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HDMI 3 on the LG BX 55 inch Class 4K Smart OLED TV w/ AI ThinQ® (54.6'' Diag), Model # OLED55BXPUA is an HDMI eARC port. If your SONOS ARC or any Soundbar that you connect to the HDMI 3 eARC port on the TV is only compatible with HDMI ARC, it's likely you'll get a sound - but the bandwidth restrictions of ARC will mean you won't be able to experience the high bitrate audio that eARC can provide. HDMI eARC is not backwards-compatible. YOu have to connect it to a device that also support HDMI eARC functionality...^IFV
Sorry, there was a problem. Please try again later.Yes, as long as you use the ARC connection. Will not work if you use Toslink.
Sorry, there was a problem. Please try again later.Yes, I use it daily. But be careful, as of July 2020 Disney+ has apparently had some issues with Atmos all together, so if problems arise there might be a 3rd party involved.
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