Most subwoofers can be connected via RCA cable and speaker wire. If you turn the LFE off on you amplifier and enable the crossover on the sub, you can run RCA cable from the front speaker preouts (if you have the front speakers designated as large), and simultaneously run speaker wires from the front speakers on the amp. If efect you subwoofer is getting bass signal from the RCA inputs and the speakers. I haven't tried this, but I was wondering if anyone has toyed with this type of connection and whether they saw any improvement in bass response. It may sound a little crazy but it's an interesting thought.