                   Event fixtures
                              │                   (ceiling/wall-mounted)
                              ▲
                              │
AMX processor ── RS-232 ──────┘
(via EXB-COM2 port 1,
 PSAP protocol)

Wiring

The event layer requires new wiring from the SmartPacks to fixture locations:

• Individual home runs from each SmartPack channel to its fixture group. Each SmartPack output channel requires a dedicated circuit to its load – different channels cannot share conductors because each carries an independently dimmed (phase-chopped) waveform. Multiple fixtures within the same zone can be paralleled on a single channel, up to the 10A/1200W per-channel limit.
• Existing fluorescent wiring is not reusable for per-channel dimming. New circuits required.
• DMX cable from the Paradigm ACP’s DMX512A output to both SmartPacks, in its own low-voltage raceway separate from SmartPack power feeds. A 120-ohm DMX termination plug must be installed on the last SmartPack in the daisy-chain (per ANSI E1.11). Alternatively, since the Paradigm ACP has two DMX ports, each SmartPack could be driven from its own port to avoid daisy-chaining entirely.

Design Considerations

Existing Wiring

The current fluorescent fixtures are switched in 3 groups:

1. Center group: The 2 short rows of 8 plus 2 fixtures on the underside of the control room jut-out (18 fixtures)
2. Inner group: The row of 16 on each side of the short rows, mirrored (32 fixtures)
3. Outer group: The remaining 4 rows of 16 (64 fixtures)

The existing wall switches are dry-contact, connected to a switching box next to the electrical panel. This wiring is not directly reusable for either layer – SmartPack channels need individual home runs, and the gymnasium fixtures will likely need new circuits as well (different fixture locations, 0-10V signal pairs, different switching). The existing conduit paths from the old switching box cannot be reused as pull paths either – the old switching box and the new rack closet are on opposite sides of the facility, so new conduit runs are required.

The existing 3 groups may inform the gymnasium zoning layout – the center/inner/outer split provides a basic concentric zone structure.

Emergency / Exit Lighting

Emergency and exit lighting is on a completely separate system, independent of both the SmartPack circuits and the gymnasium layer. No AMX preset or SmartPack fault can disable it.

There is an always-on emergency light in the entryway (battery-backed, always illuminated). This is existing and remains in place — out of scope for the lighting renovation.

EXB-COM2 Port Allocation

The AMX EXB-COM2 in the South Gym rack has one serial port allocated for lighting:

A single RS-232 link to the Paradigm ACP controls both lighting layers. Port 2 is available for future expansion.

AMX Scene Presets

AMX presets coordinate both layers simultaneously. Each preset specifies the state of both the gymnasium layer and the event layer, all managed through the Paradigm ACP via PSAP commands:

Note: If the gymnasium layer button stations are active (wall switches on), AMX cannot override them to off. The “Wedding” preset would leave the gymnasium layer in whatever state the button stations dictate – e.g., full sports lighting overlaid with dim event accents, the opposite of the intended atmosphere. In practice, whoever sets up for an event would turn off the gymnasium wall switches before recalling an event preset. AMX programming should include a PSAP status query before or after recalling event presets, and display a touch panel warning if gymnasium button station priority is still active (e.g., “Gymnasium wall switches are still on – please turn them off”).

Open Questions

Electrical & Code

• What is the distance from the rack closet to the farthest fixture location? Long runs affect voltage drop and conductor sizing (applies to both layers).
• How many conductors will share each conduit from the closet to fixtures? Conduit fill derating (CEC Table 5C) could require upsizing wire.
• Forward-phase dimmers produce harmonic content on neutral conductors (the chopped waveform is rich in odd harmonics, especially 3rd, which adds constructively on the neutral). Do shared neutrals need to be upsized per CEC Rule 4-004? Note: LED loads on forward-phase dimmers produce worse harmonic content than incandescent loads because the LED driver (a switch-mode power supply) interacts with the chopped waveform. The gymnasium layer uses 0-10V dimming, which avoids the additional harmonics from waveform chopping, but LED drivers themselves draw non-sinusoidal current regardless of dimming method – gymnasium circuit neutral sizing should also be checked.
• Does minimum illumination for paths of egress need to be enforced as a floor in AMX programming and/or Paradigm programming (e.g., “Wedding” dimmed zone can’t go below code-required levels)?
• Has the available fault current at the new panel been determined, and do the SmartPacks’ internal overcurrent devices have adequate interrupting ratings?
• Does the full scope of work (SmartPack relocation, new panel, home runs, gymnasium fixtures, Paradigm, button stations) need a single electrical permit, and has the AHJ been consulted?
• Are there any code requirements for emergency or exit lighting (Alberta Building Code / NBC)?
• What electrical circuit feeds the gymnasium fixtures? This is separate from the SmartPack circuits. Sizing depends on fixture count and wattage.
• Where is the pot light circuit fed from? No breaker was found at the local panel — the circuit may originate from a different panel elsewhere in the building. Needs to be traced before renovation.
• Where is the existing installed SmartPack fed from? No breaker was found at the local panel — power source unknown. Needs to be traced before the SmartPack is relocated/reconnected to the new panel.
• What is the Paradigm ACP’s power requirement and how is it fed? Depends on enclosure choice (ERn has its own AC input; DIN rail P-ACP-D uses an external 24V PSU).
• What is the Response 0-10V Gateway’s power requirement? Requires 12-24 VDC via external PSU (ETC HDR-60-24, catalog number PS537). Where is the gateway mounted, and how is the PSU powered?

Current State Verification

• Sylvania lamp identification: The Sylvania “Octron Vivid Value 32W 4100K” lamps need a physical inspection to record the exact part number from the tube markings. “Vivid” in Sylvania’s naming sometimes implies CRI 90+, but “Value” may indicate a lower-CRI variant. The CRI affects the lumen estimate in the existing fixture reference calculation (~2,600 lm for CRI 90+ vs. ~2,850 lm for CRI 80+).
• SmartPack wall-mount variant: Verify the 12-channel / 1200W-per-channel rating from the physical nameplate on the installed SmartPack. ETC’s published datasheets cover the touring/portable SmartPack variants. Source the wall-mount-specific datasheet or installation manual from ETC — this is also needed to confirm the minimum load threshold per channel (see Event Layer open questions).

Gymnasium Layer – Fixture Selection & Photometric Design

• What uniformity ratio is required? A min:avg of 0.7 (min 49fc at 70fc avg) is a reasonable starting target per general IES guidance. Note: IES RP-6 historically used max:min (not min:avg) as its uniformity metric – verify the applicable edition and correct metric type. Is this acceptable, or is a tighter ratio needed?
• What specific UGR (Unified Glare Rating) target is required, given basketball and volleyball involve looking upward? Or is “as low as reasonably achievable” sufficient?
• What impact rating (IK rating) is needed for fixture lenses? IK08 minimum, IK10 preferred for gymnasium use. Confirm based on sports played.
• What CCT (color temperature) for gymnasium fixtures? 4000K-5000K is typical for sports. Single fixed CCT likely sufficient since atmospheric lighting is the event layer’s job.
• What minimum CRI is required? CRI 80+ for sports; CRI 90+ if games may be video recorded or streamed.
• What is the maximum acceptable ambient light level on the projection screen surface? Gymnasium fixtures at full brightness may wash out the screen – fixture placement and shielding near the screen matters.
• Where are the structural mounting points in the exposed ceiling? This constrains where fixtures can physically be hung and may limit the photometric layout.
• Does the Alberta energy code (NECB or equivalent) set a maximum lighting power density (W/ft²) for gymnasiums? Confirm compliance with fixture selection.
• How many gymnasium zones/circuits are needed?
• Do any use cases need a “Half Gym” zone split (e.g., two classes sharing the gym)?

Event Layer – Fixture Selection

• Event layer coverage area: The ArcSystem cost comparison references “~20-28 fixtures for stage wash, general fill, and perimeter zones,” but no document explicitly defines the physical coverage area or zone boundaries for the event layer. Is the event layer intended to cover the full 102x70’ gymnasium floor, or a subset (e.g., front half only for stage events, full floor for dinner events)? This affects fixture count, wattage, circuit count, and SmartPack channel allocation.
• What is the minimum dim level required for events like weddings – is 10% sufficient, or does the aesthetic need fixtures that dim below 5%?
• Do SmartPacks have a minimum load threshold per channel below which forward-phase dimming doesn’t work correctly with LED drivers? SCR dimmers generally require ~25-60W minimum load per channel for reliable dimming. If per-channel LED load is below this threshold, phantom load modules may be needed. Check the SmartPack installation manual for ETC’s specific guidance.
• Is tunable white (variable CCT) needed to shift warmer for ceremonies and cooler for sports, or is a single fixed color temperature acceptable?
• What minimum CRI is required, considering formal events and food service (dinner events)?
• Are perimeter/wall accent fixtures a different type (strip, wall-wash, sconce) than the general field fixtures, and have those been separately checked for forward-phase compatibility?
• Does the stage/front zone need a different fixture type than the general field (e.g., lower-mount theatrical fixture)?
• How many event zones/circuits are needed (up to 24 available)?

Physical Installation

• What is the usable wall area in the rack closet for two SmartPacks, and is there space for both while maintaining code-required working clearances in front of all electrical equipment? (Closet is 86“ wide × 165“ deep × 105“ high.)
• How do SmartPack output wires exit the units (top/bottom/side), and is there clearance for conduit sweeps given the rack and other equipment?
• What is the thermal load from both SmartPacks, and has it been added to the rack closet ventilation sizing?
• What is the demolition plan for existing fluorescents – has an asbestos survey been done on fixture bodies, ballasts, or ceiling materials?
• Do existing ballasts contain PCBs (pre-1979) requiring hazardous waste handling?
• What happens to the existing dry-contact switching box once decommissioned?
• Is the renovation happening in a fully vacated gym, or are there schedule constraints (school calendar, events) that limit the work window?
• What lift equipment can physically enter the gym, and are doors wide enough?
• Can the existing ~8 daisy-chain groups be mapped to inform the new zoning layout?
• Where will the Paradigm ACP be mounted (rack closet, near the electrical panel, elsewhere)? The enclosure type is TBD – either an ERn wall-mount control enclosure (Mk1 or Mk2) or a DIN rail enclosure with a P-ACP-D (Mk2 only).
• Where will the Response 0-10V Gateway be mounted? It can be near the ACP (rack closet) or near the gymnasium fixtures to keep 0-10V cable runs short. DIN rail mount, requires only Ethernet and 24V DC power.
• Where will the Paradigm button stations be mounted? Near the main entrance? Multiple locations?

Control Integration

• Preset name alignment: The preset list in this file (“School Gym,” “Wedding,” “Dinner Event,” “Youth Night,” “Cleanup,” “Off” — 6 presets) does not match control.md (“School Gym,” “Wedding,” “Youth Night,” “Dinner Event,” “Presentation” — 5 presets; no “Cleanup” or “Off,” adds “Presentation”). Both documents need to agree on a single canonical preset list. See also control.md open question on preset-by-subsystem matrix.
• What fade times are required per preset (e.g., slow crossfade into “Wedding,” snap to “Cleanup”)?
• When AMX fires a room preset, what is the defined sequence between lighting (both layers), audio, and video commands?
• For the M32R override scenario, is there a corresponding lighting state change?
• Is there a requirement for auto-off after inactivity (occupancy sensing)? The Paradigm supports occupancy sensor inputs if needed.
• Is time-based scheduling needed (e.g., “School Gym” at 7 AM, “Off” at 10 PM)? The Paradigm supports time-based scheduling natively.
• The Paradigm does not have a built-in heartbeat like the 2322DMX’s H 1. AMX must use poll-based watchdog (periodic PSAP status queries) to detect a dead serial link. What polling interval is appropriate?
• How many Paradigm presets are needed to cover both gymnasium and event layer scenes? The Paradigm supports a large preset count – confirm capacity for the combined scene list.
• Should a button station near the gymnasium entrance include event layer preset buttons (e.g., a “Wedding” button) for non-technical fallback?
• What is the DMX channel assignment plan for the SmartPacks (which Paradigm DMX channels map to which SmartPack channels/fixture zones)?
• Who is responsible for configuring the Paradigm ACP in ETC LightDesigner (presets, zones, button station assignments, DMX channel map)?
• How is the button station “Off” preset configured in LightDesigner – as a 0% assertion (button station priority remains active, blocking AMX) or as a priority release (freeing AMX to take over gymnasium zones)? The intended behavior is a priority release. This must be explicitly configured.
• What is the Paradigm failure recovery path for each layer? If the Paradigm ACP hardware fails: (a) What do the gymnasium fixture LED drivers do on loss of 0-10V signal – default to 100%, default to 0%, or hold last value? This is configurable on many drivers and should be specified as “default to 100%” for safety. (b) How long does the Response 0-10V Gateway hold its last received sACN values before timing out? (c) Can the DFD 2322DMX serve as an emergency DMX source for the event layer SmartPacks, and can it also drive the Response Gateway’s DMX input for the gymnasium layer?
• Should AMX programming include a PSAP status query when recalling event presets, to detect and warn if gymnasium button station priority is still active?
• Does the 6/4 SO or SJO cable type for permanent SmartPack feeder wiring comply with CEC requirements, or should conductors in conduit (e.g., RW90 in EMT) be used instead? Confirm with the electrical contractor – SO/SJO is a portable cord type that may not be permitted for permanent wiring under the CEC without AHJ approval.

Cross-Reference Updates Needed

The Paradigm-as-both-layers architecture affects several other plan documents:

• control.md – AMX Responsibilities table: Paradigm ACP controls both layers via PSAP. Update serial protocol details, monitoring, and failure/fallback.
• equipment-reference.md – add ETC Paradigm ACP entry with specs, PSAP protocol, and button station details. Update 2322DMX entry as alternative/spare.
• electrical.md – update DMX control path (Paradigm ACP replaces 2322DMX as DMX source), RLNK outlet 4 now spare, grounding references.
• rack.md – position 22 now available (Paradigm ACP mounts in ERn or DIN enclosure, not in rack). RLNK outlet 4 now spare.
• networking.md – update EXB-COM2 references (serial bridge to Paradigm ACP, not 2322DMX), failure table, IP assignment notes.

South Gym AV Rack

Location

The AV rack will be in a closet at the front of the room.

Closet dimensions

86“ wide × 165“ deep (measured from the far wall to the door, which is perpendicular to the long wall) × 105“ high (8’9“).

Closet details

• Closet door is hinged, swings outward. Does not block rack or SmartPack access.
• Door is wide enough to carry in a fully assembled 42U rack – no need to build in place.
• Minimum 36“ clear working space in front of the rack and SmartPacks per electrical code is confirmed.
• Closet has lighting for maintenance work.

Installation sequence

All installation is surface-mount – no in-wall rough-in or wall finish dependency. Conduit, boxes, and rack can be installed in any practical order. Only constraint: the fiber wall box should be in place before the rack is positioned in front of it.

The rack is already owned and will be reused from its current location, just relocated to the South Gym closet. No lead time or ordering freeze concern.

Rack Layout

Middle Atlantic ERK-4025 enclosed rack — 40U, 25“ OD depth (23-1/2“ usable between rails), 22“ OD width (19“ panel). No front or rear doors. No slide rails. See equipment reference. Layout from top to bottom. This will be updated as equipment is added or removed.

Sizes marked with * are estimated and will be confirmed as models are selected. Blank positions will shift as sizes are finalized.

• TBD: Finalize layout order (heat management, cable routing)
• What specific shelf model is planned for the Mac mini at U14? Middle Atlantic makes Mac mini-specific mounts – has one been selected?
• Is the shared 1U shelf at U15 (ClickShare + LP10) a vented shelf? Both devices generate heat and need airflow.
• Has the physical fit been verified for the ClickShare base unit and LP10 side by side on a single 1U shelf?
• Are horizontal cable managers (1U) planned at any positions in the layout? None are currently allocated.
• Are vertical cable managers planned for the sides of the rack?
• Is a rack elevation drawing (to scale) planned as an installation deliverable?
• Is there a cable labeling standard for the project (Brady, P-touch, heat-shrink) and naming convention?
• AMX EXB-COM2: control.md states the EXB-COM2 is “placed in the South Gym rack on VLAN 21,” but it does not appear in the rack layout table. Where is it physically mounted — in the rack (which U position?), on the closet wall, or on a DIN rail? It needs one Ethernet port on the M4250 switch.
• Raspberry Pi (Bitfocus Companion): control.md describes a Raspberry Pi running Bitfocus Companion as a fallback control interface. Where is it physically located — in the rack, on a shelf, or elsewhere in the closet? It needs one Ethernet port on the M4250 switch and power (USB-C or PoE HAT).
• Paradigm ACP enclosure: Position 22 notes the Paradigm ACP is not rack-mounted (ERn or DIN enclosure). Where in the closet will the enclosure be mounted? The ERn needs wall space; DIN rail needs a rail and 24V PSU. Document the planned location.
• Response 0-10V Gateway (RSN-LV-R3): lighting.md notes this can be mounted in the rack closet or near gymnasium fixtures. Where is the planned mounting location? DIN rail, requires Ethernet + 24V DC (ETC HDR-60-24 PSU).

Depth Verification

All devices fit within the ERK-4025’s 23-1/2“ usable depth between rails. The deepest device is the Peavey Pro-LITE 5.0 at 17.25“ chassis + ~1.5“ Speakon connector + ~1.5“ cable bend = ~20.25“, leaving ~3.25“ clearance. The Midas DL16 is only 8.9“ (225 mm) deep chassis — even with 24 rear XLR connectors (~1.2“) and cable bend radius (~2.5“), total is ~12.6“. The SVSi NMX-ACC-N9206 is 5.04“ deep — trivial even with rear Ethernet cables. No extender bays are needed.

PDU Outlet Allocation

The RLNK-915R has 9 individually controllable outlets. This table tracks which device is on which outlet for AMX power sequencing.

8 of 9 outlets allocated, 1 spare (outlet 4). The M4250 and IT switch are on always-on infrastructure power from the UPS (not behind a switchable RLNK).

• Has the aggregate draw of all RLNK outlets been verified to stay within the RLNK-915R’s max continuous rating (12A / 1440W at 120V; the 15A figure is the breaker/peak rating, not continuous)? Most device wattages are still TBD.
• Does the rack PC need a graceful shutdown signal before RLNK power is removed?

Not on RLNK:

Signal Routing & Cabling

Internal rack cabling for audio and video signal paths. All audio connections are balanced unless noted otherwise.

Audio: SVSi / N4321 decoder to BLU-100

SVSi decoder card and N4321 audio transceiver card Phoenix audio outputs (U10-11) to BLU-100 inputs (U24-25). Both sides are Phoenix (Euroblock) connectors, ~14U apart (~3-4 ft with cable management routing). Cable: Belden 8723 (2-pair, 22AWG, shielded twisted pair) – one pair per channel, stereo in a single jacket. Strip and terminate into Phoenix plugs at both ends. Balanced connection.

N4321 audio terminates at the BLU-100 (not DL16) so it’s available in both base mode and M32R passthrough mode.

Audio: BLU-100 to amplifiers

BLU-100 #1 Phoenix outputs (U24) to Pro-LITE 5.0 combo XLR/1/4“ inputs for amps #1 and #2 (U29-34). Amp #1 (ceiling speakers) and amp #2 (subwoofers) are fed from BLU-100 #1 outputs 1-3. Amp #3 (floor monitors) is not fed from the BLU-100 — it is driven directly from rack DL16 outputs 3-4 during M32R complex events (see audio plan). Custom cable: Belden 8451 (single pair, 22AWG, shielded twisted pair), Phoenix plug to Neutrik NC3MXX (XLR male). Balanced connection – required at this boundary (UPS ground to building ground, see Electrical Plan – Grounding). One cable per active output channel. ~4-7 ft each with cable management routing.

All three amps share the same ground reference (dedicated building circuits), so inter-amp connections (if any) have no ground boundary concern.

Audio: LP10 to BLU-100

Arylic LP10 line output (U15) to BLU-100 input (U24-25). Custom cable: 3.5mm TRS plug (LP10 end) split to two Phoenix plugs (BLU-100 end, one per channel L/R). Belden 8723 (2-pair shielded), ~4-5 ft with routing. Unbalanced – the LP10 3.5mm output is inherently unbalanced, so this is an exception to the balanced-by-default rule. Wire signal to hot (+), ground to cold (-) and ground on each Phoenix plug. No ground boundary concern: both devices are on UPS power via the RLNK (same ground reference).

Speaker cables

Speakon speaker cables exit the bottom rear of the rack. Conduit on the closet wall carries Speakon cables from the rack to rough-in points with Speakon connections in the ceiling at speaker locations.

Video: HDMI (rack PC and ClickShare to SVSi encoder)

HDMI cables from rack PC (U14) and ClickShare (U15) to SVSi encoder cards in the cage (U10-11). Passive HDMI cables – at 3-5U the cable run is well under 1m, far below the threshold where active cables become necessary (~15m+). Passive is simpler, cheaper, and has fewer failure modes.

Power Budget

Power consumption for all rack-mounted equipment. This will be updated as specific models are selected.

Amplifier power note

The Pro-LITE 5.0 power draw varies significantly with load:

Format: W (VA) — real power in watts, apparent power in volt-amperes. VA is the figure used for breaker/circuit sizing.

For UPS sizing and circuit planning, idle draw (90W per amp, 270W total for three amps) represents the baseline. Peak draw depends on speaker impedance and program level. Closet ventilation should account for sustained use at the expected operating load.

Electrical

Circuit requirements

Each circuit requires a dedicated breaker in the room’s new electrical panel (see Electrical Plan) and a receptacle in the rack closet. This table will be updated as equipment and UPS models are selected.

Amp breaker sizing note: The required breaker size depends on speaker impedance, which is TBD (speakers not yet selected). At 4Ω and 1/3 power, each amp draws ~15.7A (1880 VA), exceeding a 15A breaker’s continuous rating. 20A circuits provide headroom. At 8Ω, the draw drops to 10A and 15A circuits would suffice.

Amp circuit balancing: Three amp circuits across two panel legs – the electrician distributes them to balance the load (two on one leg, one on the other). See Electrical Plan.

Receptacle count

Receptacle rough-in location: All four receptacles (UPS + three amp circuits) are co-located – ceiling or low wall, depending on whether the rack closet ceiling is kept or removed. See Electrical Plan. Must be installed before the rack arrives.

Not accounted for:

• Ventilation fan (if active ventilation is selected, may need a receptacle or hardwired connection)

• SmartPacks are wall-mounted (not rack-mounted) — either in the rack closet or in a nearby electrical room, TBD. They will need their own circuits at their mounting location (not counted here).

• TBD: Confirm amp breaker sizing once speaker impedance is known

• TBD: SmartPack circuit requirements at mounting location (2x 12 channels @ 1200W/channel = 28,800W total capacity)

Ventilation

The rack closet is adjacent to the room’s return air conduit to the air handler. The plan is to vent rack exhaust heat into the return air path. Options:

• Passive grille: Cut a vent from the closet into the return air plenum. Relies on natural convection (hot air rises). Simplest, no moving parts, no maintenance – but may not move enough air if the rack is under heavy load.
• Thermostatically-controlled exhaust fan: Mount a fan at the top of the closet venting into the return duct, triggered by a temperature sensor. More reliable airflow, only runs when needed. Adds a small amount of complexity and a failure point (fan).
• Always-on inline fan: Fan in a short duct between closet and return plenum. Simplest active option but runs continuously whether needed or not.

The amps are the primary heat concern – each can generate significant heat under sustained use. A passive grille may be sufficient for idle/light use, but an active solution is safer for sustained operation.

• TBD: Ventilation approach (passive grille vs. active fan)
• TBD: UPS sizing (based on total rack power draw, excluding amps)
• TBD: UPS model selection (1x 2U, online double-conversion)

UPS Requirements

Online (double-conversion) UPS, 2U rack-mount, positioned at U39-40. Input: 120V, NEMA L5-20R receptacle, single-pole breaker (see Electrical Plan).

Runtime target: Momentary ride-through (30s-2min) is the primary requirement. Graceful shutdown (5-10min) is nice-to-have but not a hard requirement. No need for extended runtime. This keeps battery capacity and physical size minimal.

Thermal: UPS conversion losses (typically 5-10% of load) generate heat. The UPS is listed in the power budget table with this accounted for. Actual BTU/h is TBD pending UPS model selection. Airflow interaction with the amps (positioned directly above the UPS) is flagged separately under Thermal & Ventilation open questions.

Power failure behavior: Power loss is safe for the audio signal chain. When mains power fails, the amps (on dedicated circuits, not UPS-backed) cut immediately while the DSP/mixer stay on via UPS – but amps stop amplifying and BLU-100 output has nowhere to go. Power restore is the real consideration: amps power up with a live BLU-100 signal on their inputs. The Pro-LITE 5.0 is a modern Class D design with internal soft-start and output muting during power-up, which suppresses turn-on transients. The BLU-100 output limiters provide a second layer of protection. This is a standard configuration in professional AV (amps on dedicated circuits, DSP on UPS). Verify during commissioning that the Pro-LITE 5.0 does not produce an audible thump on power-up with a live input. If it does, the BLU-100s can be programmed to power up muted and require an AMX command to unmute after a delay.

Open Questions

Thermal & Ventilation

• What is the total rack heat load in BTU/h once all TBD power figures are filled in? This determines whether the ventilation plan is adequate.
• The SmartPacks are wall-mounted in the same closet – has their heat output been added to the ventilation sizing? They’re not in the rack but contribute to closet ambient temperature.
• What is the minimum CFM required to maintain safe closet temperature at sustained heat load? This requires knowing closet volume, return air plenum static pressure, and total BTU/h.
• What is the static pressure characteristic of the return air duct? A passive grille into a pressurized plenum may have reverse airflow depending on HVAC configuration.
• Has the HVAC contractor confirmed the return duct has capacity for the additional heat load from the rack closet?
• What is the realistic sustained amp operating scenario (speaker impedance and typical power fraction)? This drives ventilation sizing – the difference between idle (~920 BTU/h total for three amps) and 1/3 power at 2Ω (~15,600 BTU/h) is enormous.
• Is the equipment layout optimized for airflow direction? The amps (primary heat source) are mid-rack with the UPS below them – if airflow is bottom-to-top, UPS heat preheats the amp inlet air.

UPS

• What is the total VA load the UPS must carry? Most rack device wattages are still TBD.
• What is the UPS battery replacement interval and who is responsible for the maintenance schedule?

Patch Panel & Switch

• What SFP+ transceivers are needed for the M4250 fiber uplink (single-mode LC, wavelength, reach)?
• The M32R connects via umbilical to a floor drop. Is AES50 carried point-to-point to the rack DL16 within the umbilical, with a separate Ethernet run to the M4250? Or is it a single cable?

Rack Closet & Installation

• On which wall(s) are the SmartPacks mounted? Is there a dimensioned layout showing rack footprint, SmartPack positions, and clearance zones?
• Who has physical key access to the closet? If the closet is locked and AMX is down, there is no lighting control.
• What are the conduit paths from the closet to: projector/decoder (ceiling), N1115-WP wall plate (back wall), LED wall stub-out, speaker locations, and lighting fixture groups?
• Does the rack include a dedicated equipment grounding bus bar? (Depends on Middle Atlantic model.)
• What is the UPS battery replacement access plan? UPS at U39-40 (bottom of rack) needs several feet of clear floor space to slide batteries out.

South Gym Electrical Plan

Overview

A new electrical panel will be installed in the South Gym to serve the AV rack, lighting dimmers, LED wall (long-term), and other room loads. This document tracks the panel’s load requirements to determine the service size needed.

Wiring Diagram

Power distribution overview

                                    Main Building Service
                                    (capacity TBD)
                                            │
                                            │  Feeder: wire size TBD
                                            │  Conduit: type & run TBD
                                            │  Distance: TBD (voltage drop calc needed)
                                            │
                    ┌───────────────────────┴───────────────────────┐
                    │              NEW SOUTH GYM PANEL               │
                    │              100A–200A, 42-space               │
                    │              (bus rating & main bkr TBD)       │
                    │              Location: TBD                     │
                    └──┬──────┬──────┬──────┬──────┬──────┬──────┬──┘
                       │      │      │      │      │      │      │      │
     ┌─────────────────┘      │      │      │      │      │      └─────────────────────┐
     │           ┌────────────┘      │      │      │      └──────────┐                 │
     │           │           ┌───────┘      │      └──────┐          │                 │
     │           │           │         ┌────┘             │          │                 │
     │           │           │         │                  │          │                 │
     ▼           ▼           ▼         ▼                  ▼          ▼                 ▼
    UPS        Amp #1      Amp #2    Amp #3         SmartPack #1  SmartPack #2    Room circuits
   (TBD)       20A/        20A/      20A/           60A/240V      60A/240V       (LED wall,
               120V        120V      120V                                         ventilation,
                                                                                  convenience)

Rack closet power distribution

Four panel circuits feed the rack closet (1x UPS, 3x amp). SmartPack feeds are also in the closet but serve the lighting system.

PANEL                                              RACK CLOSET
─────                                              ───────────

UPS circuit ────► [L5-20R] ────► Online UPS (double-conversion)
(20A / 120V)                                         │
                                       ┌───────────┼───────────┐
                                       │           │           │
                                  Always-on   Always-on   RLNK-915R (PDU)
                                  (infra)     (infra)     (see RLNK detail below)
                                       │           │
                                  M4250 PoE+  IT switch
                                  (also feeds
                                   PoE devices
                                   below)


Amp #1 circuit ────► [L5-20R] ────► Peavey Pro-LITE 5.0 #1 (ceiling speakers)
(20A / 120V)                        (up to 1,880 VA @ 4Ω 1/3 pwr)


Amp #2 circuit ────► [L5-20R] ────► Peavey Pro-LITE 5.0 #2 (subwoofers, TBD if keeping)
(20A / 120V)                        (up to 1,880 VA @ 4Ω 1/3 pwr)


Amp #3 circuit ────► [L5-20R] ────► Peavey Pro-LITE 5.0 #3 (floor monitors, TBD if keeping)
(20A / 120V)                        (up to 1,880 VA @ 4Ω 1/3 pwr)

Amps are on dedicated circuits, not through the RLNK or UPS, due to high peak draw.

RLNK-915R outlet allocation

The RLNK is downstream of the UPS. AMX controls outlets 2-9 for power sequencing. Outlet 1 is always-on (not switchable) — it powers whenever the UPS is on.

Online UPS ────► RLNK-915R
                        │
                        ├──── Outlet 1:  AMX SVSi frame (always-on, not switchable)
                        │
                        ├──── Outlet 2:  MIPRO ACT-727a #1 + #2 (dual-head IEC cable)
                        │
                        ├──── Outlet 3:  NovaStar VX4S #1 + #2 (dual-head IEC cable, long-term)
                        │
                        ├──── Outlet 4:  (spare)
                        │
                        ├──── Outlet 5:  BSS BLU-100 #1 + #2 (dual-head IEC cable)
                        │
                        ├──── Outlet 6:  Midas DL16 (rack)
                        │
                        ├──── Outlet 7:  Rack PC (Mac mini)
                        │
                        ├──── Outlet 8:  Barco ClickShare
                        │
                        └──── Outlet 9:  Arylic LP10

SmartPack power and output distribution

Both SmartPacks are wall-mounted in the rack closet. Each is hardwired directly off the panel (not plug-and-cord) with a 60A / 240V single-phase feed using 6/4 SO or SJO cable and a 2-pole breaker. Two SmartPacks = 120A of panel capacity for dimmers. Three-phase (120/208V at 40A per unit) is an option but not required. See the ETC SmartPack FAQ for detailed input specifications. The ampacity rating of the SmartPack input terminals and maximum wire size they accept should be verified by the electrician from the unit during installation.

The SmartPack’s single feeder cable (6/4 SO or SJO) carries two hots, one shared neutral, and ground. In a single-phase 240V (split-phase) system, harmonics do not add on the neutral the way they do in three-phase systems — in split-phase, odd harmonics (including the 3rd) remain anti-phase between legs and cancel on the neutral, just like the fundamental. However, the neutral still carries current from any load imbalance between the two legs (channels are not always dimmed equally), and forward-phase dimmer waveforms have high crest factors that stress neutral conductors. ETC’s recommended 6/4 cable has a full-size neutral (same gauge as the hots), which handles the worst-case imbalance scenario (all load on one leg). The electrician should verify neutral adequacy during installation.

PANEL                                        RACK CLOSET (wall-mounted)
─────                                        ──────────────────────────

SmartPack #1 feed ────►  ┌───────────────────────────────────────────────────┐
(60A / 240V, 2-pole)     │   ETC SmartPack #1                               │
                         │   12ch x 1200W  (14,400W capacity)               │
                         │                                                   │
                         │   DMX In ◄── ETC Paradigm ACP DMX port (Ch 1–12) │
                         │                                                   │
                         │   Outputs (individual home runs to fixtures):     │
                         │       Ch 1  ──────► Fixture zone                 │
                         │       Ch 2  ──────► Fixture zone                 │
                         │       Ch 3  ──────► Fixture zone                 │
                         │       ...                                        │
                         │       Ch 12 ──────► Fixture zone                 │
                         └───────────────────────────────────────────────────┘


SmartPack #2 feed ────►  ┌───────────────────────────────────────────────────┐
(60A / 240V, 2-pole)     │   ETC SmartPack #2                               │
                         │   12ch x 1200W  (14,400W capacity)               │
                         │                                                   │
                         │   DMX In ◄── ETC Paradigm ACP DMX port (Ch 13–24)│
                         │                                                   │
                         │   Outputs (individual home runs to fixtures):     │
                         │       Ch 13 ──────► Fixture zone                 │
                         │       Ch 14 ──────► Fixture zone                 │
                         │       Ch 15 ──────► Fixture zone                 │
                         │       ...                                        │
                         │       Ch 24 ──────► Fixture zone                 │
                         └───────────────────────────────────────────────────┘

Note: Existing daisy-chain wiring from the old switching box is NOT reusable --
      the old switching box and the new rack closet are on opposite sides of the
      facility. New conduit runs and individual home runs are required from each
      SmartPack channel to its fixture group. Each output channel has a 10A/120V
      internal breaker; the electrician determines wire size based on run lengths
      to fixture locations and the number of conductors sharing conduit (standard
      installation calculations). Panel-level demand calculation per CEC Rule
      8-204 (schools) or Rule 8-210 (other occupancies) — whichever is more
      conservative — is part of the electrician's permit process. (Note: CEC
      Rule 8-200 applies to dwelling units and does not apply here.)

DMX control path

AMX (facility)                                    RACK CLOSET
──────────────                                    ───────────

AMX processor ────RS-232────► ETC Paradigm ACP ────DMX512────┬────► SmartPack #1 (Ch 1–12)
(remote, via                  (PSAP, presets                │
 network)                      stored locally)              └────► SmartPack #2 (Ch 13–24)

DMX cable must be routed in its own dedicated conduit, separate from SmartPack power feeds. Standard DMX cable (120Ω characteristic impedance per ANSI E1.11).

Room circuits (outside rack closet)

PANEL                                    ROOM LOCATIONS
─────                                    ──────────────

LED wall circuit ────────────────────►   [conduit stub-out at mounting wall]
(TBD, long-term)                         Conductors TBD -- pull now or leave empty.
                                         Power at display, not in rack.
                                         VX4S processors are in the rack (separate power).


Ventilation fan ─────────────────────►   [fan location in/near rack closet]
(TBD, if needed)                         May share a circuit.


Convenience outlets ─────────────────►   [room outlets at event-accessible locations]
(15A / 120V)                             Qty and locations TBD.

Conduit for LED wall power and data will be run during initial renovation to avoid retrofitting later, even though the wall itself is a long-term addition.

PoE-powered devices (no panel circuit – powered from M4250 switch)

M4250 PoE+ switch                                ROOM LOCATIONS
(always-on, UPS)                               ──────────────
        │
        │
        ├──── PoE (802.3at) ────── Cat 6A ──────► NMX-DEC-N1222A decoder
        │                                         (ceiling, at projector)
        │                                         ~25W, Class 4
        │
        ├──── PoE (802.3af) ────── Cat 6A ──────► NMX-ENC-N1115-WP encoder
        │                                         (back wall)
        │                                         ~8W, Class 3
        │
        ├──── PoE (802.3af) ────── Cat 6A ──────► AMX EXB-COM2
        │                                         (in rack)
        │                                         ~5W, Class 2
        │
        └──── PoE (TBD) ────────── Cat 6A ──────► AMX touch panel(s)
                                                  (wall-mounted)
                                                  TBD

These devices draw power from the network switch via PoE and do not require dedicated electrical circuits.

Other small devices not in the PoE or RLNK diagrams above (power source/location TBD, but should be accounted for in the overall load):

• Raspberry Pi (Bitfocus Companion fallback controller) — ~15W, USB-C powered; in rack, needs a power source (likely RLNK or UPS always-on)
• ETC Paradigm ACP — power depends on enclosure choice (ERn has AC input; DIN rail P-ACP-D uses external 24V PSU). See lighting plan.
• ETC Response 0-10V Gateway — 18-24 VDC via ETC PS-DIN24 PSU (~10W). Location TBD (rack closet or near fixtures). See lighting plan.

Panel Load Summary

All loads fed from the new panel. This table will be updated as equipment is selected and loads are confirmed.

AV rack detail

Four circuits feed the rack closet (1x UPS, 3x amp). See Rack Plan – Electrical for the full circuit-by-circuit breakdown, outlet allocation, and amp breaker sizing notes.

The UPS is an online double-conversion unit (AC-DC-AC topology: rectifier → DC bus → inverter), producing a clean sine wave – better for AV equipment than line-interactive or standby designs. It takes 120V input via a NEMA L5-20 receptacle (single-pole breaker, standard conductor sizing). Three amp circuits across two panel legs – the electrician distributes them to balance the load (two on one leg, one on the other). Amp receptacles are co-located with the UPS outlet (ceiling or low wall, depending on whether the rack closet ceiling is kept or removed). The distance from the panel to the rack closet receptacles is almost certainly within 20’, making voltage drop negligible.

The IT switch does not require an isolated ground or dedicated neutral – it is powered from a rack PDU on the always-on infrastructure circuit (same as the M4250). Additional RLNKs, if added, do not require additional panel circuits because they are downstream of the UPS.

Lighting dimmers detail

Both SmartPacks are wall-mounted in the rack closet. Each ETC SmartPack 12x1200W has a total dimming capacity of 14,400W (12 channels x 1200W). Two SmartPacks = 28,800W total capacity. However:

• With LED fixtures, actual draw per channel will be well under 1200W (likely 100-300W depending on fixtures). The SmartPacks’ full capacity will not be used.
• Panel wiring must support each SmartPack’s 60A / 240V single-phase hardwired feed (2-pole breaker per unit, 120A total for both).
• Actual fixture load will determine the true demand on the panel. The dimmer capacity is the ceiling, not the expected operating load.

See Lighting Plan for dimmer, fixture, and zoning details.

Kitchen SmartPack decommissioning

The existing kitchen SmartPack is being relocated to the South Gym. The electrician handles the disconnect as part of the relocation scope and permit – no separate permit or inspection is required for the removal itself. Orphaned kitchen circuits get capped off in junction boxes or pulled at the electrician’s discretion. A pre-relocation condition assessment is not needed: SmartPacks are built for heavy theatrical use, and a kitchen lighting circuit is light duty. If a channel has issues, it will show up during commissioning, and individual triacs are replaceable.

LED wall detail

Long-term, one or two LED walls will replace the projector (see Video Plan). LED wall power draw depends on panel area, pixel pitch, and brightness. Typical indoor LED panels draw ~200-500 W/m² at full brightness. The NovaStar VX4S processors are in the AV rack and already counted in the rack power budget. The LED panels themselves will need power at their mounting location, fed from this panel. A junction box is needed at each mounting location to transition from building wiring to Neutrik powerCON connectors (the standard power interface for LED panels). If two panels are installed at separate locations (Option B), two separate conduit runs are required – the panels would be at least 20’ apart.

Conduit for LED wall power and data will be run during the initial renovation to avoid retrofitting later, even though the wall itself is a long-term addition.

Panel Sizing

The panel size (bus rating and number of breaker spaces) depends on total connected load. Key unknowns that affect sizing:

• SmartPack input configuration (resolved: 60A / 240V single-phase per unit, 2-pole breaker)
• UPS input requirements (model TBD)
• LED wall size and power (long-term)
• Actual lighting fixture selection (determines real dimmer load vs. 1200W/channel capacity)

Working estimate

For planning purposes, this estimates the likely operating load (not the theoretical maximum of every dimmer channel at full capacity):

The low end uses idle amps (270W) with minimum estimates; the high end uses moderate-use amps (1,875W) with maximum estimates. Per-leg current on a 120/240V split-phase panel cannot be calculated by dividing total watts by 120V — the 240V loads (SmartPacks, LED wall) draw equally from both legs and should be divided by 240V, while 120V loads contribute to a single leg. A rough breakdown:

• Low end (~5,300W): 120V loads ~1,270W (10.6A per leg if balanced) + 240V loads ~3,000W (12.5A per leg) ≈ ~23A per leg
• High end (~15,600W): 120V loads ~3,375W (28.1A per leg if balanced) + 240V loads ~12,200W (50.8A per leg) ≈ ~79A per leg

A 100A to 200A panel is a reasonable planning range, with the final size dependent on resolving the TBDs above. A 42-space panel would accommodate all foreseeable circuits with room for growth. Approximately 10-12 spaces are used (1x UPS, 3x amp, 2x two-pole SmartPack, 1-2x LED wall, 1-2x convenience), leaving ~70% spare – well beyond any 20-25% requirement.

Grounding & Bonding

The new panel uses the building’s existing grounding electrode system via the equipment grounding conductor in the feeder from the main panel. No separate grounding electrode is needed.

UPS power conductor isolation

The online double-conversion UPS regenerates the AC power waveform (rectifier → DC bus → inverter), stripping conducted noise from the hot and neutral conductors before they reach downstream equipment. However, the equipment grounding conductor (EGC) is continuous through the UPS — the UPS chassis is bonded to the building ground per code, and every downstream device’s chassis is bonded back to the building ground through that path. The UPS does not create a true galvanic break on the ground conductor.

Whether the UPS provides a new neutral-ground reference (i.e., creates a “separately derived system” per CEC Rule 10-104) depends on the specific UPS model — many small rack-mount UPS units pass the neutral through without re-deriving it. This must be verified when the UPS model is selected. If the UPS does not create a separately derived system, the power isolation benefits described below are reduced.

• Isolated ground (IG) wiring is not required. The UPS circuit is on its own dedicated branch circuit with no shared ground conductor in conduit with SmartPack circuits. The combination of power waveform regeneration and dedicated circuit routing provides adequate noise isolation without IG bus bars or IG-type receptacles.
• Rack grounding bus bar — a bus bar must be installed in the ERK-4025 rack and all rack equipment chassis bonded to it, providing a single-point ground reference that minimizes ground potential differences between devices. The ERK-4025 includes a 1/4-20 grounding stud and three 10-32 bonding studs. The bus bar bonds to the equipment grounding conductors (EGCs) of the branch circuits feeding the rack — since all branch circuits originate at the same panel, this creates a local star-ground point without requiring a separate home run. The electrician or P.Eng determines the bonding conductor size and termination point (typically #6 or #4 AWG to the incoming branch circuit EGC, or to a nearby building grounding electrode conductor if available). This is a safety and noise-control requirement independent of UPS topology.

Dimmer-to-AV noise isolation

SmartPack dimmer circuits and the UPS are on separate branch circuits with separate neutral conductors in the branch circuit wiring. However, all branch circuit neutrals terminate on the same neutral bus bar at the panel — SmartPack harmonic currents flow through this shared bus bar and create a small common-impedance voltage drop that couples onto the UPS input neutral.

The primary mitigation is the UPS topology itself: the online double-conversion UPS rectifies the input AC (including any harmonic noise from the shared bus bar) and regenerates a clean AC waveform on the output. This strips conducted noise before it reaches rack equipment. No additional filtering or isolation is required between SmartPack circuits and UPS input circuits.

Note: The amps are on dedicated circuits (not behind the UPS) and share the panel neutral bus bar with the SmartPack circuits. Their only protection from conducted dimmer noise is their internal power supply filtering. In practice, Class D amp switch-mode power supplies have adequate input filtering, but if audible noise is detected on amp circuits during commissioning, the source should be investigated.

Ground boundary crossings

Several signal paths cross between UPS-powered and building-powered equipment. The equipment grounding conductor is continuous (the UPS does not break it), but devices on opposite sides of the UPS power path have different noise environments on their power conductors, and ground potential differences between circuits can cause hum or signal degradation.

DMX cable shield grounding: Grounded at one end only (Paradigm ACP / transmitter end) per ANSI E1.11. The Paradigm ACP’s ground reference depends on its enclosure power source (TBD – ERn or DIN rail PSU) and the SmartPacks are on building ground – grounding the shield at both ends would create a ground loop. DMX is differential (RS-485) with +/-7V common-mode tolerance, so the signal is unaffected as long as the shield is grounded at one end only.

M32R console ground loop: The M32R plugs into a convenience outlet (building ground) while the rack DL16 is on UPS ground. AES50 uses 100BASE-TX Ethernet physical layer with transformer-isolated magnetics at both ends (1500V isolation per IEEE 802.3), providing galvanic isolation of the data path regardless of ground potential differences. The cable shield (if STP cable is used) may carry ground loop current but cannot affect data integrity through the transformer isolation. If the AES50 cable runs alongside analog audio cables, maintain separation to avoid shield-current-induced coupling.

Wireless mic antenna grounding: Not applicable for the initial install — the ACT-727a receivers have detachable antennas on 50-ohm TNC connectors, but in the default configuration the antennas are physically attached to the receiver chassis (UPS ground via RLNK, no boundary crossing). If remote-mounted antennas are added later, the coax shield would bridge UPS ground to the antenna mounting point’s ground reference, and CEC/NEC 810 antenna grounding requirements would apply. Revisit if remote antennas are needed.

Safety & Code Compliance

Emergency and exit lighting is on a completely separate system, unrelated to this panel or the SmartPacks. No SmartPack fault or AMX preset can disable it. (Whether the existing emergency/exit lighting meets current Alberta Building Code requirements is an open question in the lighting plan.) The ETC Response 0-10V Gateway is UL 924 listed and has a contact closure input for emergency-level activation — if wired to the building’s emergency system, it can override all dimming and drive gymnasium fixtures to full output in an emergency. Whether the facility’s emergency system provides this signal, and whether it should be connected, is TBD.

AFCI protection is not required. AFCI is a residential requirement under the Canadian Electrical Code and does not apply to commercial/institutional buildings. It would also be impractical here – Class D amplifier inrush current and SmartPack dimmer waveforms would cause nuisance trips.

Arc flash labeling is required on the new panel. Simplified labeling is sufficient for a sub-panel of this size – the electrician applies a standard arc flash warning label. A full arc flash hazard analysis is not needed.

Emergency disconnect is not required for the AV/lighting system. Emergency disconnects are for commercial kitchen equipment, HVAC, and industrial machinery. The panel breakers serve as the disconnect for this equipment. No separate panic switch accessible outside the locked rack closet is needed.

Conduit & Future-Proofing

Rack closet interior runs use EMT (metal conduit) affixed to the wall. Fiber runs are armored and wall-affixed (see Networking Plan).

All wire runs should be in conduit wherever possible, including low-voltage runs such as speaker wiring. The gymnasium ceiling will remain open (exposed structure) after construction, so conduit is visible and should be routed cleanly. Conduit should be stubbed from the rack closet to speaker rough-in locations while walls and ceilings are open during construction.

A dedicated conduit stub-out to a scorer’s table location at floor level is not needed – a scoreboard cart would be self-contained with its own power and data, using a convenience outlet and network drop.

Motorized blackout shades are not needed for the gymnasium – there are no windows.

Ventilation fan conduit and breaker space are out of scope for this plan – ventilation is part of HVAC.

Permits & Inspection

An Alberta-licensed electrical contractor handles the permit and coordinates with the Safety Codes Officer as part of standard practice. The electrician pulls the permit.

The relocated kitchen SmartPack requires a fresh inspection as a new installation – it is being relocated to a new panel with all new wiring downstream, so the entire installation will be inspected as new work.

Stamped electrical drawings from a Professional Engineer registered in Alberta are unlikely to be required. In Alberta, a licensed electrical contractor can design and install a sub-panel and branch circuits without P.Eng involvement – stamped drawings are typically only required for larger commercial projects. The exact threshold at which APEGA requires P.Eng involvement is not prescriptive for all cases — a 200A service may or may not trigger it depending on the Safety Codes Officer’s interpretation. If the Safety Codes Officer flags it during the permit process, the electrician would engage a P.Eng at that point.

Open Questions

Panel & Service Entry

• Panel location in the room
• Is this a main breaker panel or a sub-panel with main lug only? What is the upstream feeder breaker size at the main distribution panel?
• Feed from main building service to this panel (wire size, conduit run, distance). Has a voltage drop calculation been performed for the feeder at full panel load?
• What is the main building service capacity, and does it have headroom for this new panel? The working estimate needs to be added to the building’s connected load calculation.
• What is the available fault current (AFC) at the main building panel, and does the new panel’s short-circuit current rating (SCCR) meet it?
• What size main breaker and bus rating? A 100A main in a 200A bus panel is different from a 200A main – the choice affects upstream feeder sizing.
• Is the upstream feeder breaker large enough to carry the full load including the future LED wall without being replaced?
• Does the panel location comply with CEC Rule 2-308 minimum working clearances (1.0m / 39.4“ depth for ≤150V-to-ground, or 1.2m / 47.2“ for 151-600V; 750mm / 30“ width; 2.0m / 6’7“ headroom)? Given SmartPacks are also wall-mounted in the same closet, do all three pieces of equipment simultaneously meet clearance requirements? (Closet dimensions are 86“ wide × 165“ deep × 105“ high — headroom clears 2.0m requirement; layout needs to confirm depth and width clearance zones in front of each piece.)

UPS & Rack Circuits

• What is the total VA load the UPS must carry? Most rack device wattages are still TBD – UPS cannot be specified until these are known.
• Where are the rack closet receptacles located? TBD – depends on whether the rack closet ceiling is kept or removed. If ceiling remains, L5-20 on the ceiling. If removed (open to gym structure above), L5-20 on the wall behind the rack.

LED Wall (Long-Term)

• LED wall power requirements (panel area, pixel pitch, brightness)
• What conduit size and quantity is needed for LED wall power and data? Routing path from rack closet to each candidate wall location?
• Should conductors be pulled into the LED wall conduit now, or left empty? If pulled now, what size accommodates the 1,000-5,000W range at that distance?
• How will open conduit stub-outs be sealed during the interim period to prevent water intrusion, pests, or combustion gas entry?
• Does the panel bus rating accommodate adding the LED wall load without upgrading the feeder from the main service?

Surge Protection

• Is a Type 2 surge protection device (SPD) warranted at the new panel? The online UPS already protects rack equipment downstream of it, but the amps and SmartPacks are on dedicated circuits without surge protection. Whether a panel-level SPD is needed depends on the building’s exposure to surges (lightning, utility switching, large motors) and whether a Type 1 SPD already exists at the main service entrance. Note: if the jurisdiction has adopted CEC 2024, SPDs may be mandatory at new panels — confirm with the electrician. Need to check with electrician.

Safety & Code Compliance

• Do lighting control scenes comply with minimum illuminance requirements for paths of egress under the Alberta Building Code? Is there a floor level enforced in AMX/DMX so a preset cannot go below code-required minimums?
• GFCI: the rack closet has an exterior wall – if insufficiently insulated, condensation could lead the Safety Codes Officer to classify it as a damp location, requiring GFCI on 15A/20A 125V receptacles. GFCI on a Class D amp circuit will nuisance-trip on inrush. Ask the electrician to confirm the classification during the permit process.
• Do the SmartPacks’ internal magnetic breakers (10A per channel) have adequate interrupting ratings for the available fault current at this panel? The electrician needs to calculate the AFC at the panel location and confirm the SmartPack’s SCCR meets it. Likely not an issue for a sub-panel on a moderate feeder run, but should be verified during the permit process. ETC does not publish the SCCR in their public documentation.

SmartPack Breaker Sizing

• Continuous load classification: Each SmartPack is on a 60A / 240V two-pole breaker. If event lighting is classified as a continuous load under CEC (operating at near-maximum for 3+ hours — e.g., a wedding reception), the 80% continuous derating rule (CEC Rule 8-104) would require the breaker to be derated to 48A continuous, or the breaker upsized to 80A to carry 60A continuously. Is event lighting expected to run at or near full SmartPack capacity for 3+ hours? If so, verify with the electrician whether the 60A breakers are adequate or need to be upsized.

Permits & Inspection

• What inspection stages are required (rough-in before walls close, final after fixtures)? The gymnasium ceiling is open (exposed structure) so ceiling conduit is accessible post-construction. Wall rough-in still needs inspection before closing. Confirm stages with the electrician.

Conduit & Future-Proofing

• What are the conduit paths from the panel/closet to: projector (ceiling), N1115-WP wall plate (back wall), LED wall stub-out, speaker locations, lighting fixture zones?
• How many convenience outlet locations are needed for events? No prescriptive commercial code requirement (unlike residential outlet spacing rules) – this is driven by use cases. Consider caterer/vendor setup areas (along walls, near kitchen), portable production table location, and avoiding extension cords across the gym floor during events.

South Gym Equipment Reference

Detailed specifications for all equipment, collected for future reference and design evaluation. See individual plan documents for how each piece fits into the system.

Peavey Pro-LITE 5.0 (x3)

• Role: Power amplifiers
• Topology: Class D, dual channel
• Rack height: 2U
• Dimensions: 3.5“ x 19“ x 17.25“ behind front panel + 0.6“ for handle (17.85“ total depth)
• Construction: 0.062“ thick aluminum
• Weight: 6.2 kg / 13.6 lb (net, without power cord)
• Cooling: 3 temperature-dependent variable-speed fans

Power output

(At 1% THD, both channels driven at 1 kHz)

Power consumption

Format: W (VA) — real power in watts, apparent power in volt-amperes. VA is the figure used for breaker/circuit sizing.

I/O

• Inputs: 2x combo XLR/1/4“ (20kΩ balanced, 10kΩ unbalanced)
• Input modes: Selectable as parallel, stereo, or bridged
• Input function: Selectable as full-range, sub, or through
• Line-level through outputs: 2x 1/4“ jacks providing paralleled output signals for patching to other amplifier channels (available on the two higher-powered models including the 5.0)
• Speaker outputs: 2x Speakon (discrete channel A and B)

Front panel

• Attenuation controls per channel
• LED indicators: active, DC fault, temperature, signal presence, ACL (Automatic Clip Limiting)

Protection circuits

• ACL is the protection most likely to engage during normal use. It activates on transient peaks when the load impedance drops below the amp’s rated minimum (2Ω), even if average power draw is low. This is why the 2Ω floor is a hard limit — the amp will technically still produce output below 2Ω, but ACL will clamp transients, degrading audio quality.
• Thermal protection is unlikely at stage monitor levels, where each speaker draws only a few watts. It would require sustained high-power operation into a low-impedance load with inadequate ventilation.
• DC fault protection is a safety circuit for component failure — it is not related to load impedance or signal level.

Notes

• Channels are NOT bridgeable on the 5.0 (bridging only available on the two lower-wattage models)
• The line-level through outputs allow daisy-chaining between amps that share the same signal, avoiding the need to split at the BLU-100 output. With three amps serving different roles (ceiling speakers, subwoofers, floor monitors), each amp likely needs its own BLU-100 output pair — through outputs are useful if any two amps share a feed
• Input parallel mode can drive both channels from a single input
• Input function “sub” mode could allow one amp to handle subs while another handles full-range

Source

• Pro-LITE 5.0 – Peavey Commercial Audio
• Pro-LITE Series Spec Sheet (PDF) (original)

Middle Atlantic ERK-4025

• Role: Floor-standing AV rack enclosure
• Rack spaces: 40U
• Construction: Fully welded, 16-gauge steel (tops, bottoms, sides); 1/8“ (11-gauge) laser-cut structural steel internal braces
• Rackrail: 11-gauge steel, 10-32 threaded, numbered rackspace increments, fully adjustable front-to-rear. Standard front pair; optional rear pair.
• Finish: Black textured powder coat

Dimensions

Load ratings

Included with ERK-4025

• Keylocked solid rear door (standard; omitted on -LRD variant)
• Solid side panels with vertical slotted vent pattern at top and bottom
• Removable split rear knockout panels (top and bottom) with 1/2“, 3/4“, 1“, and 1-1/2“ electrical knockouts
• Top plates include UHF/VHF BNC knockouts
• Grounding stud: 1/4-20 threaded (1 location); bonding studs: 10-32 threaded (3 locations)

AV-configured variant (ERK-4025-AV)

Ships with additional accessories pre-installed:

• ERK-4FT-285CFM integrated fan top (three 4-1/2“ fans, 285 CFM)
• Solid locking front door
• Rear door with bottom vent
• 3-1/4“ vertical lacer strip
• 6x horizontal lacer bars (4 straight, 2 offset)
• 12x 8“ Velcro cable management straps
• 2x PDT thin power strips (20A, 10-outlet each, corded) — for 35 & 40 space enclosures
• Leveling feet
• 100x 10-32 mounting screws
• Side panel vent blockers

Relevant accessories

Certifications

• UL Listed (US: UL 2416 NWIN; Canada: CSA C22.2 No. 60950-1)
• GREENGUARD Gold Certified (UL 2818)
• RoHS EU Directive 2002/95/EC and 2011/65/EU
• EIA/TIA Compliant
• Seismic Certified (with ERK-Z4): IBC 2006/2009/2012, ASCE 7-05/7-10, NFPA 5000; SDC D, Seismic Use Group III

Depth note

At 23-1/2“ usable depth between rails, verify fit for the deepest equipment: the Midas DL16 (24 rear XLR connectors + cable bend radius) and Peavey Pro-LITE 5.0 (rear Speakon connectors). If additional depth is needed, the ERK-40-F-EXT3 or ERK-40-R-EXT3 extender bays add 3“ of usable depth.

Source

• ERK Series Datasheet (PDF) (original)
• ERK-4025 — Legrand AV
• ERK-4025-AV — Legrand AV

Middle Atlantic RLNK-915R

• Role: Rack PDU, IP-controllable by AMX
• Rack height: 1U
• Outlets: 9 total (1 always-on + 8 individually controllable)

Reference Documents

• RLNK-915R Datasheet (PDF) (original)

Sources

• RLNK-915R — Legrand AV

Middle Atlantic PDS-1620R-NS (available, TBD if used)

• Role: Rack-mount power sequencer
• Status: Existing unit available; not yet assigned a role in the South Gym plan
• Rack height: 1U
• Dimensions: 19“ W x 1.75“ H x 4.5“ D
• Weight: 7.5 lbs (3.4 kg)

Outlets

Electrical

• Input: 20A, 120 VAC; NEMA 5-20P plug on 9 ft cord (14 AWG SignalSafe shielded)
• Protection: 2-stage surge suppression, EMI/RFI filtering
• Sequencing: 3-step local sequencing (not network-controlled). Power-on delays protect downstream equipment; no AMX integration.

Mounting

Multi-mount: standard 1U horizontal rack, or vertical (rack ears rotate 90°).

Comparison with RLNK-915R

The RLNK provides AMX-controlled per-outlet switching (essential for preset-driven power sequencing). The PDS provides more outlets with built-in surge protection and local sequencing, but no remote control. They could be used together — e.g., RLNK for AMX-controlled devices, PDS for always-on or locally-sequenced loads.

Source

• PDS-1620R-NS — Legrand AV

Middle Atlantic Vertical PDU (x2, available, TBD if used)

• Role: Vertical-mount power distribution
• Status: Two existing units available; model number TBD. Not yet assigned a role in the South Gym plan.
• Mount: Vertical (inside rack cabinet, bolts to rear rail or side channel — does not consume rack U space)

Vertical PDUs mount inside the rack frame alongside equipment rather than occupying a horizontal U position. Middle Atlantic makes several vertical PDU lines (e.g., PDT, PD series in vertical configurations). The specific model and outlet count will be confirmed when the units are identified.

BSS BLU-100 (x2)

• Role: Base audio DSP, AMX-controlled
• Rack height: 1U
• Dimensions: 1.75“ (1U) x 19“ x 9.0“ (45mm x 483mm x 229mm)
• Weight: 6.4 lbs / 2.9 kg
• Control: IP (HiQnet) or RS-232
• Note: Already deployed and operational in the atrium with IP control via HiQnet London Architect from the NX-4200. Selected for the South Gym to maintain consistency and proven integration.

Analog I/O

• Input gain: 0dB nominal, switchable up to +48dB in 6dB steps
• Phantom power: 48V nominal, selectable per input
• CMRR: >75dB at 1kHz
• EIN: <-128dBu typical (150Ω source)
• Frequency response: 20Hz–20kHz (+0.5dB/-1dB)
• THD: <0.01% (20Hz–20kHz, +10dBu output)
• Dynamic range: 108dB typical (22Hz–22kHz unweighted)
• Crosstalk: <-75dB
• A/D latency: 37/Fs (0.77ms @ 48kHz)
• D/A latency: 29/Fs (0.60ms @ 48kHz)

Control / GPIO

• Control inputs: 12 (0–4.5V, 2-wire or 3-wire mode)
• Logic outputs: 6 (0 or +5V, 440Ω, 10mA source / 60mA sink)
• Watchdog output: Phoenix/Combicon connector, opto-isolated, fails safe (open circuit on fault)

BLU Link (Digital Audio Bus)

• Connectors: 2x RJ45 (IN/OUT, daisy-chain with optional redundancy loop)
• Channels: 48 @ 48kHz (channels 1–48 of the 256-channel Soundweb London bus)
• Cable: Cat 5e, 100m/300ft between devices
• Max nodes: 60
• Latency: 11/Fs (0.23ms @ 48kHz)
• Pass-through latency: 4/Fs (0.08ms @ 48kHz)

Network & Control

• Control network: 1x RJ45 Ethernet, 100m/300ft max to switch
• RS-232: DB-9 serial port for external control
• HiQnet protocol: TCP and UDP on IANA port 3804
• Discovery: IP broadcast (not multicast) — IGMP snooping does not affect HiQnet discovery
• Third-party control: HiQnet London Architect generates control strings with AMX or Crestron formatting presets
• Configuration: HiQnet London Architect software

Front Panel LEDs

• Per input channel: Signal, Clip, 48V
• Per output channel: Signal, Clip
• Status: COM (communications), STAT (design status), ERR (error), PWR (power/locate)

Power

• Mains: 100–240V AC, 50/60Hz
• Consumption: <55VA
• Heat: <188 BTU/hr
• Operating temp: 0°C to 45°C

Maintenance Notes

• Contains mechanical fans with limited life expectancy. Annual inspection recommended for dust occlusion and excessive noise. Fan replacement recommended after 6–10 years. Environmental factors (elevated temperature, dust, smoke) can shorten fan life.

Reference Documents

• BLU-100 Datasheet (original)
• BLU-100 Installation Guide
• HiQnet Third Party Programmer’s Guide — protocol specification for IP/RS-232 control (91 pages, port 3804 TCP/UDP)

Sources

• BLU-100 — BSS Audio

Midas M32R

• Role: Live mixing for complex events
• Model: M32R (rack-format version of the M32)
• Form factor: 3U rack-mountable; mounted in a flight case cart
• Faders: 16 motorized 100mm faders, 6 layers (same 40 input channels / 25 mix buses as full-size M32)
• DSP: Same as M32 — 40 input channels, 25 mix buses, 8 DCA groups, 8 stereo FX engines (KLARK TEKNIK)
• Digital snake: 2x AES50 ports (A + B)
• Ethernet: 1x RJ45 for remote control app (on VLAN 21)
• Stage boxes: DL16 (rack-mounted) + DL16 (portable)

Flight Case Cart

The M32R sits in a flight case cart with removable sides and top. Below the M32R are two rack bays (~16U each, TBD exact size). The cart is rolled into position for complex events and stored when not in use.

Current cart contents (below the M32R) – all being retired except the MIPRO:

Reference Documents

• M32R Datasheet (PDF)

Midas DL16 (x2)

• Role: Stage box / analog I/O
• Rack-mounted unit: In AV rack. Receives source feeds (mics, N4321, LP10) from BLU-100 #2 analog outputs via BLU Link from #1 — not connected directly to MIPRO receivers (see audio plan). M32R return outputs feed BLU-100 #2 inputs (main L/R) and amp #3 directly (monitor mixes).
• Portable unit: Lives on stage for instruments. May be housed in a portable rack case for protection and storage (TBD if one is available).
• Rack height: 3U (rack-mounted unit)
• Connection: AES50 to M32R

Reference Documents

• DL16 Datasheet (PDF) (original)

MIPRO ACT-727a (x2)

• Role: Wireless microphone receivers (dual-channel each, 4 channels total)
• Quantity: 2 units. One currently in the main AV rack, one relocating from the M32R cart.
• Model: ACT-727a UHF Analog Wideband Dual-Channel True Diversity Receiver
• Rack height: 1U
• Dimensions: 420 x 44 x 219 mm (16.5“ x 1.73“ x 8.6“)
• Weight: ~2.1 kg (4.6 lb)
• Power: Built-in 100-240 VAC auto-switching, ~15W

RF

Audio Outputs

• Frequency response: 50 Hz - 18 kHz
• S/N ratio: >105 dB (A-weighted)
• THD: <0.5% at 1 kHz

Audio Level Notes

The outputs are line level, not mic level. Even the lowest setting (-6 dBV balanced) is well above mic level. Downstream devices (BLU-100, DL16, splitters) must accept line-level inputs. This resolves the open question in audio.md about receiver output level – passive mic splitters designed for mic-level signals are not suitable. Use line-level splitting (active buffer, or simply patch the XLR outputs to the appropriate line-level inputs on the BLU-100 and DL16).

Compatible Transmitters

Features

• ACT (Auto Channel Targeting): Receiver scans for clean frequencies, syncs transmitter via IR
• PiloTone + NoiseLock: Dual-circuit squelch eliminates noise during dropouts
• PC control: RJ-11 interface for MIPRO Wireless Console (RCS27) software
• Dante option: Factory-installed Dante digital audio networking interface available

Reference Documents

• ACT-7 Series Declaration of Conformity (PDF) — covers ACT-727/727B, not ACT-727a (original)

Sources

Note: The installed units are ACT-727a (confirmed from front panel labels). The sources below are for the ACT-727 (non-“a”). Some specs (particularly preset frequency group structure) may differ between models. An ACT-727a-specific manual or datasheet is needed to confirm.

• ACT-727 – MIPRO (not ACT-727a)
• ACT-727 – AVLEX (North American distributor) (not ACT-727a)

Arylic LP10

• Role: Network audio streamer for casual playback (warmups, youth events, background music)
• Streaming: AirPlay 2, Google Cast, Spotify Connect, Tidal Connect, DLNA, UPnP
• Wireless: Dual-band WiFi 802.11ac (2.4GHz / 5GHz), Bluetooth 5.2 (15m range)
• Network: 1x RJ45 Ethernet (10/100M)
• Audio output: 1x 3.5mm line out (1Vrms), 1x Toslink optical out (up to 24-bit/192kHz)
• Audio input: 1x 3.5mm line in
• USB: 1x Type-A (USB flash drive playback, 1024 tracks max), 1x Type-C (power / PC audio DAC)
• Power: 5V / 2A via USB-C (10W max)
• Dimensions: 108 x 72 x 26.6 mm
• Weight: ~500g
• Display: 0.91“ OLED
• Control: 4 touch buttons (mode, vol-, play/pause, vol+), IR remote, Go Control app (iOS/Android)
• Note: Line out feeds BLU-100 as an audio input. Network connection required for AirPlay 2, Google Cast, and Spotify Connect. Bluetooth available as a fallback when network is unavailable.

Reference Documents

• LP10 User Manual (original)

Sources

• LP10 – Arylic

ETC SmartPack (x2)

• Role: Lighting dimmers
• Channels: 12 per unit (24 total)
• Power per channel: 1200W
• Mount: Wall-mount
• Control: DMX512 (via ETC Paradigm ACP)
• Dimming type: Forward-phase (leading-edge)
• Location: One currently in kitchen (to be relocated), one available. Both to be mounted together.

Reference Documents

• SmartPack Datasheet (PDF) – note: this links to the portable/rack-mount variant (SL series); the wall-mount variant datasheet has not been sourced yet

Sources

• ETC SmartPack

ETC Paradigm ACP

• Role: Lighting controller for both gymnasium (0-10V) and event (DMX512) layers
• Model: Paradigm Architectural Control Processor (Mk1 or Mk2 – see generation notes below)
• Mount: TBD – either ERn wall-mount control enclosure or DIN rail enclosure (see enclosure options below)
• Dimensions: Processor module is a single-width card (enclosure-mount) or compact DIN rail unit (P-ACP-D)
• Power: ERn: powered from enclosure bus (own AC input). DIN rail P-ACP-D: external 24V DC PSU.

Generation Notes

Either generation supports the South Gym’s requirements (PSAP, DMX512A output, sACN output for 0-10V via Response Gateway, button stations, NV presets, LightDesigner). The South Gym uses ~24 DMX channels + a handful of 0-10V zones – well under the Mk1’s 1,024-channel limit.

Enclosure compatibility: The Mk1 and Mk2 use different backplane connectors. A Mk1 P-ACP cannot mount in a Mk2-era ERn, and vice versa. If the building has an existing Mk1-era ERn with spare capacity, use a Mk1 P-ACP. If purchasing a new ERn, it ships with Mk2 backplane and requires a Mk2 P-ACP-E. Do not mix generations within a single enclosure. The P-ACP-D (DIN rail) is Mk2 only.

Enclosure Options (TBD)

The Paradigm ACP is not rack-mounted. The enclosure choice is an open question:

Either option works for the South Gym. The DIN rail approach is cheaper but forces Mk2. If reusing an existing Mk1 ACP from facility inventory, the ERn is required.

Outputs

RS-232 Protocol (PSAP – Paradigm Station Access Protocol)

• Format: CR-terminated ASCII commands (0x0d).
• Protocol name: PSAP (Paradigm Station Access Protocol)
• Connection: EXB-COM2 port 1 in the South Gym rack

PSAP Command Reference

Full PSAP command syntax and parameters are documented in the ETC Paradigm configuration manual (see Reference Documents below).

AMX Integration Notes

• Preset-based control: AMX recalls Paradigm presets via PSAP. Each preset can control both 0-10V zones (gymnasium) and DMX channels (event SmartPacks) simultaneously.
• Zone override: After recalling a preset, AMX can override individual zones via PSAP for fine-tuning (e.g., adjusting a single dimming zone without changing the full preset).
• Poll-based watchdog: The Paradigm does not have a built-in heartbeat like the DFD 2322DMX. AMX must periodically send PSAP status queries and flag a fault if no response is received.
• Priority system: The Paradigm assigns priority levels to each input source. Button stations are configured at a higher priority than the RS-232 serial input, so physical wall switches always take precedence over AMX commands. When the button station input releases (e.g., an “off” press or timeout), serial control resumes.
• Single serial link: One RS-232 connection on EXB-COM2 port 1 controls both lighting layers – no second serial device or port is needed.

Fallback Behavior

• AMX down: Presets stored in the Paradigm’s non-volatile memory. Gymnasium presets are recalled from button stations (independent of AMX and network). Event presets can be recalled from button stations if configured.
• Power loss: The Paradigm restores its last state from non-volatile memory on power-up. No preset data is lost.
• Alternative: If the Paradigm’s DMX output proves unsuitable for SmartPacks, the DFD 2322DMX can be reinstated as an RS-232-to-DMX bridge on EXB-COM2 port 2, restoring the original two-serial-link architecture.

Reference Documents

• Paradigm ACP Datasheet (PDF) (original)
• ETC Paradigm ACP configuration manual (2018 Handover binder – see Lighting/2018 Handover)
• ETC LightDesigner software documentation (used for Paradigm configuration, preset programming, and button station assignment)

Sources

• ETC Paradigm Architectural Control Processor
• Mk1 vs Mk2 Product Comparison (ETC Support)
• Paradigm Hardware Compatibility (LightDesigner versions)

ETC Response 0-10V Gateway (RSN-LV-R3)

• Role: Converts sACN from the Paradigm ACP to 0-10V control signals for gymnasium fixtures
• Model: RSN-LV-R3 (current production)
• Part number: 4267A1202
• Outputs: 24 channels of 0-10V sink control
• Sink current: 100 mA max per output (sufficient for ~50+ typical LED drivers per channel at <2 mA each)
• Input: sACN (streaming ACN) over Ethernet, or DMX512 (5-pin XLR). Dual-input with configurable precedence.
• Mount: DIN rail (standard 35mm)
• Dimensions: 4.13“ x 9.41“ x 1.22“ (105 x 239 x 31 mm)
• Weight: 1.38 lb (0.62 kg)
• Power: 12-24 VDC via external PSU (ETC HDR-60-24, catalog number PS537, ~$80)
• Configuration: ETC Concert software over Ethernet, or onboard 4-button interface
• Features: UL 924 listed for emergency luminaires, contact closure input for emergency-level activation, configurable dimming curves per output

Notes

• The gateway is standalone – it does not need a DRd, ERn, or any other ETC enclosure. It mounts on any standard DIN rail.
• Can be mounted near the Paradigm ACP (rack closet) or near the gymnasium fixtures to keep 0-10V cable runs short. Only needs Ethernet and 24V DC power at its location.
• The 0-10V outputs use the sink protocol (ANSI/IES TM-23): the LED driver provides the 10V reference, and the gateway sinks current to dim. This is compatible with virtually all 0-10V LED drivers.
• The R3 revision (Nov 2023) adds per-output electrical isolation, preventing leakage voltage from one driver from affecting others.
• ETC also offers optional DIN rail enclosures (DIN14, DIN28) if a NEMA-rated box is needed.

Reference Documents

• Response Gateway Datasheet (PDF) (original)

Sources

• ETC Response 0-10V Gateway

DFD 2322DMX

Status: alternative/spare – not in the primary signal chain. The Paradigm ACP now drives the SmartPacks directly via its built-in DMX512A output. The 2322DMX is retained as a documented fallback if the Paradigm’s DMX output proves unsuitable. See ETC Paradigm ACP.

• Role: RS-232 to DMX512 bridge (alternative – see status note above)
• Control: ASCII commands via RS-232 from AMX
• Output: DMX512, ESD-protected EIA-485 (LT1785), opto-isolated, bidirectional
• Presets: 20 onboard presets with individual fade times (default 2 seconds per preset)
• DMX connectors: Gold-plated male/female 5-pin XLR (Neutrik D-1 series)
• Dimensions: 8.25“ x 1.7“ x 6.5“
• Weight: 3.3 lb
• Power: 100–120VAC 50/60Hz, 12W (208–240V optional)
• Indicators: Power LED (red), DMX signal LED (green), MIMIC LED (green)
• Address switches: 3-digit thumbwheel for DMX start address / channel of interest
• Note: Must be in transmit mode (M0) for AMX to control lighting. Receive mode (M1) is for recording presets from an external DMX console. Mode is stored in non-volatile memory.

RS-232 Protocol

• Format: Plain ASCII commands terminated with <CR> (0x0d). Case-insensitive. Spaces optional.
• Response: OK on success, Error on failure.
• Connectors: Front panel DB-9M or rear panel 3-pin female XLR (only one active at a time).
• Buffer: 256-byte circular receive buffer.

Command Reference

• Channel lists support + and - for ranges: C 10 – 15 + 25 + 500 @ 255 T 7<CR>
• @ and L are interchangeable for setting levels.
• After a preset is recalled, individual channels can be adjusted live. If any channel is changed, ? P reports preset 0 (modified state).

AMX Integration Notes

• Heartbeat for watchdog: Enable H 1 so the 2322DMX sends . every second. AMX can monitor for this character to detect a dead serial link — this answers the monitoring question raised in control.md and lighting.md.
• Preset recall is the primary AMX command: P ##<CR> with optional fade override. Simple to implement in NetLinx.
• Query support: AMX can poll ? P to confirm which preset is active after a recall.
• No IP option: RS-232 only — requires a serial path from the NX-4200 to the South Gym (see control.md open questions).

Reference Documents

• 2322DMX Manual V2 (Software V2.0, serial 223148+) (original) — full RS-232 command protocol
• 2322DMX Manual V1 (original)
• 2322DMX Datasheet (original)

Sources

• DFD 2322DMX

NovaStar VX4S (x2)

• Role: LED wall video processor
• Rack height: 1U (45mm)
• Weight: ~2.55 kg / 5.6 lb
• Power: 25W max, AC 100-240V 50/60Hz
• Heat: ~85 BTU/h (estimated from 25W)
• Note: Each VX4S drives one display only. Do not combine two to drive a single wall (sync issues).

Inputs

• Max input resolution: 1920x1200 @ 60Hz (1080p60 confirmed)

LED Panel Outputs

• 4x RJ45 Gigabit Ethernet (LED data to panels)
• Max loading capacity: 2.3-2.6 million pixels (varies by firmware)
• Max output dimensions: 3840 px wide, 2560 px tall

Loop/Monitor Outputs

• DVI Single Link loop (1), DVI Single Link out (1), VGA out (1), 3G-SDI loop (1)

Control

• Software: NovaStar LCT / Smart LCT (Windows) via LAN port or USB
• Network: 1x RJ45 LAN port for IP control
• Front panel: Rotary knob + button with LCD for basic source switching
• USB: 2x Type-A, 2x Type-B (software connection, firmware)

Processing

• Built-in scaler (Nova G4 engine)
• Seamless switching with fade transitions
• Picture-in-picture, image mosaic/crop
• Point-by-point brightness and color correction (via NovaStar calibration software)

Environment

• Operating temp: -20°C to +70°C

Variants

• VX4S-N: Adds Neutrik etherCON connectors on LED outputs (confirm which variant is in inventory)

Reference Documents

• VX4S Datasheet (PDF) (original)
• VX4S Input Switching Protocol (original) – TCP port 5200, hex command protocol for input switching and control

Sources

• VX4S – NovaStar
• VX4S – Elation Lighting

AMX NX-4200 NetLinx Integrated Controller

• Role: Facility control processor (controls South Gym remotely over IP via fiber uplink)
• Part number: FG2106-04
• Rack height: 1U
• Dimensions: 1.766“ x 17“ x 9.18“ (4.49 x 43.18 x 23.32 cm)
• Weight: 7.6 lb (3.45 kg)
• Location: IT room (not in South Gym rack)

Processing

• Processor: 1600 MIPS
• RAM: 1 GB
• NVRAM: 1 MB
• Storage: 8 GB SDHC
• Programming: NetLinx, RPM, Java
• MTBF: 100,000 hours

Serial Ports (8 total)

• All ports: configurable data bits, stop bits, parity
• Note: These serial ports are physically on the NX-4200 in the IT room, not in the South Gym. To reach serial-only devices in the South Gym (e.g., the ETC Paradigm ACP), an AMX EXB-COM2 ICSLan serial expansion module is placed in the South Gym rack on VLAN 21. The NX-4200 reaches it over the network. See control.md.

Other I/O

• IR/Serial outputs: 8 (ports 11–18)
• Relays: 8 (port 21, channels 1–8), 24VDC or 28VAC @ 1A each
• Digital I/O: 8 (port 22, channels 1–8)
• AXLink: 2 interfaces

Networking (Dual NIC)

• ICSLan PoE budget: 70W total, 33W max per port
• ICSLan PoE support: 4x 802.3af (up to 15.4W each) or 2x 802.3at (up to 25.5W each)
• ICSLan expansion modules: EXB-COM2 (serial), EXB-REL8 (relay), EXB-IRS4 (IR/serial), EXB-I/O8 (digital I/O), EXB-MP1 (mic preamp)

Power

• Input: 100–240VAC 50/60Hz or 12VDC (redundant — both can be connected simultaneously)
• Consumption: 8.4W (active)
• Heat: 28.7 BTU/h

Environment

• Operating temp: 0°C to 50°C
• Humidity: 5–85% RH (non-condensing)

Security

• FIPS 140-2, 802.1X, X.509 certificates, TLS/SSH, LDAP authentication

Default Network Settings

• LAN IP: 192.168.1.3 (static)
• ICSLan IP: 198.18.0.1
• ICSP port: 1319
• HTTP port: 80
• HTTPS port: 443
• WebConsole: Browser-based configuration interface
• NTP: Supported for time synchronization

Capacity Notes for South Gym

The South Gym requires the NX-4200 to manage the following IP connections (via LAN port through the fiber uplink):

The NX-4200’s 1600 MIPS processor, 1 GB RAM, and 8 GB storage are substantial. Current utilization of the existing facility programming load should be assessed before adding the South Gym modules.

Reference Documents

• NX-4200 Datasheet (original)
• NX-Series Hardware Reference Manual (original)
• Central Controllers Comparison Chart (original)
• NX-4200 Quick Start Guide (original)

Sources

• NX-4200 – AMX

AMX MXD-1000-P Modero X 10.1“ Touch Panel

• Role: Operator control interface for AMX presets, source selection, volume, and status monitoring
• Part number: FG5968-07 (portrait), FG5968-13 (landscape)
• Display: 10.1“ capacitive multi-touch, edge-to-edge glass, IPS (wide viewing angles)
• Orientation: Available in portrait (MXD-1000-P) or landscape (MXD-1000-L)
• Dimensions (portrait): 9 7/8“ x 6 11/16“ x 2 5/8“ (252 x 171 x 67 mm)
• Dimensions (landscape): 6 11/16“ x 9 7/8“ x 2 5/8“ (171 x 252 x 67 mm)
• Weight: 2.0 lb (0.91 kg)
• Mounting: Wall-mount via plastic backbox (included). Supports drywall 0.50“–0.875“ (1.27–2.22 cm) thickness. Optional rough-in box (FG039-17) and rack mount kit (MXA-RMK-10, FG5969-62).
• Features: NFC sensor, Sleep button, Bluetooth, USB

Power

• Source: PoE (802.3af) — requires PoE injector or PoE switch
• Full-on: 12.95W max
• Standby: 5.8W
• Shutdown: 1W
• Heat: 44.2 BTU/h (on), 19.8 BTU/h (standby)

Network & Connection

• Network: 1x RJ45 Ethernet
• Connection modes to NX-4200:
  • URL: Panel connects to master’s IP address via TCP
  • Listen: Panel listens for master’s communication signals
  • Auto: Panel and master on same subnet, auto-discovery
• ICSP port: 1319 (default)
• Default panel password: 1988

Environment

• Operating temp: 0°C to 40°C
• Storage temp: -20°C to 60°C
• Humidity (operating): 20–85% RH
• Humidity (storage): 5–85% RH

Variants

• MXD-1000-P-NC (FG5968-25) / MXD-1000-L-NC (FG5968-26): No camera, microphone, or NFC. Otherwise identical.

Programming

• Programmed via NetLinx Studio and TPDesign4
• For detailed settings, panel configuration, and programming, refer to the Modero X Series Programming Guide

Reference Documents

• MXD-1000 Quick Start Guide (original)
• Modero X Series Instruction Manual (original)

Sources

• MXD-1000 – AMX

AMX EXB-COM2 ICSLan Serial Interface

• Role: Remote RS-232 serial control of the ETC Paradigm ACP from the NX-4200 over the network
• Part number: FG2100-22
• Dimensions: 1“ x 4 3/8“ x 5 1/8“ (2.5 x 11.1 x 13.0 cm), 1/4 RU width
• Weight: 1 lb (454 g)
• Power: PoE — no local power supply needed. 1.9W draw.
• Network: 1x RJ-45 ICSLan Ethernet (10/100)
• Location: South Gym rack, VLAN 21 (Control)
• Status: Discontinued (replacement: CE-COM2). Functional units available.

Serial Ports (2)

• Both ports support XON/XOFF and CTS/RTS flow control

Status LEDs

• 1 Green: connection and power status
• 1 Green: Ethernet link status and activity
• 2 Red (1 per port): serial transmit (TX) activity
• 2 Yellow (1 per port): serial receive (RX) activity

Notes

• Employs Native NetLinx Technology — programming is identical to any device port on the NX-4200
• Port 1 (RS-232/422/485) connects to the ETC Paradigm ACP (PSAP protocol, controls both lighting layers). Port 2 (RS-232) is a spare.
• Compact form factor can be mounted behind equipment or on a rack shelf

Reference Documents

• EXB-COM2 Datasheet (original)

Sources

• EXB-COM2 – AMX

AMX EXB-REL8 ICSLan Relay Interface

• Role: Remote relay control from the NX-4200 over the network (candidate for motorized screen dry contact control)
• Part number: FG2100-20
• Dimensions: 1“ x 4 3/8“ x 5 1/8“ (2.5 x 11.1 x 13.0 cm), 1 RU height
• Weight: 1.02 lb (463 g)
• Enclosure: Steel, black powder coated finish
• Power: PoE — no local power supply needed. Typical: 1.9W, max: 3.4W.
• Network: 1x RJ-45 ICSLan Ethernet (10/100)
• Status: Discontinued (replacement: CE-REL8). Functional units available.

Relays

• Channels: 8, independently controlled, isolated, normally open
• Rating: 1A @ 24VAC or 28VDC (resistive)
• Connectors: 2x 8-pin 3.5mm captive-screw terminals

Status LEDs

• 1 Green: connection and power status
• 1 Green: Ethernet link status and activity
• 8 Red (1 per relay): relay activity

Mounting Options

• AVB-VSTYLE-SURFACE-MNT: V-Style Module Surface Mount
• AVB-VSTYLE-RMK-1U: V-Style Module tray (1U)
• AVB-VSTYLE-POLE-MNT: V-Style Module Pole Mount

Notes

• Employs Native NetLinx Technology — programming is identical to relay ports on the NX-4200
• Could resolve the open question about the motorized screen dry contact relay device (see control.md and video.md)
• Same form factor and PoE powering as the EXB-COM2

Reference Documents

• EXB-REL8 Architectural Specification (original)

Sources

• EXB-REL8 – AMX

Global Cache IP2CC-P iTach IP to Contact Closure (PoE)

• Role: Candidate for motorized screen dry contact control (alternative to AMX EXB-REL8)
• Model: IP2CC-P (PoE variant of IP2CC)
• Dimensions: 3.25“ x 2.25“ x 1.25“ (L x W x H)
• Weight: 3.25 oz (6 oz with power supply)
• Enclosure: Aluminum extrusion case, rubber end caps, plastic face plates

Contact Closure Relays

• Channels: 3 integrated contact closure relays
• Type: Normally open (N.O.), isolated
• Rating: 0.5A @ 24V AC/DC
• Protection: Transient voltage suppression
• Connectors: Pluggable screw terminals

Power

• PoE: 802.3af (on -P models)
• Alternative: 5–16V DC @ 300mA (wall adapter included), or USB power cable

Network

• Connector: RJ45
• Speed: 10/100 Mbits Ethernet
• Protocol: TCP, DHCP, HTTP
• Setup: Integrated web server, configurable via TCP/IP commands
• Simultaneous connections: Up to 8
• Discovery: iHelp setup utility for network discovery

Notes

• Open-systems, non-proprietary TCP/IP control — works with any control system, not just AMX
• Flash upgradeable firmware
• Compared to the EXB-REL8: smaller (fits anywhere), cheaper, PoE powered, but only 3 relays (vs. 8) at lower rating (0.5A vs. 1A), and not native NetLinx (requires separate TCP/IP programming in AMX)
• For the motorized screen, only 2 relays are needed (up/down), so 3 channels is sufficient
• Certifications: FCC Part 15 Class B, C-Tick, CE, RoHS

Reference Documents

• iTach IP Family Datasheet (original)

Sources

• Global Cache iTach

AMX NMX-ENC-N1115-WP Wall-Plate Encoder

• Role: Wired presenter input (wall-plate SVSi encoder)
• Form factor: 2-gang US back box (wall, lectern, or floor box)
• Compression: MPC (Minimal Proprietary Compression), visually lossless
• Latency: 10 ms at 60 fps (combined encode + decode); scaling adds ~17 ms
• Max resolution: 1920x1200 @ 60Hz
• Color space: 4:2:2
• Video inputs: HDMI, HD-15 VGA; DVI-D and Dual-Mode DisplayPort (DP++) via passive adapter
• Audio inputs: Embedded on HDMI, or analog stereo
• Audio: 8ch PCM, stereo 2-channel; 16-bit ADC at 32/44.1/48 kHz
• Network: 1x RJ45 (GbE, auto-sensing)
• Power: PoE (802.3af Class 3 / 802.3at Type 1)
• Heat: ~26 BTU/h
• Dimensions: 4.06“ x 3.5“ x 2.25“ (10.31 x 8.84 x 5.72 cm)
• Weight: 0.75 lb (0.34 kg)
• Operating temp: 0°C to 40°C
• Variants: NMX-ENC-N1115-WP-WH (white), NMX-ENC-N1115-WP-BL (black)
• Note: Audio from this unit is known to be flaky. Use ClickShare or a separate audio path when audio quality matters.

Reference Documents

• N1115-WP Datasheet (original)
• N1115-WP Quick Start Guide (original)

Sources

• NMX-ENC-N1115-WP – AMX

AMX NMX-ATC-N4321 Audio Transceiver

• Role: Audio over IP transceiver (send and receive)
• Audio I/O: 2-channel balanced/unbalanced (Phoenix connectors)
• Network: 2x RJ45 (GbE, auto-sensing), PoE powered
• Power: PoE or +12V DC external
• Form factor: Card variant (NMX-ATC-N4321-C) fits the NMX-ACC-N9206 cage
• Control: TCP/IP via port 50002
• Note: Used for receiving audio-only streams from around the building (e.g., auditorium overflow audio). Discontinued but functional units available.

Reference Documents

• N4321 Datasheet (original)
• N4321 Direct Control API (original) – TCP port 50002
• N4321 Quick Start Guide (original)
• N4000 Series Instruction Manual (original)

Sources

• NMX-ATC-N4321 – AMX

AMX SVSi System

• Role: Video encoding/decoding over IP
• Chassis: NMX-ACC-N9206 2U rack-mount cage (holds up to 6 N-Series cards)
• Rack height: 2U

Encoder: NMX-ENC-N1122A

• Max resolution: 1920x1200 @ 60Hz (covers 1080p60)
• Compression: MPC (Minimal Proprietary Compression), visually lossless
• Latency: 10 ms unscaled, ~17 ms with scaling (at 60 fps)
• Video inputs: HDMI (Type A), HD-15 (VGA), DVI-D via adapter
• Audio inputs: 8ch PCM via HDMI, stereo analog (Phoenix connector)
• Audio: AES67 support
• Control: RS-232 passthrough (Phoenix, 1200-115200 baud), IR output, onboard event-triggered TCP/UDP
• Network: 2x RJ45 (GbE), PoE powered
• Power: PoE or +12V DC external
• Heat: ~44 BTU/h
• Note: NMX-ENC-N1122A-C is the card-format variant for the NMX-ACC-N9206 cage – functionally identical, draws power from the cage. TBD whether the encoder goes in the cage or is standalone.

Decoder: NMX-DEC-N1222A

• Max resolution: 1920x1200 @ 60Hz output (covers 1080p60)
• Compression: MPC (Minimal Proprietary Compression)
• Latency: 10 ms unscaled, ~17 ms with scaling (at 60 fps)
• Video output: HDMI (Type A), DVI-D via adapter (with HDCP)
• Audio output: 8ch PCM via HDMI, stereo analog balanced/unbalanced (Phoenix)
• Audio: AES67 support
• Control: RS-232 passthrough (Phoenix, 1200-115200 baud), IR output, onboard event-triggered TCP/UDP
• Network: 2x RJ45 (GbE), PoE (802.3at Class 4)
• Power: PoE or +12V DC external
• Heat: ~44 BTU/h
• Location: At the projector (ceiling-mounted). Provides RS-232 control passthrough to the projector.

Reference Documents

Local copies in resources/. Original URLs noted for reference.

• N-Series Minimum Network Requirements (original)
• N-Series Stream Compatibility (original)
• N-Series Video Wall/Crop Limitations (original)
• N1000/N2000 API Command List (original) – includes sendser for RS-232 passthrough control

Sources

• NMX-ENC-N1122A – AMX
• NMX-DEC-N1222A – AMX
• NMX-ENC-N1122A-C – AMX

Da-Lite Cosmopolitan Electrol (34468)

• Role: Motorized projection screen
• Model: Cosmopolitan Electrol, model 34468
• Viewing area: 87“ x 139“ (221 x 353 cm)
• Diagonal: 164“ (417 cm)
• Aspect ratio: 16:10
• Surface: Matte White (1.0 gain, 60° half-gain angle)
• Surface properties: Flame retardant, mildew resistant fiberglass; seamless; standard black backing retains projected brightness
• Borders: Standard black masking, 2“ black drop at top
• Mount: Wall or ceiling

Dimensions

• Case construction: 21-gauge steel, powder coated white (black available on request)
• Case end caps: Heavy duty, no exposed roller pins; form mounting brackets for wall or ceiling installation
• Shipping weight: 85 lbs (38.6 kg)

Motor

• Power: 120V AC, 60 Hz, 2.4A max (three-wire with ground)
• Type: In-the-roller mount, quick-reversal, oiled for life
• Protection: Automatic thermal overload cut-out, electric brake to prevent coasting
• Limit switches: Pre-set, adjustable; automatically stop surface in up and down positions
• Roller: Rigid metal

Control

The screen has built-in LVC (Low Voltage Control) – confirmed by the low-voltage cable running to the Decora-style three-position wall switch (up / stop / down). With LVC, the wall switch sends a low-voltage signal to the motor module rather than switching line voltage directly. AMX can trigger raise/lower by closing a dry contact on the LVC input via an EXB-REL8 or IP2CC-P relay.

Available control options for this screen (for reference):

Notes

• The control method determines how AMX interfaces with the screen. If equipped with LVC or Video Projector Interface, AMX can trigger raise/lower via a low-voltage signal or dry contact relay (see EXB-REL8 and IP2CC-P entries). If equipped with an SCB-100, AMX can control via RS-232 or Ethernet (via NET-100). The standard 120V switch requires a relay to automate.
• Extra drop (additional black material above or below the viewing area) is available to lower the picture area beyond the standard 2“ black drop. Maximum total surface height including picture area is 13’.
• All Da-Lite surfaces are GREENGUARD GOLD Certified.
• UL Listed.

Open Questions

• What is the installed drop distance from the case to the bottom of the viewing area? Is there extra drop configured beyond the standard 2“ at top?

Reference Documents

• Cosmopolitan Electrol Spec Sheet (PDF) (original)

Sources

• Cosmopolitan Electrol – Da-Lite / Legrand AV

Peerless-AV PRG-UNV Precision Gear Projector Mount

• Role: Ceiling-mounted projector bracket (supports the existing projector)
• Model: PRG-UNV (with Spider Universal Adapter Plate)
• Weight capacity: 50 lb (22 kg)
• Dimensions: 8.5“ x 3.82“ x 8.5“ (216 x 97 x 216 mm)
• Material: Aluminum
• Finish: Black
• Pipe connection: 1.5“ NPT (connects to AEC0406 extension column below)

Adjustment

• Adjustment method: Precision gear mechanism; two knobs adjustable with Phillips screwdriver or tool-less by extending the knobs by hand
• Spider adapter plate: Extends up to 17.63“ (448 mm) to fit most projector mounting patterns
• Security: Pre-installed security screws prevent tampering with adjustment knobs
• Quick release: Projector can be removed from the mount for servicing without disturbing alignment

Reference Documents

• PRG-UNV Spec Sheet (PDF) (original)
• PRG-UNV Installation Guide (PDF) (original)

Sources

• PRG-UNV – Peerless-AV

Peerless-AV AEC0406 Adjustable Extension Column

• Role: Ceiling drop column connecting the PRG-UNV projector mount to the ceiling plate
• Model: AEC0406
• Adjustment range: 4’–6’ (48“–72“ / 1.22–1.83 m) in 1“ (25 mm) increments
• Load capacity: 900 lb (408 kg)
• Pipe: 1.5“ NPT (1-1/2“–11.5 NPT), schedule 40 steel, threaded both ends
• Material: Steel
• Finish: Black
• Weight: ~7.6 lb (shipping)
• Cable management: Internal cable routing through the column

Notes

• The column attaches to a ceiling plate (sold separately) at the top and the PRG-UNV projector mount at the bottom via the 1.5“ NPT threaded connection.
• Notched adjustment design enables easy height changes and position locking without special tools.
• 900 lb load capacity is vastly over-spec for the projector application – the PRG-UNV’s 50 lb limit is the constraining factor.

Reference Documents

• AEC Series Spec Sheet (PDF) (original)

Sources

• AEC0406 – Peerless-AV

Chief PG3A Projector Guard

• Role: Protective security cage around the ceiling-mounted projector (impact and theft protection in a gymnasium environment)
• Model: PG3A (X-Large)
• Overall dimensions: 14.33“ x 25.24“ x 25.51“ (364 x 641 x 648 mm) H x W x D
• Max projector size: 10.75“ x 25.0“ x 25.0“ (273 x 635 x 635 mm) H x W x D
• Weight: 44 lb (19.96 kg)
• Construction: Locked steel cage
• Finish: Black (also available in white)

Features

• Hinged door for projector access without removing the cage
• Adjustable front opening accommodates different lens positions
• Accommodates roll, pitch, and yaw adjustments through the cage
• Locks with security screws; optional padlock attachment points

Compatibility Note

The PG3A is designed for Chief’s own RPA and RPM series projector mounts. The South Gym projector uses a Peerless-AV PRG-UNV mount. The cage is currently installed and functional with this configuration. When using RPM series mounts, the manufacturer notes the maximum projector height is reduced by 1.00“.

Reference Documents

• PG3A Installation Manual (PDF) (original)

Sources

• PG3A – Chief / Legrand AV

Netgear M4250-40G8XF-PoE+ (GSM4248PX)

• Role: AV network switch (South Gym)
• Model: GSM4248PX / M4250-40G8XF-PoE+
• Rack height: 1U
• Ports: 40x 1GbE copper (RJ45) + 8x SFP+ (10G)
• PoE: 802.3at (PoE+), up to 30W per port, 960W total PoE budget
• Firmware: 13.0.5.10 (matching core switch)
• Management: Web UI (HTTP 49151 / HTTPS 49152), CLI (SSH), SNMP (SHA512 auth), Engage Controller for AV profile management
• AV features: IGMP snooping, multicast filtering, QoS class-of-service mappings (PTP, audio, video), AV-optimized Engage profiles
• Note: Facility standard — same model as the core switch (GSM4248PX). Also deployed in auditorium, atrium, and digital signage (those locations use the smaller GSM4230PX / M4250-26G4XF-PoE+). 48-port selected for the South Gym because 19 ports are allocated at full build-out, leaving minimal headroom on a 24-port model. The “X” suffix (SFP+/10G uplink) is required across all facility switches for SVSi bandwidth — non-X models lack 10G uplink support and are not suitable.

Reference Documents

• M4250 Series Datasheet (PDF) (original)

Sources

• GSM4248PX — Netgear
• Existing facility config: Networking/Core Switch/startup-config.cfg

MediaMatrix Xframe88 + MM8802 (existing, being removed)

• Role: Current DSP (being replaced by BLU-100s)
• Rack height: 1U (Xframe88) + 1U (MM8802)
• I/O: 4 mic inputs, 4 line inputs, 8 line outputs
• DSP: 4x Motorola 56002 @ 80 MHz
• Expandable: Up to 24x24 I/O

Rolls RPL108 (existing, likely not used)

• Role: Power conditioner and rack light
• Status: Existing unit available; discontinued by Rolls. Likely not used — the RLNK and PDS-1620R-NS cover power distribution, and the ERK-4025 closet has its own lighting.
• Rack height: 1U
• Outlets: 8x switched NEMA 5-15R (rear panel), all controlled by front-panel master switch
• Power: 120 VAC, 60 Hz, 15A max (1,800W total)
• Protection: MOV surge/transient suppression (<1 ns response), RFI/EMI line filtering
• Circuit protection: 15A breaker
• Rack lights: 2x gooseneck light modules (front panel), independent on/off switch and dimmer; 7W night-light bulbs (user-replaceable)

Source

• RPL108 — Rolls Corporation (discontinued)

Tascam CD-200iL (existing, likely not used)

• Role: CD player / iPod dock
• Status: Existing unit available; discontinued by Tascam. Likely not used — the LP10 covers background music playback via streaming.
• Rack height: 2U
• Dimensions: 481 mm W x 94.5 mm H x 298 mm D (18.9“ x 3.7“ x 11.7“)
• Weight: 5.2 kg (11.5 lb)
• Power: 100–240 VAC, 50/60 Hz, 15W

Supported media

I/O

Audio specs

Notes

• Analog output is unbalanced RCA only — no balanced XLR. Would need a DI or RCA-to-balanced adapter to connect to the BLU-100’s balanced Phoenix inputs.
• 10-second shock buffer for vibration resistance in gym environment.
• Pitch control ±14%.

Reference Documents

• CD-200iL Owner’s Manual (PDF) (original)

Source

• CD-200iL — Tascam (discontinued)

Extron IN1608 (existing, likely not used)

• Role: 8-input scaling presentation switcher with DTP extension
• Status: Existing unit available; specific variant (standard / SA / MA / xi / IPCP) TBD. Likely not used — the AMX/SVSi system handles video switching and the BLU-100s handle audio routing.
• Rack height: 1U (standard, xi); 2U (SA, MA variants with built-in amplifier)
• Dimensions: 1.75“ H x 17.5“ W x 9.5“ D (standard)
• Weight: ~5.0 lbs (standard xi); ~7.9 lbs (IPCP models)
• Power: 100–240 VAC, 50/60 Hz; 45W full load (standard), 76W (IPCP)
• Max output resolution: 1920x1200 / 1080p (no 4K support)

Video I/O

Audio I/O

Control

Scaling

• Hardware scaler, 30-bit processing
• Motion-adaptive deinterlacing, 3:2 / 2:2 pulldown detection
• EDID Minder, Key Minder (HDCP), SpeedSwitch (xi models)
• Auto-Image input detection and sizing

Reference Documents

• IN1608 Series Datasheet (PDF) (original)

Source

• IN1608 — Extron
• IN1608 xi — Extron

Epson EB-L730U (existing)

• Role: Projector — ceiling-mounted at 205“ AFF
• Status: Existing, installed. Discontinued November 2025; replaced by PowerLite L790U.
• Model: EB-L730U (international) / PowerLite L730U (North America), V11HA25020
• Display technology: 3LCD, 0.67“ panels
• Native resolution: WUXGA (1920 x 1200), 16:10
• 4K input: Accepts 4K/60Hz 4:2:0
• Brightness: 7,000 lumens (white and color, ISO 21118)
• Contrast ratio: 2,500,000:1 (dynamic)
• Color processing: 10-bit, 1.07 billion colors

Note: The model is referred to as “EB-730U” elsewhere in the plan documents (as read from the unit). Epson’s catalog lists this as the EB-L730U (the “L” denotes laser). Verify on the nameplate — if the installed unit is genuinely an “EB-730U” without the “L”, it may be a different or region-specific variant.

Light source

Lens and optics

Connections

Network control

• Wired LAN: 100BASE-TX/10BASE-T
• Wireless: Built-in 802.11a/b/g/n/ac (2.4 GHz + 5 GHz)
• Protocols: PJLink Class 2, SNMP, web browser, Crestron Connected, AMX Device Discovery, Extron XTP, Control4
• Miracast: Built-in

Power

Physical

Reference Documents

• Epson EB-L730U Spec Sheet (PDF) (original)
• Epson EB-L735U Series User’s Guide (PDF) (original)
• Epson EB-L735U Series Specification (PDF)
• ESC/VP21 Command Reference

Sources

• PowerLite L730U — Epson US
• EB-L730U — ProjectorCentral

Danley Sound Labs SH69 (x2, existing)

• Role: Main ceiling speakers — hung at 197.5“ AFF
• Status: Existing, installed. Currently in production.
• Type: Synergy Horn, full-range, passive, 3-way loudspeaker
• Technology: Danley patented Synergy Horn — multiple drivers of different bandwidths coupled into a single horn, functioning as a unified point source

Acoustic performance

Electrical

Drivers

All drivers mounted within the single Synergy Horn body for true point-source behavior.

Connectors and wiring

DSP recommendation

• 50 Hz high-pass filter at 24 dB/octave Butterworth

Physical

Variants

Reference Documents

• SH69 Spec Sheet (PDF) (original)
• SH69 Owner’s Manual (PDF) (original)

Sources

• SH69 — Danley Sound Labs
• BRKT-69 U-Bracket — Danley Sound Labs

Sylvania LED15PAR38DIM830FL40 (existing pot light lamps)

• Role: Lamps in existing recessed pot lights (10 total — 4 south, 6 north)
• Status: Existing, installed. In production.
• Manufacturer: LEDVANCE / Sylvania
• Product line: ULTRA LED Glass PAR Lamps
• Catalog number: 41060
• Full ordering code: LED15PAR38DIM830FL4013YGLWRP

Model number decode

LED15PAR38DIM830FL4013YGLWRP: LED / 15W / PAR38 / Dimmable / 3000K CRI 80+ / 40° Flood / 13-year rated life / Glass lens / Warm / Retail Pack. The “13YGLW” suffix on the physical lamp encodes rated life, glass construction, and series — it is not a date code.

Specifications

Related models

Sources

• Sylvania 41060 — Lighting Supply
• LEDVANCE Dimmer Compatibility List

Philips F32T8/TL941/ALTO (existing fluorescent lamp)

• Role: One of the fluorescent lamp types installed in the 114 ceiling fixtures
• Status: Discontinued. No direct successor.
• Order code: 479626
• Technology: ALTO II (low mercury), 900-series phosphors (high CRI)

Specifications

The “941” designation: 9 = 90+ CRI, 41 = 4100K. Trades lumen output (2,600 vs ~2,850 for 800-series) for higher color rendering.

Reference Documents

• Philips F32T8/TL941/ALTO Spec Sheet (PDF) (original)

Sources

• F32T8/TL941/ALTO — Signify/Philips

Sylvania Octron Vivid Value FO32/V41/ECO (existing fluorescent lamp)

• Role: One of the fluorescent lamp types installed in the 114 ceiling fixtures
• Status: In production
• Catalog number: 22438
• Technology: Rare-earth phosphors, Vivid Value series (90 CRI at reduced cost)

Specifications

The “V41” designation: V = Vivid (90 CRI), 41 = 4100K. Lower lumen output than 800-series (2,450 vs ~2,850) in exchange for CRI 90.

Sources

• Sylvania 22438 — 1000Bulbs.com

Philips F32T8/TL850 PLUS/ALTO HV (existing fluorescent lamp)

• Role: One of the fluorescent lamp types installed in the 114 ceiling fixtures
• Status: Transitioning — being replaced by F32T8/TL950/ALTO (CRI 90 upgrade)
• Order code: 281816
• Technology: ALTO II (low mercury), PLUS phosphors (high efficiency, extended life), 800-series

Specifications

The “850” designation: 8 = 80+ CRI, 50 = 5000K. Highest lumen output of the three installed lamp types.

Reference Documents

• Philips F32T8/TL850 PLUS/ALTO Spec Sheet (PDF) (original)

Sources

• F32T8/TL850 PLUS/ALTO HV — Signify/Philips

Fluorescent lamp comparison (existing inventory)

The three lamp types installed across the 114 fixtures have varying performance:

The mixed CCT (4100K and 5000K) and varying lumen output means the current lighting is not uniform in color or brightness across the room. This will be resolved when the fluorescents are replaced with new LED fixtures at a single consistent CCT.

Draper LumaLectric (existing, will likely be removed)

• Role: Second motorized projection screen — centered on the long wall (102’ side)
• Status: Discontinued (confirmed on Draper’s discontinued products page). Model number unknown — likely a long-discontinued entry-level motorized screen.
• Type: Motorized (electric) projection screen, non-tensioned, free-hanging
• Lineage: Motorized version of the Draper Luma manual screen line
• Case: Pentagonal steel case (likely 5-7/8“ H x 5-1/4“ D based on Luma line)
• Motor: Tubular motor-in-roller (inferred from Draper standard configuration)
• Voltage: 110–120V, 60 Hz (standard North American Draper configuration)
• Surface: Likely Matte White fiberglass (standard for the Luma line)
• Current Draper equivalent: Targa series

No spec sheet or documentation available — the product was discontinued long enough ago that no online records remain beyond its listing on Draper’s discontinued products page.

Sources

• Discontinued Products — Draper
• Targa (current equivalent) — Draper

Robomatic MPB200-1A (existing, will not be retained)

• Role: Gymnasium scoreboard
• Status: Will be removed during renovation. Manufacturer appears to be defunct — no online presence found.
• Electrical: 120VAC, 60Hz, 5A (600W max draw)
• Display type: Likely incandescent bulb segments (consistent with 600W power draw — LED scoreboards draw far less)
• Era: Likely 1980s–1990s based on power draw and lack of online records
• Model decode (inferred): MP = Multi-Purpose, B = Basketball, 200 = series, -1A = revision

No spec sheet, manual, or manufacturer website exists online. “Robomatic” does not appear in any scoreboard context on the internet, suggesting a small regional manufacturer that predates the widespread internet era.

Sources