Conference audio fails in one of two ways: people cannot be heard, or the room echoes so badly nobody can follow. Both come from the same cause — too few microphones and untreated acoustics. This page shows you how to size a system and the six mistakes that ruin a boardroom.
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Formal chambers use one unit per seat — councils, boards, courts. Shared units suit working meetings.
The headline product is rarely more than half the installed cost. These are the parts that get left out of budgets.
Priority microphone with the ability to mute delegates. One per system.
Roughly one per two seats. Push-to-talk or voice-activated.
Powers and manages the microphone chain, sets speaking limits.
Distributed along the room. Two at one end produces a hot spot and a dead end.
PTZ or fixed, for video conferencing and recording.
Minutes and audit. Often a governance requirement for boards and committees.
Multi-language for international meetings.
Panels or curtains. In a reverberant room this is part of the system, not decoration.
Where a visible unit per seat is unacceptable aesthetically.
The honest trade-offs.
| Consideration | Wired Delegate | Wireless Delegate | Ceiling Array | Boundary / Table |
|---|---|---|---|---|
| Audio reliability | Highest | Good | Moderate | Good |
| Battery management | None | Daily charging | None | None |
| Table cabling | Visible | None | None | Some |
| Speaker identification | Yes | Yes | Limited | Limited |
| Reconfigurable layout | Poor | Excellent | Excellent | Good |
| Best for | Fixed boardrooms | Multi-purpose rooms | Aesthetic-critical | Small meeting rooms |
| Relative cost | Lowest | Higher | Higher | Moderate |
Assess the acoustics before the equipment. Bare tile, glass and concrete create echo that defeats any microphone system. This is the first thing to look at, not the last.
Table cable routes for wired systems. Cable channels through or under the table, decided before the table is built or drilled.
Power at the control position. Central unit, amplifier and any recording device all need power and ventilation.
Speaker distribution along the room. Two speakers at one end of a 32-foot room means a loud end and an inaudible one.
Air conditioning noise. A boardroom AC running at full is often louder than a soft speaker. Measure it — it sets the floor for intelligibility.
Camera sight lines for video conferencing. The camera must see faces, not the backs of heads. This constrains where the chairman sits.
Wired systems have essentially no running cost. No batteries, no charging, no consumables. This is the strongest financial argument for wired in a fixed room.
Wireless units need daily charging and battery replacement every two to three years. The charging routine is an operational habit more than a cost — and it is the thing that fails.
Microphone capsules degrade with handling and humidity. On heavily used units budget replacement every few years.
Acoustic treatment is one-time and it does more for intelligibility per taka than any equipment upgrade in a reverberant room.
The cost nobody accounts for: a system that sounds bad and therefore goes unused. Boards revert to shouting across the table, and the installation becomes furniture. In a hard-surfaced room, treatment is not optional — and it is cheaper than the equipment it rescues.
Every one has cost a real project real money.
Sharing one unit between four people means it is never in front of the speaker. Everyone leans in and raises their voice.
Do this: One microphone per two seats. It is the single most reliable rule in conference audio.
In a bare-tile, glass-walled room echo defeats any system, and adding power makes it worse.
Do this: Assess surfaces first. Treatment is part of the system in a reverberant room, not an extra.
You pay a premium for flexibility you will not use, and inherit a daily charging routine that will be forgotten.
Do this: Wired for fixed rooms. Wireless for training and multi-purpose spaces.
A long room gets a loud end and an inaudible end, and the far end stops participating.
Do this: Distribute speakers along the room length, not beside the display.
Boardroom AC at full is often louder than a soft speaker. It sets the floor for what is audible.
Do this: Measure ambient noise with the AC running. It may change the speaker specification.
Boards and committees frequently need an audio record, and it is far cheaper specified upfront than retrofitted.
Do this: Decide at design stage whether minutes or governance require recording.
Specifications, models and pricing sit on the product pages.
Rules we apply on every installation. Share this with your installer.
Councils and boards speak on the record.
Glass and tile make any microphone system sound worse.
Feedback starts when a speaker points at a live microphone.
Wireless units run on batteries.
Wired systems need a cable path under the table.
Chairman units can mute all delegates — enable it.
Delegate count, room construction and whether meetings leave the room. Three questions, then the equipment follows.
Wireless moves the problem from cabling to battery logistics and RF management. In a building full of Wi-Fi, wired is more reliable.
Priority and mute control is what keeps a large meeting workable. It is one unit and it changes the whole experience.
Remote participants tolerate a mediocre picture. They leave the call over bad audio. Spend on the audio path.
A glass-walled boardroom with a hard table will sound poor regardless of microphone quality. Soft surfaces matter more than another microphone.
Feedback. Plan the speaker positions relative to the table at design time.
Conference systems get abandoned more often through confusion than through failure.
Delegate count, whether the room can be cabled, and whether meetings are recorded or streamed.
Wired delegate and chairman units. No batteries to manage and no RF congestion in a building full of Wi-Fi.
Every product above is one DigiMark Solution imports, stocks and warrants. Pricing is quotation-based and depends on quantity and configuration — request a quotation or ask on WhatsApp.
What to state so quotations are comparable.
| Sector | What to specify | Typical scale | The clause bidders exploit |
|---|---|---|---|
| Government / council chamber | Delegate count; chairman priority; recording and retention; interpretation channels where required | 20–200 seats | Recording retention and who owns the audio must be stated in the tender |
| Corporate boardroom | Seat count; hybrid platform compatibility; single-button start | 8–30 seats | Name the conferencing platform. Compatibility is a real constraint, not a formality |
| University / lecture | Presenter plus audience microphones; capture for later viewing; room reinforcement | 50–500 seats | State whether lectures are recorded — it changes the entire audio design |
| Hotel / banquet | Flexible layout; wireless; rapid reconfiguration between events | Varies by room | Specify how fast a room must be reconfigured between bookings |
| Training room | Presenter mobility; simple operation by non-technical staff | 10–40 seats | Ease of operation outranks specification here |
Free site survey across Dhaka and Chattogram. Our engineers confirm the design before anything is quoted.