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  1. #1

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    Default Bass traps for corners?

    I am looking for some diy trap ideas, for the corners(triangle shaped. I am pretty limited on how large and want something that blends well into the corners, next to the 2.3tl's. What is a readily available insulation to get on the cheaper side. OC703? I guess you can say that I am advanced in woodworking as I am a furniture maker and carpenter, which should make it simple for me to construct them. I just want to get rid of the boominess that sometimes happens. Any proven corner traps that aren't imposing?

  2. #2

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    A friend of mine built these using OC 705.

    http://larchive.avsforum.com/www.avs...6#post21278446
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    Someone correct me if I'm wrong, but in the reading about bass traps, and acoustic traps in general, the information I have is that the more dense the material, the less effective it is as an acoustic trap. So 703 would be more effective than 705. But again, this comes from the net, so I don't know how accurate it is.
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    You are correct in your thinking for a given size. The harder stuff has a lower absorption more than the softer stuff and needs more to do the same job.

    Here is a great site for coefficients. Absorption Coefficients
    Quote Originally Posted by Timothy Smith View Post
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    When I first started checking into corner traps ,seems like people were cutting the OC panels into triangles and stacking them to the ceiling. Then others decided that the OC pink fluffy stuff worked better as Joe mentioned above. Also I've noticed some trap companies make corner traps that allow a certain amount of air space between the trap media and sheetrock or whatever the wall is made of. Maybe someone here has tried all 3 methods out and can chime in on what worked best.
    Last edited by Polkie2009; 01-25-2012 at 06:05 PM.

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    Quote Originally Posted by Polkie2009 View Post
    When I first started checking into corner traps ,seems like people were cutting the OC panels into triangles and stacking them to the ceiling.
    I did the triangle approach but on a smaller scale .Unfortunately they are not big enough to be very effective below 150hz -ish or so.
    http://www.polkaudio.com/forums/show...y+corner+traps

    To be effective to very low frequencies requires lots of material in both density(thickness) and surface area.IMO the large corner chunk approach (layered triangles) floor to cieling would be the most effective for the Diy'er but like I encountered WAF issues may rear their ugly head..
    Last edited by FTGV; 01-25-2012 at 06:20 PM.

  7. #7

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    Have not tried the triangle but have tried completely stuffed and airspace between trap and wall.

    It really depends on the room. Mine was a basement remodel that added a small recording studio room for my band at the time. The traps I used were 8' high about 2' wide or 1/2 a sheet of plywood wide.

    I used a trap on opposing corners of the room 25x35 facing each other so to speak. The one near my drum set was the one I tried both ways. Airspace gap helped calm some of the boom and warble you can get from guitar and bass amps but it left a lot of errant bass notes floating. No good for recording so we tried it filled and it seemed to be almost as good as the airspace for trapping boom but it almost eliminated the errant bass in the air. Sorry I don't know how to explain this stuff in a professional way but I hope you get the jist of my post.

    We used the light and fluffy stuff. Tried 703 in the studio and it didn't work. I have used it for my HT setup in my old house 17x20 room and it worked quite well but not for very higher pressure levels. It just couldn't absorb enough sound. It could probably have used to be bigger but the room and aesthetics WAF limited the size we used. The HT living room one was 7' by 1' wide.
    Quote Originally Posted by Timothy Smith View Post
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