If not, you need to set the Oppo to have all the main speakers as Large and "no sub."
4 responses Add your response
Since your Yamaha " nullifies all adjustment," I would focus on the Oppo to first make sure that you are getting signals from all the output channels.
(1) Does the FR/FL channels change/respond at all to changes in the Oppo of level and/or crossover for BM?
(2) With careful manipulation of the volume control on the Yamaha, connect the .1 output of the Oppo to the FR/FL input of the Yamaha and determine if there is a signal and/or if that signal is affected by changes (in the Oppo) of level and/or crossover for BM?
Yes the FR/FL do respond to large/small speaker selection in the Oppo.
I think I follow what you are suggesting here. The Receiver may not be receiving/ processing the (.1) subwoofer signal? I know it is not the Oppo since it has done the same thing with two different Oppo's.
I will pull interconnects the first chance I get. Thanks!