tommyk90 5,000+ posts
THE WHOLE THING!!!
I'd like to try one heads up versus my 9512F.I disagree. I've found the sub to be alot more sensitive to music than a dd 9500. With 400 watts on one sub 140+ suprisingly efficient. I do understand what your saying though the xl is a 5 in every way except the motor. The lvl 5 really doesnt show its colors till you double the output.
Difference in coils between a 4 and 5 is thier thermal capability.
660 watts + 9512F= 149.8 outlaw (roughly 143-144 sealed on the dash)