The single handedly strongest, most powerful, most bad assed subwoofers ever created in all existance of car audio, hands down, ever, by Cerwin Vega.
The original Stroker
line was designed to do 2 things only,
play extremely loud, and extremely low.
They weren't pretty, but looked tough, and
played tougher. Most importantly, they would win and obliterate the competition in virtually any and all SPL contests they were entered in.
More recent lines of the Stroker have been upgraded with modern conviences. They are prettier, handle insane more amounts of
power, and are probably bullet proof!
On top of still playing extremely loud and low, They will now also cause earthquakes; and will also perform kidney
stone lithotripsy.
I had kidney
stones, and couldn't afford to go to the dr to get the ultrasound done to remove them. So I went to my buddies house and stood next to his stroker at full
blast. In the process I went deaf, and the neighbors house got leveled, but my kidney
stones went bye bye.