I looked at the Orion 1200D, It costs almost the same as the JL but has less power at 4Ohms, I would like to run at 4 ohms for better SQ. The 500/1 runs at 500 watts RMS @ 1.5 - 4 ohms at anywhere between 11.5V - 14.5V, the orion only runs 425 Watts RMS @ 4 ohms and I'm sure thats at 14.5V...