Multipurpose Cultural Hall, Namsai.
The shape of the deployment.
Structured engineering tagging — deployment archetype, infrastructure complexity, operational class and the named protocols the integration runs on.
- Infrastructure complexity
- Single Room
- Operational class
- Civic Cultural
- Deployment archetypes
- civic auditoriumline array pamixed mode av
- Protocols referenced
- DMX-512 (entertainment lighting)dbx DriveRack 260 DSPHDMI over CAT6 / HDBaseT extensionTrailing-edge architectural dimming (touch / iPad control)
What we were asked to deliver.
A government multipurpose cultural hall in Namsai engineered for stage performance, public address and civic functions — delivered under sub-contract as a coordinated stage-lighting, professional-audio, projection and architectural-lighting fit-out, with a full theatrical rig, acoustic wall treatment and a conditioned, UPS-backed head-end.
The hall reads as one environment because the lighting, sound and projection backbones were coordinated on the drawing, not stitched on site. The theatrical rig — profile, fresnel, plano-convex, barndoor and PAR fixtures plus RGBW LED PAR wash — shares one DMX-512 bus through a programmable digital console, while a three-phase floor-mounted electronic dimmer rack and a cross-connect patch panel carry the high-wattage halogen load without contending with the architectural circuits. Those architectural circuits — dimmable 3000 K downlights and cove lighting — sit on their own touch- and iPad-controlled trailing-edge dimmer system, so a stage cue never disturbs the house scenes. The line-array-class mains, subwoofers, surrounds and stage monitors run under a single dbx DriveRack 260 profile and a Soundcraft mixer, holding a wide microphone complement inside one gain structure; a 6000-lumen WXGA long-throw projector (specified in place of the tendered video wall) and 55-inch displays feed from a Kramer-class HDMI matrix and HDBaseT distribution. A servo voltage stabiliser and an online sine-wave UPS hold the head-end rack through utility transients — the whole package delivered under sub-contract and handed over in 2018 with department training and a year of operational manpower.
3 frames from the engagement.
Photographs from the completed installation. Commercial documents and BOQ details remain private.
Signal & system architecture.
Systems integrated: 6 disciplines, one contract.
Pro audio
Video wall
Microphone array
Signal distribution
Lighting automation
Power continuity
- ↳Powering and dimming a halogen-heavy theatrical rig alongside RGBW LED fixtures from one control surface — the load was distributed across a three-phase floor-mounted electronic dimmer rack with a cross-connect patch panel so high-wattage halogen channels and DMX LED channels share a single programmable console without unbalancing a phase.
- ↳Keeping the DMX-512 stage rig and the architectural cove / downlight scheme independent so a performance cue never disturbs the house scenes — the dimmable 3000 K architectural circuits run on a separate touch- / iPad-controlled trailing-edge dimmer system rather than off the stage console.
- ↳Replacing the tendered 2×2 video wall with a long-throw projector mid-project — a 6000-lumen WXGA projector with a long-distance lens was specified to cover the deep throw from the rear of the hall to the proscenium, sized against the hall's stage-lighting and ambient levels rather than a catalogue default.
- ↳Delivering even PA coverage across a wide cultural-hall floor without hot-spotting the front rows — the dual-15-inch mains, subwoofers, surrounds and stage monitors were set under a single dbx DriveRack 260 profile so speech and music sit inside one gain structure.
- ·One coordinated AV, stage-lighting and architectural-lighting handover — a single accountable scope rather than separate trades meeting at the wall.
- ·House and stage lighting operable from independent controls — event crews drive the architectural scenes from a touch panel / iPad while the stage console runs the performance rig.
- ·A conditioned, UPS-backed head-end — the hall's electronics ride through utility sag and outages without a hard shutdown.
- ·Department staff trained and one year of operational manpower folded into the engagement at handover.
- IS 694:1990 — PVC-insulated cables for working voltages up to 1100 V
- IS 9537 (Part III) — conduits for electrical wiring
- DMX-512 — entertainment lighting control protocol
- AES-15id — sound-system design for speech intelligibility
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