View Full Version : porting? is there a formula?

12-08-2005, 09:03 PM
anyone be able to give me something like a formula to tuning boxes. like how i would figure in the lenght,width,height, and sub freq. to come up with a port size, or length. if u need specs, say a box for my MTX 5500 thunder sub. 6.7 mount depth, and a box width 14 1/4, length 20 1/2, height 14 inches. total of around cubic ft. and 38 Hz reccomended tuning. (that internal volume, not including the 3/4 wood)

12-08-2005, 09:12 PM

12-09-2005, 12:41 PM
There is no formula ...

sure everyone just takes a guess at it then uh

the jl audio site has the formula and and you can even find websites with a calc that will figure it for you but there not alway very acuarate so you should try

winisd or what ever that program is

12-09-2005, 12:46 PM

Might help I dont know..

www.bcae1.com (http://www.bcae1.com)

12-09-2005, 01:23 PM
there is most definately a formula, i'm thinking Jmac was being sarcastic... completely out of character i know...

12-09-2005, 02:05 PM
^^yeah i know...

Sarcasm is fun

12-09-2005, 02:08 PM
JL Audio has a lot of good tutorials. if you are new at anything they most likely have information for ya.