· Specification starter / AV systems
AV systems
scope outline.
Room-by-room AV scope — loudspeaker selection, display sizing, DSP and matrix routing, control interface. Coordinated with acoustic envelope and structured cabling.
In scope
Room-by-room functional brief • Loudspeaker selection and SPL / STI target • Display sizing per viewing distance • DSP, matrix, microphone bus design • Control system (touch panel / keypad / app) • Calibration to measured baseline
Out of scope
Acoustic treatment design (separate acoustic-specialist scope) • Furniture and joinery modifications for AV integration • Permanent recording / broadcast licensing
· Documents required
Materials the consultant needs before specification starts.
Room schedule with intended use case per room
Architectural elevations and sections
Ceiling and wall construction (drives speaker mount choices)
Brand intent if any (vendor independence vs preferred manufacturer)
· Site survey
Pre-design walk-through verifications.
Room acoustic envelope walk-through (RT60 estimate by clap-test)
Sight-line audit for displays and projectors
Cable pathway availability from rack to room
Background noise survey for SPL target setting
· Deployment checklist
Engineering items every install of this discipline carries.
STI ≥ 0.50 in conference rooms; ≥ 0.45 in assembly halls
SPL design: source signal 25 dB above ambient at the furthest seat
Display height: bottom of screen at eye level for the back row
Control interface tested on the actual operator profile
· Coordination with other trades
Works owed to / from other disciplines.
Networking: AV-over-IP VLAN with PTP timing
Power: dedicated rack circuit + UPS for control surface
Fire: BGM override on the fire-alarm general signal
Architectural: joinery cut-outs for in-wall displays / speakers
· Commissioning
Measurable artefacts produced at handover.
SPL measured at design point per room
STI measured under design-condition occupancy
Display calibration (brightness / contrast / white-point) per room
Microphone bus test under typical use case
Control interface walk-through with the operator
· Handover
What the building team takes ownership of.
Room-by-room calibration report with measured SPL / STI
DSP configuration baseline (offline export)
Control system project file
Operator training certificate
· Risk register starter
Risks worth tracking from day zero.
Room acoustic envelope changed by furnishing not in brief
DSP firmware update breaking the calibration baseline
Display panel pixel-burn on static signage content
· Exclusions and assumptions
What is not in scope; what we assume to be true.
Assumes acoustic treatment will be procured as a separate scope
Excludes content production and signage authoring
· Where to go next