Conference AV and Audio

Practical Tips and Tricks for Flawless Events

Great audio-visual execution at a conference is invisible. When everything works, no one notices. When something fails, it becomes the only thing anyone remembers.

Here’s a practical guide to getting conference AV and audio right — from planning through execution.

Start With the Audience, Not the Gear

The best AV decisions come from asking how the audience will experience the event. Is it in-person, hybrid, or fully virtual? Will there be video playback, multiple speakers, or live streaming? Answer these questions early and share the answers with your AV team.

The more information you provide upfront — slides, logos, video files, audio tracks — the fewer surprises you’ll face on show day. Always bring backups: a spare laptop, duplicate files, and an extra microphone.

Audio: The One Place Not to Cut Corners

If budget cuts are necessary, cut lighting or video before you cut audio. An audience that can’t hear the speaker clearly will check out, no matter how impressive the screen looks. Research shows that straining to hear triggers a stress response — audiences that spend an hour straining end up exhausted.

Feedback and how to prevent it. A common myth is that microphone feedback happens because someone speaks too loudly. The opposite is true: feedback usually occurs when a speaker is too far from the mic or too quiet. The engineer raises the volume, the mic picks up more ambient sound — including the speakers — and a loop forms.

The fix is simple: hold a handheld mic within about 15 cm of your mouth, keep a lavalier mic close to the mouth and clear of clothing, and avoid turning your head away from the mic.

Choosing the right microphone. Match the mic to the room, the speaker, and the format:

  • Lectern mics — for speakers standing at a lectern with notes (we use the Shure MX412).
  • Table mics — for panels; ideally one per person or one between two.
  • Handheld radio mics — for speakers who move around or for audience Q&A, though not ideal if the speaker needs their hands.
  • Lavalier and headset mics — for hands-free movement.

Always have a spare. Keep backup microphones charged and within reach. This is the most commonly skipped item and the most regretted one.

Visuals: Making Sure Every Row Can See

  • Screen size and placement. Check sightlines from every row, including for remote participants. In wide or deep rooms, use multiple screens. As a rule of thumb, the farthest seat should be no more than five times the screen width away, and the bottom of the screen should sit at least 1.5 meters off the floor.
  • Projectors and displays. Match projector brightness (lumens) to the room’s ambient light. Use matte white, non-glare screens. For hybrid events, factor in how remote attendees will see the display.
  • Lighting. Lighting isn’t just atmosphere — it’s clarity. A speaker lit poorly looks uncertain, even when they’re not. Avoid blown-out whites, backlighting from windows, and dim stages that flatten speakers on camera. These issues are cheap to fix early and expensive to fix late.
  • Accessibility. Build in captions that are easy to find and read, dedicated caption displays, clear positioning and lighting for sign language interpreters, and camera framing that includes interpreters or captions for remote viewers.

Hybrid Meetings: Where Audio Gets Tricky

  • The hidden feedback trap. In hybrid meetings, a frequent problem is having the physical room and the online meeting both carrying audio. When in-room attendees join the virtual meeting with their mics and speakers open, feedback follows. The fix: in-room participants who aren’t speaking should mute their speakers and zero their mic volume. This can be performed by a competent AV technician.
  • Keep devices consistent. In Zoom or Teams, select the same device for audio input and output — typically the room’s speakerphone. For video, use the room camera. If using a personal laptop, connect USB, HDMI, and Ethernet to ensure stable audio, video, and network.
  • Prioritize the network. Put conferencing systems on a reliable VLAN or dedicated SSID with reserved bandwidth. Set QoS priority for Teams and Zoom traffic on the router to reduce jitter. Use wired Ethernet for the main codec or PC; leave wireless for guest devices.

Quick Tips for Speakers

  • Stay close to the mic — within 15 cm for handhelds; keep lavaliers unobstructed.
  • Don’t stop if audio fails — keep talking. Technicians will fix it or bring a spare mic.
  • Don’t turn away from the mic (off-axis) — especially with a lavalier; volume drops fast.
  • Submit materials early — slides, videos, and fonts, using standard formats.

The Bottom Line

A conference that feels effortless to the audience is the result of deliberate AV planning. Every choice — microphone type, screen size, lighting angle, network priority — plays a role. Skip one, and the whole experience suffers.

Accidents will happen. With the right preparation, most can be recovered. The best outcome, though, is when preparation means they never happen at all.

© Coastal AV 2026