Why sequence decides everything
A home theatre fails in a predictable way. The ceiling gets designed first because it is the visible element, then the AV consultant arrives and has to hang speakers wherever there is space. They end up in the wrong positions, they look like an afterthought, and the room sounds worse than a soundbar in a living room.
In a theatre, the ceiling is the last thing you design and the first thing people think about.
Greenbox principal designer
What we resolved first
- Seating tiers and sightlines. Two rows, with the rear tier raised enough that the back row sees over the front — this sets riser height, which sets floor levels, which sets everything else.
- Screen size and viewing distance. Derived from seating position, not chosen first and accommodated afterwards.
- Speaker positions. Fixed at ear height for the seated rows, with the centre channel aligned to the screen.
- Projector position and throw. Which determined the exact ceiling recess and cable route.
- Acoustic treatment. Absorption where reflections would arrive early, diffusion at the rear, and bass management in the corners.
- Then the ceiling. Designed around all of the above, with concealed lighting that does not wash the screen.
Design and build under one accountable roof
Acoustics that look intentional
Acoustic treatment is usually ugly because it is added last. Here the fabric-wrapped absorption panels are the wall finish, framed by warm timber reveals with concealed lighting behind them. The vertical timber slats are not decorative — the spacing and depth do real diffusion work at the rear of the room.
| Surface | Treatment | Acoustic function |
|---|---|---|
| Side walls, front half | Fabric-wrapped absorption | Kills early reflections that blur dialogue |
| Rear wall | Timber slat diffusion | Scatters rather than absorbs — keeps the room from sounding dead |
| Ceiling, first reflection zone | Concealed absorption above the panel line | Same function as side walls, invisible |
| Corners | Bass traps within the joinery | Controls low-frequency build-up |
| Floor | Carpet over underlay | Absorption plus footfall isolation between tiers |
Lighting
Three separate circuits: warm cove lighting for entry and conversation, dimmable step lighting at the riser for safety during a film, and fully-off for viewing. No downlight is positioned where it can throw light onto the screen — the most common lighting error in home theatres.
Selected work by Greenbox Design Studio. Tap any image to enlarge.
Frequently asked questions
What size room do you need for a home theatre?+
A dedicated two-row theatre works comfortably from about 12 × 18 ft, allowing seating tiers, a proper viewing distance and space for acoustic treatment on the walls. Smaller rooms can work with a single row, but tiered seating needs the length.
When should acoustics be designed?+
Before the false ceiling and before any joinery. Acoustic treatment, speaker positions, sightlines and cable routes all constrain the ceiling design. Reversing that order is the most common reason home theatres underperform.
Does acoustic treatment have to look industrial?+
No. Absorption can be fabric-wrapped and framed as wall panelling, and diffusion can be executed as timber slatting. On this project the acoustic treatment is the room's primary finish — it does real work and reads as deliberate design.
What lighting does a home theatre need?+
At least three circuits: warm cove lighting for entry and conversation, dimmable step or riser lighting for safety during viewing, and a full-off scene. Critically, no fixture should be positioned where it can spill light onto the screen.