Closed volume as trunk / subwoofer? Hi! My special problem: My car has a closed volume as trunk (stage rear) with non-foldable backrest with only minimal openings to the passenger compartment. I was offered a closed subwoofer with 2 x JL 10W3, which would fit exactly into the trunk. Bassreflex does not exist,only bandpass would be possible,or? Would I be able to cope with the closed system? Greetings, Martin