Question on Port distance to back wall

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=41750
Printed Date: July 06, 2025 at 8:11 AM

Topic: Question on Port distance to back wall

Posted By: killerbean24
Subject: Question on Port distance to back wall
Date Posted: October 27, 2004 at 12:36 PM

I am designing a box that incorporates my 2 Vega 128's using a combination of Autocad, WinISD, and BoxPlot. I have drawn what I think is the perfect box. My question is: How far from a box wall is the opening of the port inside the box supposed to be? I have heard its 3 inches from the wall, but then I would be tuned to 37 Hz instead of 35 Hz at 2 inches.

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Replies:

Posted By: DYohn
Date Posted: October 27, 2004 at 12:40 PM

Your port entrance and exit should be at least one port diameter away from any surface.

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Posted By: jeffchilcott
Date Posted: October 27, 2004 at 6:52 PM

yep I always keep the opening of the port the distance of the width of the port aray from any wall or supports or sub.

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