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View Full Version : will someone tell me how big to make my ports?



twistedmind
07-28-2008, 09:44 PM
internal box volume

2.314 cubic feet

this is including sub and bracing displacment, it is NOT including port displacment

I want to end up with 32 hertz

and I am going to probably need to run 2 ports because of the way the box is designed.


FI recommends 12-16 inches of vent per cubic foot of volume.

I was thinking 2 ports with 4.5 X 6.5 OD, how long would they each need to be to get to 32 hertz?

It is going to have to be fabricated in a square L7 style. I don't have a MDF wall to make a side from.


Thank you in advance for any help.

twistedmind
07-28-2008, 10:03 PM
box is 6x30 inches on top where the port or ports will go, and 21" H outside measurments.

bottom is 11 X 30

9seconlives
07-29-2008, 01:08 AM
It would be easier to see a pic/drawing of the box and if you in or near houston then hit me up and we'll get you rockin bro....

twistedmind
07-29-2008, 06:29 AM
It would be easier to see a pic/drawing of the box and if you in or near houston then hit me up and we'll get you rockin bro....

corpus christi sadly, ill get a pic up tonight

twistedmind
07-29-2008, 09:53 PM
http://www.aww-kittah-aww.com/up/files/1089/install%20153.jpg http://www.aww-kittah-aww.com/up/files/1089/install%20154.jpg http://www.aww-kittah-aww.com/up/files/1089/install%20155.jpg

twistedmind
07-29-2008, 10:03 PM
http://www.aww-kittah-aww.com/up/files/1089/measurmeens.JPG

Techchild
07-29-2008, 11:30 PM
Thats what I used :)

http://www.carstereo.com/help/Articles.cfm?id=31

twistedmind
07-29-2008, 11:32 PM
im coming up with 4x6x23 ID, can anyone verify this for me?

should be 32 hertz

edit: or would 4x7x24 be better? box is only 28.5 long on the inside where want my port


whats the difference between a slot port and a square port because the difference in length is 5 inches