I myself have heard a rear center channel ala 6.1, and I noticed that if I didn't turn my head around, I really couldn't figure out that the sound was coming directly behind me. It varied and was not consistent. I understand that rear surround speakers ala 7.1 are a better way to present a rear center channel. Here is my question: If you had a 6.1 receiver which had 6 amplifier channels, including the rear-center/back-surrounds, could you somehow use 2 speakers instead of the one speaker for the rear center? Here is how I would propose to do it; 1)OK, first and most effective way would be to take the rear center or rear surround pre-out and connect it using a Y-cable to a stereo amp or a pair of mono amps and then connect your 2 speakers accordingly. This of course requires external amplification. 2) Wire 2 speakers to the one channel. If you have 8 ohm speakers, you could try running parallel. If you had 6 or 4 ohm speakers, you could try running in series? Is # 2 a bad idea? Too risky depending on the receiver? Has anyone done either of the above?