Port Calculation?

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=3509
Printed Date: July 22, 2025 at 4:31 PM

Topic: Port Calculation?

Posted By: APC
Subject: Port Calculation?
Date Posted: September 10, 2002 at 5:17 PM

Hi I am building a box to house 1 Autobahn AW1208Q. The box is 3.0 cu/ft. I need to know the formula to calculate a square port? Also what is the best Hz to tune it to?

Replies:

Posted By: AW1208Q
Date Posted: September 10, 2002 at 7:19 PM

what do u plan on using your sub for?? SPL or SQ??? i am running one aw1208q in a 5.5cubicfoot box with a port depth of 8.4inchs and a surface area of 70 sq inchs. tune Hz really depends on box size, port size and distance the sub is from the mic. if u want to check out my setup go to member.cardomain.com/lovebaron

James

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