/ops/afterdark/av
AV deployment and calibration
Signal chain
- Playback machine (48kHz/32-bit float)
- Redundant interface A/B
- Digital processor with crossover + limiter
- Sub arrays and tactile transducers
- Lighting desk cue follow
Room assumptions
- Audience density impacts tactile perception
- Hard-surface rooms increase perceived attack
- Sub deployment must be adapted per ballroom geometry
Equipment tiers
Tier 1 / Full Immersion
Conference ballroom with distributed sub arrays and dedicated tactile floor zones. - 6+ high-output subs
- Networked DSP
- Lighting follow integration
- Real-time SPL monitoring
Tier 2 / Scaled Ballroom
Moderate room size with clustered sub deployment and visual reinforcement. - 4 subs minimum
- DSP with scene recall
- Manual lighting handoff
- Limiter verification
Tier 3 / Demo Mode
Small technical demo for planning review only. - 2 subs
- Single DSP profile
- No claim of full experience
- Reference visuals
Placement
- Favor symmetrical low-frequency coverage over edge loudness.
- Keep tactile zones clear of stage rumble cancellation nodes.
- Document room-specific nulls in calibration notes.
Calibration checklist
- Verify pink-noise reference level before cues
- Run phase-alignment sweep at 32Hz and 50Hz
- Confirm limiter threshold and look-ahead
- Capture SPL + vibration baseline snapshot
- Sign off with operator and A1 initials