I know someone will assist me on this forum. I set up my Denon AVR to out 5.1 + B. That is I want to use to sets of front speakers. I have a power amp. This is the challenge, when I try to use the pre-outs so that the power amp can power the two fronts and the center, there's no sound from Speakers B. But when I connect the B speakers directly to the amp there is sound. Is it possible that the Surround back pre-outs are not working or there is something I am not getting right. I did all sorts of trouble shooting. All other preouts work fine on the power amp.
regards
regards