Hi, everyone This is my first posting in this forum and I am glad to do it. I have a 7.1 all-Mirage speaker set-up (M3-si Front L,R + M5-si Surr L,R + OM-C2 Front Center & Back Surround), used with a Denon AVC-A1SE AV amp and separate power amplifiers (the Denon is used as an AV Pre/Pro). The set...