Subs with Magnets out

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=55788
Printed Date: May 09, 2025 at 8:42 AM

Topic: Subs with Magnets out

Posted By: Walkercustoms
Subject: Subs with Magnets out
Date Posted: May 15, 2005 at 2:51 PM

When building a box for subs with the magnets facing out how do you determin air space? Do you still make it say 2cubic ft or less because there is not speaker displacement.

Thanks

wade

Replies:

Posted By: Alpine Guy
Date Posted: May 15, 2005 at 2:55 PM

if the sub asks for 2 cu.ft then make it exactly 2 cu.ft when inverted, , ,if mounting normally you would have to make it 2 cu.ft plus say 0.3 cu.ft to compensate for the sub displacement ending with a 2.3 cu.ft box.

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2003 Chevy Avalanche,Eclipse CD7000,Morel Elate 5,Adire Extremis,Alpine PDX-4.150, 15" TC-3000, 2 Alpine PDX-1.1000, 470Amp HO Alt.

Posted By: oonikfraleyoo
Date Posted: May 15, 2005 at 3:20 PM

What AlpineGuy said is dead on the mark. But,the change in air space for most subs will make no audible difference.

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Nik
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