Hey all, I just bought a kicker s15l74 sub. 15 inch L7 with dual 4 ohm voice coils. I am obviously out to get the loudest best sounding bass. Just looking for tips on box and port size. Kicker recomends 3-6 cubic feet for a ported box. I am going to make it myself. A box from kicker is crazy expensive and an ebay box is just crap. any tips would be appreciated. THANKS 