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Old 17th July 2009   #6
jwl
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Ultratouch is great, but it's ugly. It's really floppy (much more so than even rockwool) and you won't get nice, neat edges on yoru traps if you use it. Best use for Ultratouch is to stack it in corners, and build a false front like a giant speaker grille to cover your bass trap.

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2. If you don't want to open your walls (or don't want to spend as much money)... I would suggest putting some acoustic foam underneath and behind your monitors... the reason is that bass frequencies are especially prone to "latching" onto surfaces such as your desk or walls. They travel through those surfaces and into the walls where the air pockets inside the walls amplify the sound and it's heard on the other side clear as day. Putting open-cell acoustic foam under and behind your monitors will help keep those bass frequencies in the air and directed towards your ears.
I'm curious about these claims. What do you mean that bass frequencies "latch" onto surfaces such as a desk or a wall? What you are describing sounds more like sympathetic resonance to me, such as in a 3-leaf system. Is this what you mean?

If so, I'm not sure open-celled foam, or even the better-performing fiberglass, ultratouch, or rockwool, will help much in terms of stopping sound from going through a wall. All of these materials are velocity absorbers; in order to work as absorbers the sound must pass through the material.

Can you clarify what you mean? I must be missing something....
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