How to Design AV Systems for Every Room Type: From Huddle Rooms to Executive Boardrooms

Conference room AV is not one-size-fits-all. A solution perfectly calibrated for a four-person huddle space will fail in a twelve-person conference room. A boardroom system specified for an auditorium will be overcomplicated and expensive. Conversely, under-specifying a boardroom leaves an organisation's most important client-facing space looking unimpressive and performing poorly at critical moments.

Good AV design starts with understanding the room: its dimensions, its occupancy, its primary purpose, and its relationship to the rest of the building's AV ecosystem. This guide walks through every major room typology used in Bangladesh corporate environments, provides the technical formulas professionals use to size displays and audio coverage, and specifies the minimum viable system for each category.

The Room Typology Framework

Professional AV designers classify conference spaces into five primary categories based on occupancy and function. Each category has distinct display, audio, video, and control requirements.

The occupancy numbers matter because they drive every other design decision: display size, audio coverage area, camera field of view, and control system complexity all scale with the number of people the room must serve.

Display Sizing Formula: The Foundation of Every AV Design

The single most important number in display specification is viewing distance — the distance from the furthest viewer to the display. The industry-standard formula for minimum display diagonal is:

Minimum Display Diagonal (inches) = Maximum Viewing Distance (feet) ÷ 3.3

This formula, derived from AVIXA's DISCAS (Display Image Size for 2D Content Advisory Standard), ensures that text and graphics are legible to the person sitting furthest from the screen. For a small conference room with a maximum viewing distance of 4.5 metres (approximately 15 feet), the minimum display diagonal is 15 ÷ 3.3 = 4.5 inches per foot × 3.3 = 45 inches. In practice, you would specify 55 or 65 inches to provide comfortable legibility with room to spare.

For high-detail content (engineering drawings, financial data tables, small-font presentations), use a stricter formula: Minimum Diagonal = Maximum Viewing Distance (feet) ÷ 2.5. This tightens the spec appropriately for data-intensive use cases.

Huddle Rooms (2–4 Persons)

Display and Camera

A huddle room with maximum viewing distance of 2.5–3 metres needs a minimum 55-inch display. In practice, 55 inches is the correct specification: large enough for the space, small enough to wall-mount without dominating a small room. A 65-inch panel in a 10 m² room can feel overwhelming and creates off-axis viewing problems for the people sitting closest.

Camera requirements in a huddle room are straightforward. An all-in-one video bar — a single unit containing camera, microphone, and speaker — is the appropriate choice. Products like the Logitech MeetUp (120° field of view), Poly Studio, or the Jabra PanaCast (180° FOV) mount below or above the display and provide adequate coverage for 2–4 people seated in a tight semicircle.

The camera field of view (FOV) for a huddle room should be 90–120°. Wider angles distort faces of people seated at the edges; narrower angles miss participants. Most all-in-one bars default to approximately 90° with AI-assisted framing that crops to active speakers.

Audio

All-in-one bars provide adequate audio for 2–4 person huddle spaces. The built-in beamforming microphone array in quality bars (Logitech, Poly, Jabra) covers a 2.5–3 metre pickup radius, which is sufficient for the room's depth.

Separate ceiling microphones are unnecessary and add cost and complexity in rooms this small. The acoustic energy in a 10 m² room with 4 people is high enough that a quality all-in-one bar handles it without assistance.

Control

Simplicity is the design principle for huddle rooms. A single USB-C or HDMI cable connects a laptop; a QR code on the table initiates a room-based meeting; touch on the display interface or a companion app starts the call. Dedicated touch panel controllers are over-specified and unnecessary for this room type.

The goal is zero learning curve: any employee should be able to walk in and start a meeting within 30 seconds without reading any instructions.

Small Conference Rooms (6–10 Persons)

Display and Camera

With a typical maximum viewing distance of 4–5 metres in this room type, the minimum display diagonal calculates to approximately 50–60 inches. The practical specification is 65–75 inches — the additional size is justified because presentations will include details that benefit from extra visual real estate, and the cost difference between 65-inch and 75-inch commercial panels is modest.

Consider dual displays if the room regularly splits between two activities: video conferencing on one display, shared content on the other. This configuration eliminates the constant switch between call participant view and presentation content that disrupts meeting flow.

Camera requirements expand in this room type. A fixed-lens bar camera with 90° FOV will not capture participants at the far ends of a 5-metre table. Specify a PTZ (pan-tilt-zoom) camera capable of at least 90° horizontal FOV for wide shots, with the ability to zoom to individual speakers. Alternatively, an AI-tracking bar camera with 120° FOV and auto-framing — from manufacturers like Huddly or Logitech — handles this space well without PTZ mechanical complexity.

Audio

A 6–10 person conference table requires more audio coverage than an all-in-one bar provides. The correct approach is a ceiling microphone array positioned above the centre of the table, providing omnidirectional coverage across the seating area.

Shure's MXA310 table array or MXA710 linear array placed on the ceiling works well for rooms in this category. Audio DSP (Digital Signal Processor) processing — echo cancellation, noise suppression, and automatic gain control — is essential and typically integrated into the microphone or a companion DSP unit.

Loudspeaker coverage should come from ceiling-mounted speakers rather than a sound bar. Two ceiling speakers positioned on either side of the table axis provide even coverage for all participants. Yamaha, TOA, and Bosch all offer commercial ceiling speakers well-suited to this application in the BDT 5,000–15,000 per unit range.

Control

A 7-inch touch panel mounted at the table end provides sufficient control for this room type. Crestron TSW-770, AMX modero, or an iPad-based solution running Crestron Flex or Zoom Rooms controller software all work well. One-touch room control — meeting start, volume, display input, lighting scene, blinds — is the appropriate scope of functionality.

Large Conference Rooms (12–20 Persons)

Display and Camera

With seating depths potentially reaching 6–8 metres and table widths of 2.5–3 metres, large conference rooms present the most complex display geometry. The minimum display diagonal at 8 metres viewing distance calculates to approximately 97 inches — which means a single 98-inch commercial display or dual 75-inch displays in a side-by-side configuration.

Dual displays solve several problems simultaneously: participants can see video conferencing feeds and shared content simultaneously without switching, content can be mirrored or extended as needed, and viewers on either side of the room each have a display at a reasonable viewing angle.

Camera specification for large conference rooms requires a PTZ camera with at least 70° horizontal FOV for wide shots, optical zoom capability of 10× or greater, and AI auto-tracking for speaker following. A secondary camera positioned to show the whiteboard or presentation screen gives remote participants full situational awareness of the room.

Audio

Large rooms require distributed ceiling microphone systems. The standard design approach places ceiling microphone elements at intervals not exceeding 2.4 metres across the full seating area. Shure's MXA920 ceiling array or the Sennheiser TeamConnect Ceiling 2 provides coverage for tables up to approximately 9 metres long from a single unit (the TC Ceiling 2 covers 9 × 9 metres). For larger tables, multiple units or a distributed beamforming system is required.

Audio DSP becomes critical at this scale. A dedicated DSP unit — Biamp Tesira, QSC Core, or BSS London — manages echo cancellation, mixing, and routing for the more complex audio signal chain. These units also handle acoustic echo cancellation when multiple microphones are active simultaneously.

Loudspeaker coverage should be distributed — 4–6 ceiling speakers spaced to achieve even SPL (Sound Pressure Level) coverage across the seating area, targeting 65–70 dB(A) for voice reproduction.

Control

A 10-inch touch panel at the head of the table is the minimum specification for this room type. A wireless touch panel (Crestron TSW-1070 or equivalent) allows the meeting moderator to manage the room from any position. Integration with room booking systems — Microsoft 365 or Google Calendar — enables automatic AV startup and shutdown based on calendar events.

Executive Boardrooms

The Boardroom Standard

Executive boardrooms represent the highest-stakes AV environment in any organisation. Board members, senior executives, and external directors use these rooms for decisions that matter. A technical failure in a board meeting is not an inconvenience — it is a governance failure that reflects on the organisation's operational competence.

The boardroom AV design philosophy prioritises reliability above all else. This means redundant components where feasible, regular maintenance schedules, and dedicated room AV support staff (or a managed service agreement) to ensure the system performs correctly every time.

Display Configuration

Boardrooms typically use one of three display configurations:

Single large format display (86–110 inch): Appropriate for rectangular rooms up to approximately 9 metres long where all participants have sightlines to a single screen end.

Dual large format displays: Used in longer rooms or for simultaneous content + video conferencing display.

Video wall (2×2 or 3×2 LCD/LED panels): Used in prestige boardrooms where screen size, visual impact, and simultaneous multi-source display are priorities.

Audio — The Boardroom Difference

Boardroom audio requires the highest quality components. Distributed ceiling speakers from Bose, JBL, or Klipsch provide cleaner reproduction than commercial ceiling speakers. The microphone system should be either a premium ceiling array (Shure MXA920, Sennheiser TC Ceiling 2) or individual delegate microphone units for each position on the table — providing per-seat control and the cleanest possible audio pickup.

Boardroom acoustic treatment — fabric wall panels, ceiling baffles, carpet — is not optional; it is a prerequisite for professional audio performance. A reverberation time (RT60) below 0.5 seconds is the design target for this room type.

Control System

Boardrooms require full room automation from a premium touch panel. Crestron TSW series or AMX Modero-X provides the interface; the control system behind it should manage displays, cameras, audio, lighting (including integration with the building's DALI or KNX lighting control), motorised blinds, and video conferencing codecs from a single interface.

Simpler is better for executive users. The touch panel interface should present three or four large, clearly labelled presets: "Board Meeting," "Presentation," "Video Call," "Standby." Executives should never need to understand the underlying system to use the room.

Auditoriums and Multi-Purpose Halls

Scale Changes Everything

Auditoriums and multi-purpose halls — common in Bangladesh universities, corporate training centres, and hotel conference facilities — require professional AV system design that approaches broadcast quality. The occupancy scale (50–500 persons) demands distributed audio, large-format projection or video wall display, and dedicated AV control.

Projection is almost universally the display choice: 150-inch to 300-inch screen sizes are typical, requiring high-lumen laser projectors (8,000–20,000 lumens for the largest spaces). Distributed audio using delay zones ensures that participants at the back of the room hear sound that is time-aligned with what they see on screen — eliminating the disorienting echo that occurs when speakers hear the PA audio before it reaches the projection screen.

Confidence monitors — smaller displays positioned facing the presenter — show slide notes or the presentation content without the presenter having to turn away from the audience. Wireless microphone systems (handheld and lapel/clip-on), lectern microphones, and audience Q&A microphones complete the audio picture.

SSAL's Room-by-Room AV Design Service

SSAL designs AV systems for every room category described in this guide — from simple huddle room deployments to full executive boardroom and auditorium installations across Bangladesh. Our design process begins with a physical survey, proceeds through a detailed specification, and concludes with a professional installation and commissioning process that includes staff training.

We carry Crestron control systems, Shure and Sennheiser microphone systems, Samsung and LG commercial displays, and Sony and Panasonic projection systems — the complete toolkit to execute any room type correctly.

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