I am trying to create a phantom input on G65 for the SLS button that will be set as stereo to turn off rear speakers when listening to MQA. I have made another MC200 and set DSP presets to stereo discrere stereo discrete.

When I now select SLS on G65 it displays SLS on display but DSP stays on whatever it was before but the rear and centre do stop so it's obviously doing job. I guess it won't display stereo as there is no audio input on SL2.

One snag I think is if my Humax box is playing a genuine 5.1 output then my DSP settings above will trigger as discrete and I will still get the rears playing.

Any thoughts?

G65, HD621, 5x DSP5200SE, MC200.