big amp, beautiful results without pushing the amp too hard. rather than worry about how much power the coil will handle, get the big amp and have a professional set the gains based on the material you listen to. This way you will neither mechanically hurt the sub nor thermally kill it. At that point, based on your enclosure's limits with that sub coupled to it in that particular vehicle.....it would not matter what power you were actually getting to the sub, just that it's doing the best it can without electroacousticalmasochism. that's German for: subwoofer suicidal tendencies/practices.