what do you guys think of this box that i designed for my XXX 15" Sub? my only question is, how can i figure out the exact tuning using the port length? i used this http://www.subwoofertools.com/forum/...&Vas=&Fs=&CE=3
to get the rought idea, then modified it, so im not sure of the exact tuning.. any help or suggestions are welcomed, oh and the box size right now is the max that will fit in the tiny trunk of my cavalier.. thanks


16.5" HEIGHT
70.25" PORT LENGTH
5.5" PORT WIDTH
3.0 CU FEET AFTER SUB DISPLACEMENT
28HZ TUNING
TOTAL SIZE: 34" X 26" X 16.5"