I have an Optoma UHZ50 Projector and I just realized it has an HDMI ARC port (HDMI 1). I plugged the Apple TV into HDMI 2, and ran a new HDMI cable (this one from Amazon) from HDMI 1 (HDMI ARC) to the Sonos Amp, and there is no audio coming through. I made sure the Optoma “Audio Mode” is set to the “SPDIF/eARC” option, and I did the “TV Setup” on the Sonos app for the Amp and it says it was successful / “done” - but there’s no audio. Is there some other setting I could be missing on the Sonos?
In the Apple TV there’s an option to select a “temporary audio source” and when I do, I can select “Living Room” which is the name of my Sonos room, but I have a feeling that’s sending the audio via Bluetooth or something, because when I switch to the Fire TV it doesn’t work at all, and I don’t think the device should be selecting the audio output source - the projector should just be outputting the audio directly via the HDMI ARC, right? Am I missing something obvious here?
Best answer by Jorge BView original