ok its a DC lv4 12" sub running off a 4kw mojo the amp is a tank it makes great power even though its only getting 12.3v when im shut off, you blew up 2 subs with a 3000w rockford? which subs? hahah cause ive ran 5 different subs off this amp and have yet to blow one of them, and they have all been wired at 1 ohm. and i use the mojo and the DC daily with out a problem, i did not blow the sub the dust cap came off... BIG DIFFERENCE. Then again i know what im doing, and based on what you come here to get answers for you dont. so thats makes all the difference in the world.

As for all this underrated shit you keep talking... nothing is under rated these days... the mojo with 14.4v will make 4000RMS@1ohm, and it can be wired down to 0.25 ohm and used daily if you have the voltage to support it, the amp is also capable of running off a 16v system with out modification. do that with your rockford and see what happens hahaha