in my last ride i ran 2 12" concept ss dual voice coil subs with a d class 800watt concept amp and it hit hard.then i switched to a c class 1225watt and it was not as good as the d 800 so i switched back.i had it in a 93 lowered 2 door s-10 blazer and it sounded gret in there.my brother inlaw runs the same subs only 15 inch and 4 of them and a 3000watt amp in his suburban