I found this on another site wherein a member asked Sonos to clarify the use of Sonos Home Theater speakers with a projector. It also contained a note on the Arc regarding Dolby Atmos material. Take it for what you like...just FYI. Cheers!
Ryan S2 months ago
Thanks for sharing Aj!
I saw that one on Reddit too and reached out to the agent involved, as that isn’t really the best answer and isn’t accurate on some things either. There’s nothing unsupported about projectors with the Arc.
The Sonos Arc is designed to get audio from an HDMI ARC or eARC connection, and if that’s not available, you can use the included Optical to HDMI adapter that is included.
To get Atmos content, you'll need HDMI ARC from a source that's able to pass it through, and the content that you're playing has to be in a format with Atmos audio content.
As to the original poster, he has a LG HU80KA projector which says it has an HDMI-ARC connection on HDMI 2 according to the manual, so connecting the Arc there should work. However, it doesn't specify if the projector is capable of passing Atmos content. Generally this is the sort of question best asked of the developer for the device connected to the Sonos Arc, to make sure it is compatible with an Atmos soundbar. The Sonos Arc will play any Atmos content that comes in with Dolby Digital Plus or over HDMI eARC with Dolby MAT or Dolby TrueHD.
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