Hm, maybe I wasn't clear or just didn't understand whay you wrote.
I currently have a 5.1 setup using the 7100 amp. I plan on adding one speaker (unfortunatly don't have room for a 7.1) in the middle of my rear surrounds. So for that one rear middle channel, which output should I use?
I looked at the manual of the 970 and it had it explained for 7.1 but not 6.1.
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Onkyo PR-SC886 (Retired Outlaw 970)
Outlaw 7100
Outlaw 200 Monoblock x2
M&K 851 for L/C/R
Axiom QS8 for SL/SR/1SB
SVS Pb12-ISD/2 (x2)
Sony VPL-HW15 (Retired Infocus 7205)
Sony PS3 / Pioneer DV-533