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port length

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=116581
Printed Date: May 17, 2024 at 9:48 PM


Topic: port length

Posted By: dub805
Subject: port length
Date Posted: September 28, 2009 at 1:34 AM

Hello. Quick question that I hope the savy box builders may know out there. I am an amateur enclosure builder and I am working on my own little project right now. My previous setup (using WinISD) required that my DVC 12 have a 2.44 cu ft box with two 4" diameter by 14 inch long ported tubes. I am currently in the process of trying to figure out an equivalent or what is needed to turn this tube port box into a slot port box because I feel that it sounds cleaner. So my ultimate question is what will be my necessary L,W,H be of my slot ported enclosure in order to keep it to the somewhat equivalent of the tube ported specs above. Thank you ahead of time.



Replies:

Posted By: aznboi3644
Date Posted: September 28, 2009 at 5:29 PM
port area is port area is port area

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Custom Enclosure Design




Posted By: soundnsecurity
Date Posted: September 28, 2009 at 5:43 PM

actually it would change the tunning of the port if you just combined both of your 4" round ports into one slot port.  even though the overall port volume is the same, the tunning changes based on the number of ports that you have.

what i would do is find out what your round ports are tuned to and figure up a slot port to be tuned the same and build your new box around that.

a slot port 2 x 12 x 25 (W,H,L) should give you around a 30hz tunning frequency in your 2.44^3ft box



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Posted By: whiterob
Date Posted: September 28, 2009 at 6:28 PM
Use this to help you figure out the dimensions.

Why don't you use WinISD to help you design this enclosure? It has the ability to calculate slot ports.





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