Connecting a Dolby Atmos soundbar to an older TV - will optical or HDMI ARC from the TV give met Atmos sound?


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I am considering getting a Dolby Atmos soundbar. I have limited space and budget, and I have read good reviews on several models that meet my value/price ratio.

Specifically, I'm looking at the LG SN7Y.

I also have a 5 year old LG TV. It supports HDMI ARC and optical out, and Dolby Vision (and earlier version, not supported by Xbox).

I also have an Xbox One X, an older Roku Ultra, and a Switch.


So here's my question...

Can I get Atmos to work by using the optical passthru from the TV to the soundbar?


I have read that devices must be plugged directly into the soundbar for Atmos tow work, and that wouldn't be much of an issue because only my Xbox supports Atmos. But I would prefer to keep the wiring simple; plug everything into the TV, plug the TV into the soundbar. So if I get other devices that support Atmos in the future (assuming I keep the TV for another 5 years), that I will have enough inputs.

I have searched the Google and the forums here, but could not find a direct answer to my question.



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