A conference can have the best programme of the year, but if the microphone feeds back at the opening or the star speaker's presentation can't be seen from row twenty, that is what everyone will remember. Audiovisual production for conferences is not an extra: it is the infrastructure that makes the content land. At Zenor we've spent years handling the technical side of conferences and congresses all over Spain, and we've condensed into this checklist everything we check before, during and after every session day. Save it: it will spare you more than one scare.
Start with the technical site visit (yes, before anything else)
Before talking watts or inches, you need to walk the room. During the technical site visit we measure the space, locate the power outlets and their real capacity, check the acoustics (auditoriums with a lot of glass or high ceilings behave very differently), verify loading and unloading access, and spot columns or dead angles that determine where screens and speakers go. It's also the moment to lock down the running order: who takes the stage, in what order, what each speaker presents and how long each block lasts. A conference without a locked running order is a conference improvising live.
Sound for conferences: microphones and PA without feedback
The golden rule: every word must reach the last row clearly, with no one straining to listen. That requires a PA system properly sized for the capacity, EQ'd for the room and, above all, a sound engineer for events controlling levels in real time. Feedback — that acoustic feedback squeal when a mic picks up its own speaker — is prevented with good monitor placement and a proper soundcheck, not luck.
- Headset or lapel mics for speakers who move around the stage
- Wireless handheld mics for the audience Q&A
- Table mics for panel discussions and debates
- Stage monitors so speakers can hear themselves
- Charged spare batteries and battery packs (always, no exceptions)
- Clean room-audio recording for follow-up content
Screens and projection: readable from the last row
Visual support matters almost as much as sound. For large rooms, LED screens win hands down over projectors: more brightness, better contrast with the room lights on, and formats tailored to the stage. Calculate the size based on the distance of the furthest viewer, and add support or repeater screens if the room is very deep or has columns. Don't forget confidence monitors (so the speaker can see their notes without turning around) or the countdown timer. If your conference is large, check out our guide to videowalls for conferences, where we go into detail on resolutions and formats.
Speakers and presentations: where most conferences fail
Our unofficial statistic: most incidents at a conference don't come from the equipment, but from the presentations. Files in obscure formats, embedded videos that won't play, fonts that shift out of place, personal laptops with no adapter… The solution is a clear content-intake protocol and a speaker-ready room where everything is tested before going on stage.
- Request presentations at least 48 hours in advance, in an agreed format
- Test every video and every embedded audio file on the actual playback equipment
- Have a slide clicker with a spare and define who advances each piece of content
- Reserve 10 minutes of stage testing with each key speaker
- Prepare a neutral courtesy slide for transitions and unexpected moments
Streaming and online attendees: the conference no longer ends in the room
More and more conferences add a remote audience, whether live or on demand. Professional streaming needs a multi-camera production, a dedicated audio mix (room sound doesn't work for the online feed), an internet connection with guaranteed bandwidth — plus a backup plan — and lower-third graphics with each speaker's name. If you're combining an in-person and a genuinely remote audience with two-way interaction, take a look at our article on hybrid events: it changes the way you approach production quite a bit.
The big day: last-minute checklist
- Full dress rehearsal with the running order in hand, at least 2 hours before doors open
- Check every microphone, one by one, with fresh batteries
- Play the first and last video of every block on the actual system
- Confirm streaming and recording signal with margin before kickoff
- Walkie-talkie or communication channel between stage manager, technicians and organisers
- Spare equipment identified and accessible: mics, cables, clicker, laptop
The difference between a conference that flows and one that stalls is almost never in the equipment list: it's in the planning and the human team behind it. That's why at Zenor we cover corporate events with our own technicians from start to finish, from the technical site visit to teardown.