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Bass Trap help



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My room sorta looks like this with the total length 25'

Im getting a rather large peak at both 63 and 80hz using warble tones and a Radio Shack sound level meter. The right from the listener opens into a kitchen. Anyway. I bought 27-Owens Corning 703 2"x24"x48" panels. Surely this is enough material? Stacking the panels 3 deep for 6" deep panels, that gives me 9 panels at 24"x48". Ive been moving them around, first trying 2 in the front corners, 1 to each side of the speakers, 3 to the rear (dead behind and one to each side, and the lasy one the wall to the left of the listening position. Zero different as read before and after using my meter.

I dont understand.

Help
jim1961jr
brf
1,715 posts
 
For those frequencies google "super chunk corner bass traps". These work extremey well and are easily DIY'd
samhar
1,048 posts
 
You might try moving your chair forward in small increments and check readings.
ngjockey
1,042 posts
 
Even DIY sealed membrane traps, using 1/4" hardboard as the membrane would have to be at least 4'X4' or 4'X6' to be effective for 63 Hz.
jim1961jr OP
9 posts
 
I found the "super chunk" article. Thanks for that. Since I already have the OC 703, ill build it from that and hope it works as well as the mineral wool material.

Thanks.
jim1961jr OP
9 posts
 
Good advice. I have tried various locations for the listening position. Going further forward makes the peak greater at 63hz, where moving back creates one at 100hz. Perhaps going back will help some given 100hz is a bit easier to manage than 63hz.

Thanks.
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