mine was at "autorama" i dont knwo if you guys ever heard of that car show before, but there was a van there i dont know anything about subs at the time so i had no idea what they were but i know it was just loud..
he took all the seats up and put subs infront of the car, and back of the trunk of the van (with all that room) he loaded it with amps.. the guy that was next to it talking aobut the van said it had only 100,000 watts.. when it was on the whole plan was shaking.. you can feel it on your feet while you were walking