Town Hall Auditorium, Dimapur.
- Dimapur, Nagaland
- Handover 2024
- Development Authority of Nagaland (DAN)
- 374-seat civic auditorium (276 general + 98 VIP)
· The brief
What we were
asked to deliver.
A 374-seat civic auditorium engineered for council meetings, official functions and community performance — delivered as a single integrated build covering JBL SRX line-array pro audio, an indoor P2.5 LED wall, DMX stage lighting, stage furnishing, acoustic treatment and audience seating.
· Engagement note
The kind of building
this actually is.
A government brief is rarely a brief about technology. It is a brief about the operating reality the building will inhabit on its busiest day — the rota, the audit, the inspection, the regulator, the family, the night shift. We engineer to that day, not to a brochure. The systems below were designed against the worst-case load and tuned to feel effortless against it for everyday use.
On a project of this type, the discipline is in the seams: where the cause-and-effect from one panel has to read cleanly into another, where the cabling pathway is shared by three trades, where the commissioning calendar needs to clear before the operator’s calendar opens. We hold all of that under one contract — design through commissioning — so that when something is asked of the building three years from now, there is one accountable hand to ask.
The scope below is the measurable output. The unwritten output is a documentation pack the operator can hand to a successor without losing a year of institutional knowledge.
· What we delivered
10 disciplines,
one contract.
A single integrated stack — design, procurement, installation, commissioning and AMC by a single accountable contractor. Each line carries its own drawing pack, cause-and-effect and commissioning sign-off.
- JBL SRX line-array pro audio with Crown / JBL amplification
- BSS BLU 50 DSP and Soundcraft Si Expression digital mixer
- AKG and Shure microphone complement
- Indoor 23 ft × 13 ft P2.5 LED wall with WyreStorm + Aten HDMI distribution
- Panasonic display panels for confidence and reference
- DMX-controlled DLMC stage lighting + main hall dimmable lighting
- Stage drapery, traveller curtains and back-drop options
- Acoustic wall and ceiling treatment matched to civic-speech intelligibility
- 374 audience chairs (276 general + 98 VIP) installed with row / seat labelling and spare chairs handed over
- Equipment racks and UPS for the head-end
· Systems integrated
The named systems,
not the trade-list.
Each system was engineered as a coordinated layer — its own controllers, commissioning report and AMC inclusion — and stitched into the cause-and-effect that runs across all of them.
- 10× JBL SRX910LA active line-array modules + 4× JBL SRX928S subwoofers, JBL stage monitors and wall speakers
- Crown and JBL amplification across audience and stage zones
- BSS BLU 50 DSP processor
- Soundcraft Si Expression digital mixer with Mini Stage Box
- AKG gooseneck, wireless and vocal microphones + Shure SM57 instrument microphones, active DI boxes
- Indoor 23 ft × 13 ft P2.5 LED wall (active LED centre cluster)
- WyreStorm and Aten HDMI switching and extension; Panasonic display panels
- DLMC stage lighting fixtures on DMX-512 control + main hall dimmable lighting
- Acoustic wall and ceiling treatment to RT60 and STI targets
- Stage drapery — main, traveller, back-drop options
- 374 audience chairs labelled by row and seat (276 general + 98 VIP)
- UPS-backed head-end with equipment racks
· Engineering challenges solved
The hard problems,
not the press release.
Below is what actually had to be engineered through — written by the team that solved each one, not by the team that wrote the brochure.
- 01
Hitting STI 0.57+ at every seat in a multi-mode hall — civic-speech, official-function and community-performance — without locking the room into one acoustic identity. Panel-and-cloud treatment was specified rather than a fluid scheme: at 400 seats it is the right tool, and STI 0.61 was achieved as a result.
- 02
Designing the LED centre cluster's brightness and colour temperature against the auditorium's mixed-use lighting — civic functions need a cooler register, community performance prefers a warmer one. Two preset profiles were programmed against measured ambient illuminance.
- 03
Compact line-array placement that delivers even coverage across 400 seats without dominating the architectural sightline — the hang geometry was modelled in EASE before specification, not adjusted on site.
- 04
Tuning the DSP feedback-suppression for live council meetings, where multiple lavalier microphones operate simultaneously — the DSP profile was set against the actual lectern and presidium microphone count, not a generic civic preset.
· Integration summary
How the disciplines
were stitched.
Below 800 seats, panel-and-cloud acoustic treatment is the right tool — properly specified, with calculated coverage and material discrimination. The Town Hall was engineered to that thesis: panel coverage tuned per audience zone, cloud diffusion at the rear, line-array DSP shading set against the measured RT60, and the LED cluster brightness profile set against the actual illuminance the room sees during civic and community use. The result is STI 0.61 at every seat — civic-speech standard hit on the first commissioning attempt.
· Operational impact
What changed for the
day-two team.
A handover is not a milestone — it is the day the operations team starts running the building without us. These are the changes they inherit.
- STI 0.61 mean and 0.57 minimum measured across all 400 seats — speech intelligibility delivered for council meetings and official functions to civic-grade standard.
- Two-mode preset on the LED cluster — civic and community — operable by the auditorium staff without DSP knowledge.
- Single coordinated commissioning report — audio, video, lighting, drapery and seating signed off together against a measured test plan.
· Standards & compliance context
The codes the work
was held to.
Each standard is the framework an inspector or auditor would check our work against. Deliverables sized to satisfy each one in writing, not in conversation.
- ISO 3382-1 — room acoustic measurement
- AES-15id — speech-intelligibility sound system design
- IS 8758 / NBC 2016 — assembly-occupancy fire and life-safety
- DMX-512 — entertainment lighting control
· Brand stack
Specified for the project,
not the brochure.
Each brand was chosen for the project’s specific requirements; no partnership volume influenced the recommendation. Click any brand to visit the manufacturer’s official site.
· Documentation handed over
What our client received
on day one.
As-built architectural-coordination drawings
Single-line diagrams + panel schedules
Rack and patch labelling schedules
Controller configuration files (offline baseline)
Calibration reports for AV and life-safety
Cause-and-effect matrix (signed by AHJ)
Software-licence registers
AMC enrolment with response SLA
Operations manual in plain English
· Why it mattered
A building is not commissioned on the day the contractor leaves. It is commissioned on the first ordinary morning the operators run it without us in the room.
We design every project with that morning in mind — the panel labelled in the operator’s own language, the documentation legible to a successor we will never meet, the AMC programme already calendared, the spares already in our Lachit Nagar office. A government engagement of this scale is judged not on handover day but in year three. That is the standard the brief was held to.
/ On site
A frame from the engagement.
Photographs from the working installation. Permitted by the client; published with redactions where the brief required.
· Systems used on this project
Read the systems,
in depth.
Each linked service page goes deeper than this case study — capabilities, integration logic, failure scenarios, FAQs and the codes the work is engineered to.
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· Where this work sits
Dimapur,
in our practice.
We hold a GST registration in Dimapur for inter-state work — design, engineering, procurement, project management and AMC are all controlled from our Guwahati office.
Read our Dimapur practice· Reference walkthrough
With the host’s permission,
we’ll arrange a site visit.
Brochures and CGI tours teach you nothing about how a system actually feels. For serious enquiries we facilitate site visits to active deployments — typically within a week of request, subject to the host’s availability.