10 inch sub box port lenght

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=111862
Printed Date: May 03, 2025 at 12:17 AM

Topic: 10 inch sub box port lenght

Posted By: dred
Subject: 10 inch sub box port lenght
Date Posted: February 23, 2009 at 12:38 PM

hey i would like to know the maximum port lenght for my Pioneer tws 256 800watt 350 rms subwoofer. 1.CF BOX

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dre

Replies:

Posted By: dred
Date Posted: February 23, 2009 at 12:40 PM

sorry its 1.5 CF box but give me the maximum port lenght for a 1.0 C.F box and 1.5 cf box thanks

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dre

Posted By: j.reed
Date Posted: February 23, 2009 at 12:52 PM

what FB are you looking? Box dimentions would help to figure port area.

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Posted By: dred
Date Posted: February 23, 2009 at 1:09 PM

the height of the box is 12inch width 18 and lenght 16. Fb i have no idea

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dre

Posted By: j.reed
Date Posted: February 23, 2009 at 1:22 PM

dred] wrote:

the height of the box is 12inch width 18 and lenght 16. Fb i have no idea

FB is your resonant frequency of the box. refered to as tune of the box. It along with sub and size of box will dictate the output of your sub.

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Posted By: soundnsecurity
Date Posted: February 23, 2009 at 11:25 PM

well, what kind of sound are you trying to get out of a ported box? are you going for loud or are you wanting a nice low tone and frequency response? in general, the longer you make the port the lower it will be tuned to, and the lower the frequency response will be, however it wont be as loud, but it will sound better on low notes. if you make the port too short the sub will sound like it is just flopping around it the box when it plays really low notes but it will be louder on the higher notes.

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