Quote:
Originally Posted by Bigshot44
recommendations?
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I've even used the commercial Johns Manville wall insulation for some projects, more user-friendly than the old type itchy pink fiberglass. Its mainly to damp out higher frequencies that reflect and bounce around inside the box, but if it's a subwoofer, most of that is filtered out anyway with a low-pass filter.
More important is that the box not flex, and have proper bracing. If you tap on the box, or rap it with a stick, hammer, etc. and it makes a ringing sound, that's not solid enough, and needs more bracing or damping.
An exception might be that if the box rings at a very low frequency, it can add to the output and even sound pleasant. In general, though, ringing is not desirable.