Hi,
FWIW, I bi-amped and drove my center channel w/ channels 2 & 6, while channels 3 & 5 handled the left and right speakers (also for stereo). Channels 1 & 7 handle surround duty while channel 4 was left unused. I tried to bi-amped the front left and right channels too, but found that in a shared HT and stereo set up, the added power to the center channel yielded better results for me overall.
Regards,
Kenobi
