sealed sub box, 02 mustang

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=11956
Printed Date: July 15, 2025 at 9:04 PM

Topic: sealed sub box, 02 mustang

Posted By: jeffryjb
Subject: sealed sub box, 02 mustang
Date Posted: April 08, 2003 at 2:22 PM

I have a RFP3212 sub in a small box that I just had sitting around. I was going to build a new box to fit in the car better. For a sealed enclosure RF recommends a minimum of .9 cf and a maximum of 2.79 cf. That seems like a wide range, just wondering if there are advantages to be at one of those numbers, or right in the middle(1.8). Thanks.

Replies:

Posted By: bberman1
Date Posted: April 08, 2003 at 2:53 PM

.9 will give you the most spl but it won’t sound that great. 2.79 will give you the best sound quality but not a whole lot of bass. Fosgate recommends 1.25 for optimal sound which is the spec that I would go with.

Posted By: wvsquirrel
Date Posted: April 08, 2003 at 11:33 PM

Don't forget that if you build the box a little smaller like bberman1 recommended, that you can always add pollyfil to change the sound if your not happy with it. You essentially trick the subs into thinking they are in a larger enclosure by changing the soundwave (how it reverberates I mean). Run a search on "pollyfil" or "polyfil" or "insulation" on this site for more info on that if your interested

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Squirrel
"No more Cpt. Kirk chit chat"
If its too loud, then you're too old
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