My receiver (Yamaha RXV795), when set mains to large, plays most of the bass to the mains rather then the sub, my sub hardly plays anything at all, and I seemed to be missing a lot from 35-60hz. My solution was this: My receiver has preouts for ALL channels, and i hooked up the sub to the left channel out and set the xover on the sub to about 50hz. Now it sounds much better. So much more power and authority yet it still blends in well with the mains. I got a rca y cable so i could hook up the sub to the LFE and L channel. Would I cause any problems by setting it up this way?