Meeting rooms and pro AV

The faults have stayed the same over the years. They happen before the first word is spoken, and almost never in the screen itself.

From which follows the most important rule for any room: a meeting has to start in two moves. Plugging in a cable or pressing a button — that is the limit. We do not judge a room by its diagonal, but by the time it takes to reach the first picture.

The most common planning mistake is a screen that is too small: it looks enormous in an empty room and turns out too small once the room is full. As a rule of thumb, the furthest seat should be no more than four to six times the picture height away — four for anyone showing tables and plans, six for anyone showing slides and faces.

On choosing between a video wall and a projector: a projector needs blackout and a light source that has to be serviced. An LED wall or a large display stays legible in daylight and switches on instantly — as soon as a room is used daily, the screen wins. Pixel pitch and viewing distance are covered in the chapter on hardware.

Two worlds share the market, and both have their place. A permanently fitted room — Teams Rooms or Zoom Rooms — has its own computer, a keypad on the table and a calendar. The meeting appears as a button; one press starts the call with the room camera and the room microphones. That is the most reliable sequence, but it ties the room to one system.

The other route is BYOD: the laptop people bring stays the computer, and the room supplies picture, sound and camera. By cable or wirelessly, with Barco ClickShare for example, the screen content reaches the wall, while camera and microphones announce themselves to the laptop as accessories. This works with every conferencing service and with every guest in the building.

For rooms with external guests we recommend the third option; for rooms used only by the team, the first.

People dialling in will forgive a mediocre picture, never poor sound. Speech intelligibility is not created in the microphone but in the room: a meeting room with a glass wall, a stone floor and a long table echoes, and no microphone takes reverberation back out afterwards.

The order is therefore always the same: acoustics first, then microphones, then the camera. Acoustics usually means a few square metres of absorbent surface on the ceiling and the rear wall, a carpet or a curtain in front of the glass façade — unspectacular and effective at once. Only then the microphones: a bar below the screen covers a short table, two table microphones a long one, a ceiling microphone the whole room — the last only in treated rooms, otherwise it mostly picks up the ventilation.

With the camera, the angle matters more than the resolution. It belongs above or below the screen, never in a corner, or those dialling in see nothing but profiles. Automatic framing that zooms in on whoever is speaking is reliable today. And one last point: the people in the room have to see the people dialling in — a second screen just for faces pays off in every hybrid room.

The best installation is the one nobody talks about. You get there with three decisions. First: one place to operate it, not three — a keypad on the table, and the remote controls disappear into the drawer. Second: labels in the language of the house. "Laptop", "Conference", "Everything off" say more than "HDMI 2" and "Input Select".

Third: a standard state. Every room returns to it by itself after the meeting — home screen, medium volume, camera on the wide shot, no one else's sign-in still active. We set a timer for this: if no signal is detected for twenty minutes, the room falls back. It sounds like a detail and saves hundreds of calls over a year.

On the table the rule is: as few cables as possible, but the right ones. One cable carrying picture, sound, network and charging power through the same plug covers most laptops; a second beside it covers the older ones. The connection box belongs in the table, so the cables disappear downwards instead of hanging over the edge.

What happens behind the wall decides whether a room is still usable in five years. Plan conduits generously: every additional conduit is a small effort during construction and a building site afterwards.

Height matters when mounting: a screen in a meeting room hangs lower than most people expect — the centre of the picture sits roughly at the eye level of a seated person. Projectors and loudspeakers at the ceiling belong in the load-bearing structure, not in the suspended ceiling.

A well-equipped room is of little use if nobody knows whether it is free. The small display beside the door closes that gap and creates no work, because it draws its data from the same calendar as the room: free or busy, readable from five metres away, the title of the current meeting, the next free slot, a button for spontaneous use.

The real gain lies in releasing bookings nobody turned up for: booked, never used, never cancelled. When the sign releases itself after ten minutes without confirmation, capacity appears that nobody had seen before.

Take the occupancy figures that accumulate seriously: after a quarter they show which room size is missing — usually not the large rooms, but the small ones for two to four people. Door signs are covered in more detail in the chapter on hotels and reception.

A room is built by tradespeople and run by IT. Most is lost between those two moments, which is why every project includes a handover that is more than a folder of manuals.

Standardisation is the biggest lever. Anyone building five rooms builds them alike: the same operation, the same labels, the same layout on the table. Training then takes ten minutes, and a replacement device fits anywhere. We prefer to train twice — at handover and after four weeks, once the real questions have come up.