It looks like the default setting on the "surround BACK" connect is for zone 2, so in order to change/add this to implement 7.1, one must change the "Amp Assign" to 7.1 in the options from what I'm reading in the D-Manual (It doesn't appear that the "surround only" setting allows music in 5.1). I gather that means you need to run the speakers from the surround BACK connects as if you were setup in 7.1, even though you may only be in 5.1. I may/may not have answered my own question but would like to confirm it with any of you Denon owners who are enjoying surround sound from your cd's.
