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Original Message

RE: Tube Bass Traps.

Posted by DragonEars on October 21, 2016 at 06:14:47:

I used the Knauf pipe insulation. It is 12" ID and 1" thick, 36" long. Capped them with 13" diameter plywood. Did not stuff them, instructions said empty air space was better. I covered mine with cotton batting (to contain fiberglas fibers) and gray muslin. Muslin is like thin soft denim.

The instructions I used claimed the Knauf pipe insulation had similar density to the ASC Tube Traps. Using the Knauf pipe insulation makes it easy, but costs a little more (US$7.47 per foot back in 2007).

The room smoothed out better then I had hoped for. My son and I took SPL readings without traps and with traps. Ten freqs (25-200hz), 7 places in room, with traps and without traps(140 readings). The SPL readings confirmed our ears. I couldn't be more pleased with this DIY tweak.