How to calculatevol.- with braces and sub

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=17687
Printed Date: July 23, 2025 at 9:46 AM

Topic: How to calculatevol.- with braces and sub

Posted By: fishing
Subject: How to calculatevol.- with braces and sub
Date Posted: August 16, 2003 at 7:38 PM

When building a box for two subs (enclosed) JL 12w3v2 x 2 . How do I include the dissplacement of bracing and sub housing? How do I measure this? I.E.>sub housing equals an extra inch in box length, height, or depth? Also when building one box for two subs should you include a partion between them? If you dont then wont it be like haveing twice the air space for one sub? Or will two subs counter act each others air volume, and act like one?

ps- Does it show that im a newbie? Sorry if this is to basic or simple for most, but I don't want to wast money or get frustated buy screwing something up because I didn't ask.

Thanks again for any help!!!

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12 volt rules

Replies:

Posted By: DYohn
Date Posted: August 17, 2003 at 9:10 AM

Read this tutorial and I think it will help you with your question. Cheers!

Posted By: fishing
Date Posted: August 17, 2003 at 9:09 PM

Thanks for the tutorial. It really helped!!

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12 volt rules

Posted By: bryceyaworsky
Date Posted: August 17, 2003 at 10:56 PM

I'm not experienced with JL subs, but you should check to make sure that the sub displacement hasn't been included if you're going by the specs provided by JL for enclosure size. For example, Kicker includes the woofer displacement with their enclosure recommendations for the solo-baric. .88-2 cu. ft sealed means just that. I almost made it too big when designing my box, but when I read the manual carefully I realized this.