I just got 2 Memphis power reference 15's in a ported box. I was looking at their site and they recommend 250 watts RMS. The amp I have in there is a Arc Audio KAR 900.1D. The box says:
RMS Power Bridged @4 ohms 1x 900 watts
RMS Power @ 2 ohms 1x650
RMS Power @ 4 ohms 1x400
I have it hooked up at 2 ohms and it is barely moving the sub. I had 1 12 before and that was louder. I figure I need a better amp, so any suggestions
And what other things would be smart to do? Batteries, alternator, etc.