Guys, I have a Kenwood KAC 606 amp (not sure the watts ~150 maybe) running one JL 10" sub, I think it's the W0 model but not sure. The sub is facing the cabin through the ski pass (so you can see the JL logo from inside the car) My question is, if I upgrade to a better sub and keep everything else the same will it make a difference? I want more bass but would rather not get a new amp unless I have to. If I get a better sub is it going to give me more bass? What kind of sub do you recommend me buying, thanks for any help.