- Feb 14, 2003
I did try changing to 5.1 and then back to 7.1. It fixed it till I powered the system down and then up again. Also removing power from the Oppo worked temporarily. Do you mean you turned off the individual speakers or the surround setting? Problem is, I am getting the same problem connected directly to three different AVR’s. I prefer the Oppo as it’s easier to tell how many channels are being output.I've had the same mono speaker issue, but on the speaker configuration menu on my Oppo I switched my 7.1 rear back speakers off and then back on again and that seemed to fix the problem. Not sure why or how though.