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Join Date: Apr 1999
Location: Mountain View, CA USA
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Will covering a bass trap w/perforated hardboard reduce effectiveness?
Will the 3/16" perforated panel shown in the pic reduce the effectiveness of OC 702 behind it?
I'm covering bass traps (6" thick OC 702 x 24" x 60") with grasscloth fabric.
For looks and with no small effort I made the faces curved.
I carefully measured, cut, and stapled the grasscloth to the frames.
I made the frames a bit oversized in depth so if I had a problem with the grasscloth buckling or wrinkling, I could put batting in to fluff it out.
Didn't work, there are wrinkles I can't get rid of.
So I'm redoing them with perforated hardboard panels to match the frame curvature and give a surface for the grasscloth to follow.
My concern is that with only 5% open area the panels will impede effectiveness of the traps.
The panels are 3/16" thick and even with the curvature applied (see pic; if you're thinking it doesn't look like 6" thick it's because 4" is in the wall cavity behind it), it flexes noticeably with moderate finger pressure.
So likely it's transparent to bass but I'd like someone with more experience to verify.
Increasing the open area by drilling the holes bigger is a nonstarter (about 5000 holes).
I could groove them to increase flexibility, but I'd rather not as that would still be quite tedious.
Last edited by noah katz; 08-06-2014 at 07:36 PM.