Sound Lock — Buffer Spine (W5)

The W5 buffer spine: a high-STC buffer between the west production rooms and the east rooms, with one door (D2) from Control · per SSOT v3.8 · click to zoom
Plan — buffer spine (W5) between the WEST production rooms and the EAST rooms (SSOT v3.8) CONTROL (VO Live adjacent —direct via W6 / D3) BUFFER SPINE (W5) sound lock / buffer corridorSTC 55 · 275 cmno treatment (SSOT) EDITING /VIDEO STUDIO D2 STC45 solid wall — no door One door (D2) into the buffer spine · D3 and D4 are separate single doors (W6 / W7)

Build sequence

1
Hang D2 as a sealed STC-45 SET
D2 (Control ↔ buffer spine, on the W5 face) is the one door into the spine. Hang it as a complete sealed SET — magnetic perimeter + drop seal (see Build 06).
2
Keep the spine a clean buffer
Per SSOT the buffer spine is a sound-lock / buffer corridor (STC 55, 275 cm) — not a production room and with no acoustic treatment. Its isolation is the high-STC shell + air volume; don't add panels or wool.
3
Seal every penetration
Any service crossing the W5 walls (conduit, duct) is acoustically sealed / back-boxed so the STC-55 shell isn't shorted out.
4
Verify the seal
Light-test D2's perimeter and confirm the spine's isolation by field measurement, ASTM E336 (Build 06 HOLD POINT).
The buffer spine isolates by its STC-55 shell + the sealed D2 door — verify by field measurement (ASTM E336). D3 (Control↔VO, W6) and D4 (Editing↔Studio, W7) are separate single doors, covered in Build 06 — Doors.