Quote:
Originally Posted by Ethan Winer  I'll offer an opposing opinion. 
As I see it, covering an entire room with thick rigid fiberglass is the best route to a flat low frequency response with minimal ringing. But it has to be thick - at least 4 inches thick if not 12 - and the corners should definitely be thicker. At least half of the fiberglass should be covered with cardboard or thin plastic to prevent making the room totally dead at mid and high frequencies. I'd leave the fiberglass uncovered at the side wall and ceiling reflection points, and the entire rear wall, and cover all or most of the rest with cardboard etc.
--Ethan |
Be careful with the thin plastic. The room with 100% 703 that I experienced used way too much thin plastic on top and in addition to the dead feeling in the room there was an annoying Zing as the very high frequencies richoceted off the plastic.
I'd use wood slats to add back some controlled bounce.
In my drum booth wood slats are applied to sheet rock that is angled in an accordian pattern that spreads the bounce. This is applied on about 60% of the back wall.
And for heaven's sake don't put thick carpet on the floors! Still think that at least
some diffusion is helpful to make the room bearable for humans!