I have an LG CX 65" OLED TV for which I just bought a Sonos Arc. My problem is that, if I plug it in to the eARC HDMI port as recommended, I don't seem to be able to select any other sound output channel. Now you may wonder why I would want to do this and I have an answer.
I often need to be able to use headphones when watching TV late at night or when with my wife – I'm partially deaf and this allows me to enjoy watching without driving her to deafness too. However, choosing "wired headphones" or "wired headphones + internal speakers" in the audio output menu doesn't stick. It just switches back to "HDMI ARC" after a few seconds.
I have gone through every setting I can find in the iOS app from Sonos and didn't find anything helpful. I managed to make it work only by unplugging the HDMI cable from the Sonos. I haven't tried other options such as using another HDMI input – perhaps that would help?
If anyone can point me at what idiotic thing I'm doing wrong I’d be very grateful. Hopefully I haven't bought the wrong soundbar?
Thanks for listening.