The Punch 360.2 DOES NOT have high level inputs!!! I am afraid to think that whoever wired it in for you, just patched the high level sub output into the low level RCA connector on your amp without using a quality line converter like the AudioLink Powerlink ][!!!! That would cause problems So 1) DO NOT RUN THAT AMP 2 ohm mono!!! Change woofer to dual 2 ohm so you can run 4 ohm mono if necessary 2) Make sure you have a good quality line converter, crutchfield.com has the AudioLink Powerlink ][, probably the single most popular line converter ever made. 3) Make sure the CROSSOVER feature of the amplifier is TURNED OFF!!! You do not need a crossover, there is one built into the DSP amp that does awesome, two crossovers will cause more distortion and won't improve anything. So check the amp, make sure the crossover is turned off on it!