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Old 12th December 2007   #9
Clueless
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Joined: Feb 2004
Location: Chapel Hill, NC
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IAC Doors: STC from 43 to 64 (!)

Here's the product sheet that describes the doors we plan to use. We're going for 3.5" thick doors with an STC of 51-54.

You can see how dramatically the soundproofing drops at 125Hz and below...
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