I've got the same bazooka sub. It's the same for me. It's awesome inside the car but outside you just can't hear it that much. If the windows are down you can hear it really well though. When I was picking somebody up they said they could hear me from about a 1/4 mile from inside.

You can also adjust the crossover. I've had it for almost 3 mounths and I just now got it set just right. My stock CD player skips though when it kicks hard. I also want to start fixing the rattles too. I don't have money for the dynomat. I was thinking of using bubble wrap packing stuff. Anybody know if that would help?