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In Reply to: RE: Bass trapping behind walls? posted by David Aiken on June 04, 2008 at 22:15:12
Just to add to David's mostly-correct advice - fluffy fiberglass is acceptable when the thickness (or in this case cavity depth) is large. For six inches or less you really do need rigid fiberglass. But with a foot or more of depth the fluffy stuff works just as well.
--Ethan
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