Lighting tool · Acoustics · Focal Point, a SESCO line
RT60 Estimator for Acoustic Ceilings
Enter the room, pick the finishes, and this estimates the reverberation time you have now, the target for that kind of space, and how much Focal Point acoustic felt closes the gap. It is the same Sabine arithmetic the manufacturer walks through in its design guide, using its published Sabins-per-square-foot figures for each baffle array. An estimate for a first conversation, not a report. I represent Focal Point Acoustic Solutions in Broward, Miami-Dade, Palm Beach and Monroe counties.
- RT60 = 0.049 × V ÷ A
- Targets by room type
- Manufacturer-published Sabins
- Runs in the browser, nothing sent
Estimator
Run your room: current RT60, target, and how much Focal Point felt gets you there
This is the same Sabine arithmetic Focal Point walks through in its design guide, with typical absorption values for common finishes and the manufacturer’s published Sabins-per-square-foot figures for its baffle arrays. It is an estimate for a first conversation, not a report — for that, Focal Point’s acoustic team runs the room properly and I hand you the layout.
1. The room
2. What the room is made of
3. Add Focal Point
Enter the room.
Method: RT60 = 0.049 × V ÷ A (Sabine, feet). Existing absorption uses typical published NRC values for the finishes listed; furniture and people are added as a flat allowance. Array figures are Focal Point’s design-guide values at 1000 Hz for a 14' ceiling. The Nivo figure is derived from the guide’s 3,840 sq ft conference example (638 Sabins). Small rooms under about 1,500 cu ft do not reverberate in a way this formula describes well; treat those by surface area instead, which is exactly what Focal Point did on the CSHQA job below.
Where the numbers come from
Before you rely on it
The array Sabins-per-square-foot figures are Focal Point's own, taken from its acoustic design guide at 12-inch baffle height and 1000 Hz. The absorption values for floors, walls and ceilings are typical published coefficients for common finishes, not measurements of your room. Room-type targets are common design targets — the classroom figure follows ANSI S12.60 — and none of them is a code requirement. For anything that goes on a drawing, Focal Point will run the room properly; send me the plan and I will get it to them.
The product behind it
The full Focal Point Acoustic Solutions portfolio — baffles, ceiling systems, tiles, wall panels and pendants, with spec sheets, colors and three worked rooms — is on the acoustic lighting page. The brand page is at Focal Point.
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