Room Acoustics Forum by Rives Audio

Re: flush or hanging baffle?

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In Reply to: flush or hanging baffle? posted by Squonk on September 9, 2006 at 19:07:21:

All reflections occur at the room boundaries, so you'll do better to have the panels parallel rather than suspended in the air as you drew. This does not have to preclude getting absorption from both surfaces. If you space a panel a few inches off the wall, sound can get to the rear and be absorbed. Adding an air gap also extends the absorption to a lower frequency which is always welcome. The ideal air gap is equal to the material thickness. So if you use foam or rigid fiberglass four inches thick, a gap of 4 inches is perfect.
--Ethan

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