sub displacement
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=30195
Printed Date: July 12, 2025 at 3:16 PM
Topic: sub displacement
Posted By: Ketel22
Subject: sub displacement
Date Posted: April 11, 2004 at 8:05 PM
how do you determine the displacement of a sub, i work hard and long to forget my goemetry so please help me. ------------- Quad L Handyman services
Replies:
Posted By: stevdart
Date Posted: April 11, 2004 at 8:11 PM
Check the manufacturer's specs. I read that a standard for 12's was .07 but today's subs are .85 and larger. What's the sub, Ketel, or are you working on a hypothetical setup?
Posted By: irhino2
Date Posted: April 11, 2004 at 9:35 PM
The manufacturer of the sub should supply what the recommended air space is. Once you know what the recommended space is, you can find it by mutiplying the width, length, and the height of the internal dimensions.
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Posted By: Ketel22
Date Posted: April 11, 2004 at 9:53 PM
i was looking for a kappa perfect 12.1dvc for a friend who wants to build his own box.
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Quad L Handyman services
Posted By: audiokid1
Date Posted: April 11, 2004 at 10:59 PM
81.94 square inches for that particular sub
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Posted By: stevdart
Date Posted: April 12, 2004 at 5:30 AM
square inches?? If that was a typo and meant cubed, it would equal .047cu.ft. That's a small 10. Like I said, a 12 is .07, .085 cubic feet. Check the manufacturer for exact displacement. They most likely find out displacement the easiest and most accurate way...that is, actually displace a liquid instead of air and then measure the remaining liquid after the speaker was set in place.
Posted By: audiokid1
Date Posted: April 12, 2004 at 9:57 AM
My bad, I misread I thought you were asking for the drivers cone area. Not sure what the hell I was thinking.
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