I have been watching a debate over center channel versus no center channel. I recently moved from PSB Stratus Silvers w/C6 center to Martin Logan Aerius w/o a center channel (just for the record, this sounds much better than the PSB running the center, who would've thunk it!). I now have a question...If I used a 5 channel amp, such as a cinema grande, and did not use the center channel output for a center speaker, could I use this channel to power a sub (SVS 20-39). If my processor will allow me to change the crossover point @ 80/120/150Hz (it is a Pioneer VSX-29TX). I might change to an actual processor, instead of a receiver later on.