I already have the 1500d. Either I run the L7-4 in 2 ohms giving it 1000 or L7-2 w/ 1500watts. Hifonics not doing well in 2 ohms,, hmmm. And L7 blowing up with that much power. Tough dilemma.Do you already have the bx1500d? if not you should go with the bx1000d and run at 1 Ohm with the 2 Ohm dvc sub.
and Im not sure if the hifonics amps run well at 2 Ohms...