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D.I.Y. Bass Traps- calling acoustic techs....

I have been reading about diy bass traps but still have some questions. For me I am going to build some round tubes with fiberglass pipe wrap or Rock Wool. This is avail locally in 3 ft sections and 12 in diameter with a 2 in thick wall. The paper cover can be removed and wrapped with cloth. The ends can be glued on with mdf or plywood.
The problem I have is a 50 hz bummp. Most of what I am reading says these traps are good around 100 hz. Do you think stuffing each tube with more fiberglas insulation will make them more effective?
If so, should it be packed loose or tight?
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Showing 2 responses by blueskiespbd

blueskiespbd's avatar
blueskiespbd OP
161 posts
 
Jockey...funny you mentioned resonance. I woke up this morning and had that same thought. The bar in the corner and the wood cabinet my gear is in are both resonating like a drum!! I am going to work on those units before I go crazy on giant barrels of rock wool and fiber glass.
Upon reflection it just does not make sense that I should be getting that bump anyway. Thanks for the input. Now I need some ideas on how to get my furniture under control since I will not be able to use a heavy pro shelf in that room due to a WAF situation.
blueskiespbd's avatar
blueskiespbd OP
161 posts
 
Update: The bar has been removed and the DIY bass traps installed in the rear corners. Big, big improvement. Flat panels added and moved around with great effect to smoothing out the tweeters also accomplished. This is better than buying new components. That Rives test cd and my Radio Shack spl meter are getting a pretty good workout.
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