Very confused about this box!

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=47295
Printed Date: May 15, 2025 at 9:16 PM

Topic: Very confused about this box!

Posted By: H2PRIX
Subject: Very confused about this box!
Date Posted: January 09, 2005 at 4:02 PM

Hey everyone,

I am trying to design this trunc. edged prism box..All the measurements seem right, but the tuning freq. seems to be way off.. I am using this program "bassbox pro 6". I want one square port to be in front 4"HvX12"Wv..

The calculator in this program says my port Length should be nearly 100"s long!!!! In order to make the frequecy 28Hz

There is no possibly way for that to happen!

The box is only gonna be in 1.5 cu. ft

thanks.

Replies:

Posted By: H2PRIX
Date Posted: January 09, 2005 at 6:04 PM

Please reply if you know anything about "bass box pro"

I really need the help,Thanks

Posted By: stevdart
Date Posted: January 09, 2005 at 7:23 PM

4 X 12 is a big opening, esp. in relationship to the small 1.5 ft enclosure. Suggest you use a vent calculator found here and get the port opening to a smaller size. The length will shrink with it.

Posted By: promodeepcycle
Date Posted: January 09, 2005 at 8:08 PM

what sub and what demensions.. i use this program daily

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dont be a pet monkey ..use your dmm

Posted By: H2PRIX
Date Posted: January 09, 2005 at 8:35 PM

Orion H212.4

h1 6in

h2 17.74in

h3 19.64in

d1 2in

d2 17.74in

w 23.02

Posted By: H2PRIX
Date Posted: January 10, 2005 at 9:57 PM

Im done constructing, the port will be 3"x3"x18.92". which will give me my "magic" tuning freq.

Posted By: stevdart
Date Posted: January 10, 2005 at 11:10 PM

Good. Glad to see the confusion is gone!

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