What sub can get loud in not alot of space? Right now ive got a treo ssx 15'' in 3.5 cu ft. in my truck. Im going to get a new box because the boxi have right now isnt a truck box and takes up tons of space. I barely have any leg room. Can the treo get loud in a truck box as well or should I go with something else? I love it as it is right now but I cannot keep it as a daily driver with 0 leg room. my knees hit the dash...