View Full Version : what size port

11-02-2005, 05:53 PM
i am building a box for a 12'' type r. it is going to be 2.5cu ft before sub and port displacement. I am going with a slot port tuned to 34hz. does anyone know what the sq. inches for the port area and how long the port needs to be?

11-02-2005, 06:21 PM
3" wide by how ever high you can go. you can use winisd to figure up the length and everything. i will design you complete cut by cut box plans for $10

11-02-2005, 06:24 PM
WinISD is not very accurate, btw.

11-02-2005, 06:35 PM
it is decently accurate, and i said that b/c he can can it free. i use a program i bought on ebay

11-02-2005, 06:56 PM
i was going to build two seperate boxes for my 2 type rs but now i have decided to build one box to house both. i used winISD and tuning it to 34hz it calls for 3in by 14in and 12.98 in long. does this sound right? i have never used WinISD before.

11-02-2005, 07:01 PM
use this (http://www.carstereo.com/help/Articles.cfm?id=31)

11-02-2005, 07:07 PM
i tried the caraudio slot calculator and came up with almost the exact same measurements so i guess they are pretty good