Speaker damping: Foam or expanding foam - diyAudio
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Old 15th September 2005, 10:39 PM   #1
akunec is offline akunec  Canada
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Default Speaker damping: Foam or expanding foam

Is foam or expanding foam suitable for speaker enclosures?
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Old 16th September 2005, 06:58 AM   #2
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open cel foam rubber can be used as damping material. Expanding foam is sometimes suggested for filling voids, but from my experience is not something i'll use again.

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Old 16th September 2005, 06:26 PM   #3
Coolin is offline Coolin  Netherlands
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Expanding foam is closed celled, so not suitable. Sound doesnt really pass through it so isnt absorbed very well.
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Old 11th February 2014, 12:37 AM   #4
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I am finding that foam is not working and polyfill is even worse. I can hold up a thick piece of foam or polyfill far thicker than you would use in a cabinet, against a speaker and you can hear right through it! So what am I supposed to do? It doesnt seem to absorb anything at all
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Old 11th February 2014, 01:14 AM   #5
Face is offline Face  United States
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Fiberglass or denim insulation.
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