I partied with a guy while I was in high school and he showed me his system. It was I think a 95 cavalier with 4 12" kicker solo-barics (the round ones, old school!) and I could hardly breathe in it. That was like 1999. He later got 2 15" Atomics and I laughed at him and told him how stupid he was for getting rid of them, i felt kinda stupid after I got in his car!