box volume

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=6414
Printed Date: May 18, 2024 at 9:32 PM

Topic: box volume

Posted By: markb
Subject: box volume
Date Posted: December 09, 2002 at 10:26 AM

I'm trying to squeez two 8" Cerwin Vegas into a very tight spot. They require .5 cu.ft. per woofer, and I'm making one box for them to share. The most volume I can get is about .45 cu.ft. per chamber in the space I have. Is it possible to "fool" the woofers into thinking they are in a bigger enclosure by using polyfill? If so how much?

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-Mark

Replies:

Posted By: bberman1
Date Posted: December 09, 2002 at 12:02 PM

Yes you can fool it by filling it with the Polly fill. I like to stuff the box about 50%

Posted By: NyxBass
Date Posted: December 09, 2002 at 8:16 PM

Yes, about 50% full of polyfill, or 1lb per cubic foot is another guideline. I think with that small of a difference (10%), you shluod be alright, the response will be tad bit tighter, with a little more peaked low mid response - I'dgive you a plot if I were on my machine, bt all my stuff is at home. Just expect the tuning frequency to move up a touch, and the reponse to be a little bit "peakier". But you should be just fine.

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/NyxBass

Posted By: markb
Date Posted: December 09, 2002 at 8:50 PM

thanks fellas, I'll post the results

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-Mark

Posted By: bberman1
Date Posted: December 10, 2002 at 1:14 PM

Not a problem

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