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How much filler in ported box?

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MarkAm

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Hey guys, I just finished drilling the holes in a new enclosure for 2 Sundown SA-8v2's. I'm not sure how much or what type of material I should use for filler inside. I've read where some guys used poly fill. I'm assuming that I can get that at a local fabric store. Its going into a portrd box that is

1.5 ^3ft after displacement. Any help would be much appreciated.

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I've just read where guys use different material like Polyfill to line the inside of the enclosure to help with the sound. I take it I'm mistaken?

 
I had made a box for my 6.5 mid bass and filled with poly fil and I can barely hear it now. I may just take it out

 
A half pound per cubic foot is the norm but in a vented enclosure you don't need to fill. For vented enclosures lining the inside of the cabinet with convoluted foam or insulation can dampen back wave interference but I wouldn't bother with a subwoofer enclosure.

 
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MarkAm

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