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Ported boxes port

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=16103
Printed Date: July 29, 2025 at 3:11 PM


Topic: Ported boxes port

Posted By: TremaineG
Subject: Ported boxes port
Date Posted: July 09, 2003 at 5:55 PM

Does the length of the port effect the frequency of the bass. If I was to have a long port will my bass be deeper? Does anybody know the airspace of a Alpine Type R 15" Ported?

Tremaine



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Tremaine



Replies:

Posted By: Chuck_Hawkins
Date Posted: July 09, 2003 at 6:08 PM

yes, as does the opening diameter of the port. there are several port length calculators available online. also taken into account are the box dimensions and speaker specifications.

this is one that i use, it seems to work well most of the time:

https://www.mhsoft.nl/PortLength.asp

Chuck




Posted By: esmith69
Date Posted: July 09, 2003 at 9:09 PM

The internal volume for the recommended ported enclosure for this subwoofer is 2.25 cu. ft.;  also, a port 4" in diameter and 10" long should be used.



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Ethan
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"Patience, persistence, and perspiration make an unbeatable combination for success"
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