I have an older Denon AVR-485 (probably 20 years or more) receiver connected to a Connect (also “old” - from the early generations of Sonos). The problem I have is when I play from that Connect into the receiver. The music will start but on a regular basis, it will cut out (usually within 10-20 seconds). Sometimes it will go back-and-forth. Sometimes it will stop playing entirely.
The Sonos app shows that music is playing. And if I group a couple rooms, music will continue playing in the other rooms. I have even swapped Sonos Connect devices - I get the same effect on the receiver. The other room plays fine with the Connect, but the room with my Denon cuts out.
I’m connected via the analog out cables into the receiver. It doesn’t seem to matter which receiver input I use (I’ve just switched again, and get the same effect). I’ve tried changing the line out from Variable, to Fixed, to Pass Through - all with the same effect. The one “difference” with this unit location is that it has been the base station for my Sonos. I have it connected directly to my router via ethernet cable. The other Sonos units are all using wireless.
This seems to suggest that the problem is the Denon AVR-485. The thing is, I also have our TV and DVD player connected. And have had other devices connected to the receiver as well in the past (different CD players, DVD players, DVR, VCR, tape deck, etc). None of these have ever demonstrated an issue with the sound dropping.
Any suggestions on changing settings in the Sonos or the Denon?