So I could only find that sub as a DVC 2ohm sub, (2500w that you bought for $100). It should be wired up as 1ohm, and I don't think JL audio makes a 1ohm 1000w amp. (@ 2ohms, yes, but I don't think their amps do 1 ohm).
Of course you don't want to hear it, but the more likely scenario is you...