| Scope | Responsible party |
|---|
| Acoustic design, specification, commissioning | Acoustic consultant (Obai Sukar) |
| Walls, float floor, ceiling, treatment install | General contractor |
| HVAC units (IDU/ODU/ERV), ducts, silencers | HVAC contractor — to consultant spec ([AC] certified silencers) |
| Electrical, LV, AV cabling (snake/XLR/Cat6/HDMI) | Electrical + AV contractor |
| Acoustic doors + observation window | Supply: IAC / AKINCO · Install: GC |
| Studio desk | Buy ready-made (owner / AV) |
| RT60 / NC / STC measurement + sign-off | Acoustic consultant |
HVAC units/ducts/silencers are procured + installed by the HVAC contractor, but to the acoustic consultant's spec (see 'HVAC — By Others' in the BOM). Sign-off only after measured RT60 + NC pass.