lawl, everybody does that.
Anyways, to the people dissing this setup, are you really that fucking retarded?
Do you have ANY idea of the amount of work it takes to make a vehicle play music at 157+ db for 30 seconds straight?
Look at all the big bassracers and see what they run. Lots of subs, not a TON of power per sub, and a good setup. Why not a lot of power? Because with bassrace you have ties and multiple rounds. Multiple runs=lots of heat. Lots of heat=bad for woofers.
Sure, somebody could stroll in and probably do a 157 with 2 15's in a wall on asstons of power, but what happens if somebody ties him? Then ties him again? While the assclown that was trying to be a badass by using 2 15's is picking pieces of copper out of the gap after toasting his subs, the guy who beat him will be driving away slamming on his setup all day long.
Get a clue you assbags.