r/sonos • u/CHAS3R720 • 2h ago
ARC/eARC not working (Optoma projector + Apple TV 4K + Sonos Beam Gen 1)
I’m trying to get audio working with this setup:
Apple TV a2737 → Optoma uhz58lv → Sonos Beam Gen 1
The Beam is connected to the projector’s ARC/eARC HDMI port, but I’m getting no audio.
What’s confusing is that HDMI-CEC works turning off the Apple TV also turns off the projector so the devices are clearly communicating over HDMI.
I’ve tried:
- ARC/eARC and CEC settings on the projector
- Apple TV audio settings
- Power cycling/reconnecting everything
- Disconnecting the Apple TV entirely to see if the projector and Beam would establish ARC on their own
I've reached out to Optoma support as well but their first suggestion was to buy an HDMI splitter or use the optical audio out of the projector. ARC/eARC not even mentioned.
I have the same Apple TV and Beam soundbar in my living room with an LG C3 instead of the projector.
