I am getting an 15 inch XXX with the Hifonics 1500..i hear thats a good one for that sub...i need some1 to build me a box that really nos what there doin..this would be the biggest box som1 could make for me...15 and 1/2 is the height...the width is 34 inches and the length is 18 and a half inches...is that a good size box for the XXX or would smaller be better.i want ported of course...i have money and i hear lone ranger makes boxs...i dunno help me out