Originally posted by KnuKonceptz:
We do it all the time at work, NOT at 1 ohm though, building may burn down with that kind of current running. If you tune the box lower you can get more xmax out of the woofers, moving more air makes for higher dbs. Too much xmax and the woofer wil bottom for sure with that kind of voltage.
This doesnt work everytime, my box was tuned to 26 and was loudest at 55hz, you'd also have to figure in the response of the car or home for that matter 
Normally when you use a large box and tune it to about 45 hz, you get a huge spike in the response. Sometimes on the order of 10-13 dB. Without cabin gain, it's always easier to reach high SPLs in the upper bass freq. Cabin gain confuses the issue as to where the biggest boost is.
So, I take it you haven't been able to find anything to best 15,000 watts from an amp, huh?
