In the McMaster-Carr catalog, there's a lot of sound deadening materials. Most of it would be ruined by water (such as melamine foam), but there are some things that would be alright... Hell, even the melamine foam would prolly be alright if you could keep water off of it.
A lot of people on the SPCR forums swear by the stuff McMaster sells. Of course, they're silencing computers, not cars....
Anyway, just throwing out ideas. A lot of the SPCR folks use AcoustiPack, which is hella expensive (lining a computer case with it would run about 90 bucks). It does have the benefit of a sound blocker AND a sound absorber combined, though.
Here's a page from the McMaster online catalog:
A lot of people on the SPCR forums swear by the stuff McMaster sells. Of course, they're silencing computers, not cars....
Anyway, just throwing out ideas. A lot of the SPCR folks use AcoustiPack, which is hella expensive (lining a computer case with it would run about 90 bucks). It does have the benefit of a sound blocker AND a sound absorber combined, though.
Here's a page from the McMaster online catalog:
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