Just found out that only one of my subs was on. Checked it with my DMM and it read 4.xx ohms, meaning my amp was only doing 750 WRMS on the one sub, while the other basically was acting like a passive radiator. Pulled the subs out and one of the jumper wires had came out. That sub read O.L. while the other was 4.something. So i figure if I had both subs running on the full 1500 I should be closer to 140 right?