John Sayers' Recording Studio Design Forum Archive

John Shryock wrote:my thoughts on that, from my limited knowledge:

having the plastic doesn't affect the functionality of the bass trap, at least for the actual bass frequencies. the 1 or 2 millimeters of plastic sheet has almost no effect on low frequency content. imagine standing behind a plastic painter's dropcloth like the ones i used - it offers almost no sound barrier whatsoever [ SPAM LINK REMOVED- SPAMMER BANNED AND BLOCKED FOREVER ] however, the plastic might function similarly to RFK fiberglass, giving a slight reflection in high frequencies.

having the plastic does keep the glass fibers in better than not having it, although that may not be entirely necessary either.

now, i may be entirely incorrect - in this case, would someone please put me on the right track?

thanks,

John

philippap01 wrote:But you can also use cells if it does not work because it is a very effective sound insulation.