I have the following set which has worked fine for the last 2 years
- Playbase connected via optical to Panasonic tv with 2 Sonos one’s and a sub. These are paired together in one room on the app.
- Sonos Amp connected to same TV via HDMI to ARC socket on tv. This is set up as another room on the app but is in the same physical room to the Playbase as connected to the same tv
With this setup I could have the tv audio playing through either the playbase or amp or both together and could group/ungroup on the app so no issues.
Last night, I pulled the HDMI cable out from the amp which goes into the ARC socket on the tv as I wanted to check if it was high speed. When I plugged the HDMI back into the amp, I noticed that when watching the tv, both the playbase and amp were playing at the same time. As I only wanted the tv through the playbase, I ungrouped both the playbase and amp on the app and just had the playbase playing, I then used the tv remote to adjust volume and the amp started to play. This was the same when I streamed music.
I cant understand why this is suddenly happening now. I am unsure if my setup is correct and how and if the HDMI cable from the amp needs to be plugged into the ARC socket on the tv?
Any advise would be greatly appreciated.