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information on Ports

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=15878
Printed Date: July 15, 2025 at 9:02 PM


Topic: information on Ports

Posted By: 1badmazda
Subject: information on Ports
Date Posted: July 04, 2003 at 9:43 PM

This is for any box building guru's

I have a question on ports. I want to make square ports(ducts) instead of rounds ones. I know the formula on making the ports. Pie r square is the formula and if you plug in a 4 in port you will get a area of 12.56. So will the ports be 1 by 12.56 and the length or can you make it 2 by 12.56 or does it have to be 2 by 6.28. Next question is instead of using 2 ports for 2 subs can I combined the ports, if so what will the dimension be with my current question.



Replies:

Posted By: bberman1
Date Posted: July 05, 2003 at 3:10 PM

1) You would need (2) ports each 2 X 6.28
2) I would not suggest doing so

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