I have an Arc 5.1 setup with 2 x Play 1’s as rear surrounds. When watching movies with the volume up a bit, I’m getting cracking / static and popping type sounds from the Play 1 surrounds occasionally. Not sure if this is some sort of network interference issue or something else.
Diagnostic number is 2122027604 if Sonos support could be please take a look. The support email option seems to be unavailable currently.