kicker l7 12 ported enclosure

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=109822
Printed Date: May 15, 2025 at 2:56 PM

Topic: kicker l7 12 ported enclosure

Posted By: kulavc3
Subject: kicker l7 12 ported enclosure
Date Posted: December 17, 2008 at 2:28 AM

Hello, I have a Kicker L7 and had a few questions on the ported enclosure.

1. I wanted to have it to have dual round ports for semetry in the trunk, and the trouble that I am getting at is the calculator on the site provides the port length for 1 port but I was wondering how to configure it so that I could have 2 ports.

2. The box is going to be ~2.75 cf and I was tuning it around 40 hertz. I was also going to use 3.75 inch dia ports

Thanks for the help and any input if this box design would have good SQ and SPL combined would be a great help

Replies:

Posted By: aznboi3644
Date Posted: December 17, 2008 at 6:20 PM

I'd drop it down to 2.5 cu ft net with two 4" diameter round ports 19" long. Tuning approx. 35Hz.

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Custom Enclosure Design

Posted By: kulavc3
Date Posted: December 18, 2008 at 6:04 PM

alright thanks that sounds great....and may I ask how did you come to the conclusion of getting to 35 Hz? How did you make your calculations for the two ports?

Posted By: aznboi3644
Date Posted: December 19, 2008 at 1:40 PM

yes I calculated the port lengths with the volume and port area. 35Hz will be a lot better all around daily than 40Hz.

and that is 2.5 cu ft NET not including port, sub, and bracing displacement.

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Custom Enclosure Design