The 500-person keynote, itemized.

The 500-person keynote is the most common scope in corporate AV and also the most commonly mis-scoped. Big enough to need a flown line array and a calibrated LED wall. Small enough that producers sometimes try to ship it with a hotel-house rig and a borrowed laptop on QLab. The result is a show that almost works — until a wireless mic drops at the worst moment or the keynote video stutters because the playback box was running off a single SSD and a hope.

The version below is the operational shape — seven sections with named gear and a printable checklist at the end. Bring it to the AV briefing. Or read the bid against it.

1. Room and venue.

Start with the room. The same 500-person headcount fits a hotel ballroom (Beverly Hilton, the Ritz, the JW Marriott downtown), a theatre (the Wiltern, the Theatre at Ace Hotel, the Orpheum), a soundstage (Goya, Sunset Las Palmas, Quixote in Culver City), or a convention space (the Microsoft Theater, the LA Convention Center, the Petersen private hall). Each room sizes the rig differently.

What to confirm before the bid lands: ballroom dimensions (length × width × ceiling height), available rigging points and the per-point load rating, FOH location and distance from stage, sightlines from the back row, ADA seating accommodation, dock access, freight elevator capacity, power tap location and total available service. For union houses, confirm the steward situation. For hotel ballrooms, confirm the noise restrictions on load-in (most don't allow case wheels in the lobby before a certain hour) and the catering exclusivity rules (some venues bar food prep behind the FOH world entirely).

Ceiling height drives the rig. Under 18 feet and you're ground-stacking the line array and ground-supporting the LED. Over 22 feet and you're flying everything. The middle band — 18 to 22 feet — is where most ballrooms live and where most rooms get scoped wrong because the bidder assumed flown without checking points.

2. Audio.

At 500 people, the PA is a flown line array, not point-source on sticks. Specifically — L-Acoustics K2 (8-12 boxes per side depending on throw) or L-Acoustics Kara II for shorter rooms, or d&b KSL for a tighter ballroom with mid-range bias. KS28 or SL-Subs ground-stacked at the stage lip for low-frequency. Front fills along the lip for the first three rows. Delay rings at row 18 or 20 if the room is more than 100 feet deep.

FOH console: DiGiCo Quantum 338 or Yamaha Rivage PM7 for a 500-person keynote. Both handle the channel count cleanly (24-48 inputs with stems, comms returns, playback returns, IFB) and both have the redundancy you want — dual engines, dual power supplies, snapshot-recallable cue lists for speaker rehearsals.

Wireless mic plan: Shure Axient Digital as the primary channel for every speaker — headset and lavalier each, both deployed, neither idle. Sennheiser EW-DX (2050 series) as a redundant backup pair patched alongside. Frequency coordination against the FCC database for the show date and a live RF scan of the venue 48 hours before doors. For comms, Riedel Bolero or Clear-Com FreeSpeak II on a dedicated comms loop — show caller, FOH, LD, content op, video op, stage manager, video director if there's IMAG.

The single most-skipped audio line is system tune. A real system tune — pink noise, sweeps, real-room measurement with Smaart, time-aligning the line array to the subs, phase-checking the subs to the stage — takes two and a half hours when it's done right. Bidders who skip it deliver a PA that sounds fine in the front and muddy in the back. Ask explicitly whether system tune is in the scope.

3. LED video.

At 500-person keynote viewing distance — typically 40 to 100 feet from the back row to the wall — the right pitch is 1.9mm for an exec-tier briefing where the front row is close, or 2.6mm for the typical ballroom keynote. Below 1.9mm is over-specced for the throw and over-priced. Above 2.6mm and the back row sees pixel structure on the speaker portraits.

Size: a typical keynote main wall is 30 to 50 feet wide and 12 to 17 feet tall (the 16:9 ratio at 32-by-18 feet is the sweet spot), with optional IMAG side screens at 12 to 16 feet wide if the speaker isn't on a thrust and the back rows need a closer view. The main wall is the content surface — keynote slides, brand sizzle, product reveal sequences. The IMAG side screens are the speaker — live camera mix from a two- or three-camera shoot.

Processor: Brompton Tessera SX40 as the primary — 4K-capable, broadcast-grade calibration, color-space management for camera capture, sub-frame latency. Brompton S8 as a backup processor pre-patched in hot-standby. The calibration step matters — every keynote shot for recap or hybrid stream needs the LED color-matched to the broadcast camera package (typically Sony Venice 2, FX9, or Panasonic Varicam). The calibration file ships with the panels; the bidder either uses it correctly or fixes it on the wall, and the cheap way to find out which is to ask before the bid.

Backup posture: spare panels at 5% of total panel count, staged at the foot of the wall. Backup processor switched into hot-take so the swap from primary to backup is sub-second on a failure. Test the swap before doors, not after a failure.

4. Lighting.

Three layers — movers, wash, audience light. The mover layer is the look — Robe MegaPointe or Ayrton Diablo on the front truss for keynote moments, Martin MAC Aura XIP or Robe Spiider for color wash from upstage. The wash layer is the room — ETC Source Four LED in a stage-key plot lighting the talent at face level, color-temperature matched to the broadcast camera package so the speaker doesn't read green in the recap. The audience light layer is the moment — soft top wash on the audience for the panel discussion, dimmed during the keynote.

Key on talent is the non-negotiable. The speaker has to be lit from the front at face level, soft enough not to throw a hard shadow on the back wall, bright enough to expose cleanly on the broadcast cam at 5600K (or 3200K if you're shooting tungsten). A keynote with no key light reads as a silhouette in the recap and looks under-produced in the room.

Console: grandMA3 programmed against the run-of-show with redundant control (a second console hot-standing as tracking backup). Every cue has a number, every speaker has a look, every transition has a fade time written on the cue list. The LD walks the rehearsal with the show op so the show op has the cue calls in hand before doors.

5. Content and playback.

Content rig: Disguise d3 for timecode-locked sequences with lighting handoff (product reveal moments, sizzle reels, lower-third graphics, branded transitions). Or — for a simpler show — a QLab rig running on dual Mac Studio nodes with cue-by-cue handoff. Both work; Disguise earns its line on a show with synced lighting cues and a product reveal moment, QLab earns its line on a show with mostly cued playback and a single deck.

Deck workflow: speakers' decks land in the content folder by the lock date (usually 48-72 hours before doors). The content op opens each deck in the playback environment, scrubs every transition, and flags anything that doesn't render — embedded fonts that didn't ship, video files in the wrong codec, slides where the speaker notes accidentally got promoted to the wall. The deck team gets a punch list back same day.

Lower thirds: pre-built in the content folder with each panelist's name, title, and headshot at the spec'd safe area. Lyric or cue routing: where applicable, lyric files for any musical segments and pre-routed cues for the show caller to fire at the right beat. Pre-show video: a 60-90 second loop running on the wall as the audience arrives, branded and ambient so the room is alive before doors.

Backup posture: dual playback nodes, identical content load on both. The backup runs in hot-take so a primary failure switches in under a second. Test the switch before doors. Never on the show.

6. Show direction and cue management.

This is the part most corporate keynotes under-spec because the buyer assumes "the AV company will figure it out." They will — but the show goes better when the show caller is a named position with a real run-of-show and a real cue stack.

Show caller: one person on comms calling every cue — lights up, mic up, video roll, LED transition, IMAG cut. The show caller works from a printed run-of-show with cue numbers in left margin, talent action in center, and notes in the right margin. Every cue has a "standby" call and a "go" call. The comms loop is the show caller, FOH, LD, content op, video director (if IMAG), and stage manager.

Run-of-show: locked 24-48 hours before doors. Includes every speaker, every deck, every transition, every panel intro, every reception cue, every house music change. Updates after that window are handled with a written addendum so every position on comms has the same version of the document.

Pre-show workflow: dry tech the morning of doors (mic check, line check, lighting cue walk, content QC pass on the wall, comms test). Tech-check at one-hour-to-doors (full run of the first 10 minutes of the show plus the closing). Speaker rehearsal the day before, run by the same console operators who run the show, on the same cue stack, in the same room. The speaker who walks the rehearsal is the speaker who walks the show.

7. Day-of contingencies.

Failure modes, in priority order.

Power. Confirm the venue's primary power tap and the backup generator path. For a show that can't go dark, scope a UPS on the playback chain and on the FOH console — a 90-second runtime is enough to ride out a transient and switch to generator. Ask the venue ops lead which other tenants are sharing the building's electrical service on the show day; a third-party event blowing a breaker in the next ballroom over should not take down your show.

Mic failure. Hot-swap protocol: every speaker has two wireless packs (headset and lavalier) deployed and live. If the headset drops, the show caller cuts to the lavalier on the same channel inside the next beat. Spare packs charged and pre-frequency-coordinated at the FOH world for swap if both go down on a single speaker. Capsules and windscreens spare-stocked.

Comms failover. If the primary Bolero loop goes down, every position on comms has a secondary handheld with the comms frequency loaded. The show caller has both. If both fail, the stage manager and the show caller default to hand signals — practiced in rehearsal, not invented at doors.

Content backup. Dual playback nodes, hot-take handoff, tested the morning of doors. A USB stick with the deck-and-sizzle bundle at the FOH world as a final fallback. The fallback is for the press release after the show, not for the show itself — if the dual playback fails, the show has already had a bad moment.

Wireless interference. RF scan the morning of, frequency plan re-tuned against any new tenant traffic in the building. Spare frequencies preloaded into every pack. The wireless coordinator stays on comms for the entire show, watching the RF analyzer.

Crew failure. Lead positions have a written succession plan — if the FOH op is sick on show day, the secondary engineer steps in. Comms cue lists are documented enough that a second-chair op can run the show on the same console with the same snapshots. This is the contingency nobody wants to scope and the one that saves the show twice a year.

The checklist.

Print this. Bring it to the AV briefing meeting. Or hand the brief to the studio and tick it off against what they come back with.

A 400-person exec offsite is the same checklist with smaller boxes. A 600-person launch is the same checklist with more cameras. The discipline doesn't change.

For more on how this rig is scoped per show, see keynote AV production in Los Angeles. For a conference scope (multi-track, breakouts, longer run), see conference AV production. For a quarterly all-hands or a hybrid town hall, see all-hands broadcast production.