Recently I just had a kicker 12" DVC CompR with a kicker dx series 1200w amp installed. The problem I'm having is the I listen to a good bit of rock/metal and the "kick" or "thump" sound of the bass drum is really muffled and hard to distinguish. I've spoke to a few people and they said that the muffled noise comes from the seats but even with the seats down, the response still isn't quite that great. Other music with lots of bass like rap or dub step sounds good, lots of bass. I don't know if it's the brand, woofer, amp, box or if all 4 are the problem. I own a 2015 VW Jetta and there is like 15 cubic feet of room in the trunk. Help?!