dimentions for a 15" brahma ported box

[DbRufus1234]

ok i am gonna build a ported box for a 15" brahma and i need to know how many cu ft it should be and the dimentions of the box and how many and how long the ports should be?

[Trixter]

My box is 4.5cu' and tuned to 38Hz w/ 2 4" Precision/aero ports. I use 3/4" and braced the hell out of it. The external dimensions are 16"T x 30.25"L x 22.5"D. If you want some more info. on it email me and I will get you some diagrams.
trixprod@tds.net