port sizing

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=53021
Printed Date: May 11, 2025 at 11:55 PM

Topic: port sizing

Posted By: n8 d o dubz
Subject: port sizing
Date Posted: April 01, 2005 at 8:33 PM

i was wondering if any one had any good sites to help me calculate and tune ports for 2 15" type rs in 1" mdf box with 2 slot ports. or if any one has a similiar setup?

Replies:

Posted By: astro88
Date Posted: April 01, 2005 at 9:04 PM

How about this site? look to youre left

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Posted By: AJRXtreme
Date Posted: April 01, 2005 at 9:10 PM

I had the same problem. I downloaded a free software called WinISD pro. All you have to do is fill in all the parameters about your sub and u set the box volume and tuning frequency and it gives u the port size. If u have any questions PM me and ill be glad to answer any.

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03 F150 on 24's
HU:Pioneer DVD5700
Frt:MC57
Subs:(12)S12L7
Amps:(3)KX2500.1's, MC-2004

Posted By: n8 d o dubz
Date Posted: April 01, 2005 at 10:58 PM

this site didnt really help much for slot ports thank you though, where can i find this program??

Posted By: n8 d o dubz
Date Posted: April 01, 2005 at 11:06 PM

hmmm if i take the total area of the port opening for a slot and figure out the diameter as if my slot was a circle using the formula for circle area will that work?

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