3 cu.ft. ported box (L-shaped port) tuned to 30 Hz built specifically for dual 10" type-r DVC 4ohm's. Box is not carpeted due to lack of time before i left for college. comes with JBL BP600.1 amp and all wiring for the set. Box is amazing sound quality but gets VERY loud, built extremely strong and its air tight. Getting rid of so i can get a set of rims for the bimmer. Close to $500 spend on this set-up but willing to let go for $325 + shipping for everything i listed. If that doesnt sound right hit me up with offers.