Polyfill in a push/pull subwoofer? - AVS Forum
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post #1 of 8 Old 06-19-2012, 07:10 PM - Thread Starter
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I've got a couple of push pull subs and I'm thinking they would benefit from some polyfill as the enclosure isn't that big considering it has dual drivers.

Do you think this would be beneficial for this sub design? If so how would I go about filling it? Since the driver on the bottom of the cabinet is facing up inside the cabinet I'm guessing I'd want to avoid having any polyfill on top of it.

Cheers for any help.
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post #2 of 8 Old 06-19-2012, 07:21 PM
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pillows
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post #3 of 8 Old 06-19-2012, 07:56 PM - Thread Starter
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Won't pillows be detrimental since they are made of cotton and form a barrier between the enclosure and the polyfill?
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post #4 of 8 Old 06-20-2012, 12:58 AM
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Use a net to keep the polyfill from the drivers.

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post #5 of 8 Old 06-20-2012, 01:20 AM
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Quote:
Originally Posted by Mrkazador View Post

Use a net to keep the polyfill from the drivers.
What he said, or cheap cloth stapled inside to hold it in place. If you can place the cloth over your mouth/nose and breathe through it easily, it's fine.
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post #6 of 8 Old 06-20-2012, 06:21 AM
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Quote:
Originally Posted by RTSW View Post

Won't pillows be detrimental since they are made of cotton and form a barrier between the enclosure and the polyfill?
A fabric pillow cover is invisible to long wavelengths.

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post #7 of 8 Old 06-20-2012, 07:25 AM
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Originally Posted by Bill Fitzmaurice View Post

A fabric pillow cover is invisible to long wavelengths.
. . . which is why Yoda wears a pillow cover. biggrin.gif
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post #8 of 8 Old 06-20-2012, 07:25 AM - Thread Starter
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Awesome, thanks for the responses all.
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