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In Reply to: RE: Corner Traps - Quantity Over Symmetry? posted by Ethan Winer on January 29, 2009 at 10:00:37
>One inch thick is okay for side walls and ceiling, though two inches thick is preferred. But for the rear wall behind you, bass is a big issue too. So for that location I suggest much thicker.
Okay, Thanks again Ethan! I took some careful measurments last night. Here's my plan for the back wall... does the plan below seem reasonable?
Center of back wall: Build a free-standing frame, 3' wide and 7' tall, out of 1x6 lumber. Fill the unit with 705-FRK and 705 for a total of 4" thick. Place that along the back wall behind the listening chair. Spacing from the back wall, I dunno... how does 4" sound for starters?
Corners of back wall: Build two free-standing frames, 18" wide and 7' tall, out of 1x4 stock. Fill the frame with 2" thick 705 or 705-FRK depending on what I have left over, and space these against the sidewalls, spaced out about 1". I'd like to put more here, but the door needs to open...
Ceiling at back wall: I can build a frame that is 36" wide by 11' long by 5.5" deep, and place it on the ceiling right against the back wall. I have 7" total height space here, so I can do, say 4" thick 705 or 703 spaced up to 3" from the ceiling.
The ceiling would be the last step, and would be an as-needed type of thing. My speakers have almost zero dispersion vertically, so I haven't had the ceiling or floor be a big issue yet. The big-arsed trap on the ceiling above the listening position would really be a bass trap.
Of course this treatment will be in addition to two floor-to-ceiling corner traps behind the speakers and some first reflection treatment.
Thanks again!
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