I have My sonos arc connected to my TV which in turn is connected to my Sonos amp. When the TV is outputting anything other than Dolby surround I do not get any audio out of the ceiling speakers connected to the amp.
The sound is only coming from the Arc. On any other system if you are not listening to Dolby output then you still get audio out of the rear speakers albeit only stereo.
Is there something wrong with my setup?