John Sayers' Recording Studio Design Forum Archive

Hello,

I've built a 2' X 6' bass trap with 1" X 4" pine wood in which there's Roxul Safe'N'Sound 3" thick fiberglass insulation.

The front of the frame is a 2' X 6' (1/4") plywood sheet covered with stretched cloth fabric.

My idea is to hook 2 of them on the rear wall of a control room (with sealant around to make them airtight).

The problem i see is that there's not a much air gap inside..If i want to absorb low ends do you guys think that this box can do the trick or maybe it needs more air gap ?

Thanks for letting me know,
Dan

Take a look at Ethan Winer's site if you haven't already

http://www.ethanwiner.com/basstrap.html

He talks a little bit about what all the stuff inside a panel trap does, and how it'll affect the tuning. I believe that thicker insulation (He recommends 1" rigid fiberglass, whereas you're using 3") placed closer to the front panel, as you described, will narrow the effective frequency that the trap absorbs, but help the trap to absorb more of that frequency range.

So if you know what freqs your room will have trouble with, and can tune the traps to those freqs, this would be good. For my purposes, it seems better to have the panel traps absorb a greater range.