“Do you HAVE to use an audio device in the ARC HDMI port? The features list shows the TV as having 3 HDMIs, which is accurate, but it wasn't made clear that one is ARC. Is there any way I'll be able to connect all three of my HDMI video devices to the TV?”
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Arc is automatic and has no effect on uses , just has ARC in number 2 , you can go to general setting and turn the HDR COLOR ON for all 3 hdmi ports and I have tried all three with cable , gaming and surround sound, but number 2 sounds better to me with surround sound system in ARC .
Sorry, there was a problem. Please try again later.All HDMI ports carry both a video and audio signal. The HDMI ARC port on the LG - 65" Class (64.5" Diag.) - LED - 2160p - Smart - 4K Ultra HD TV with High Dynamic Range - Silver, Model # 65UH7700, like any other HDMI port transfers both audio and video and also carries the 'handshake' information from one device to another. It shares more complex messages as part of the HDMI CEC (Consumer Electronics Control) that allows a single remote to control features for as many as up to 15 connected devices. With the ARC function, (Audio Return Channel), as long as both devices support that feature, you will be able to control volume, power and other features from your TV remote. In most cases, it will automatically transfer your TVs audio to your connected devices without you having to turn the TV's built-in speakers off. The other function that ARC performs is sending signals 'upstream" and "downstream" over the same HDMI cable. If your other device does not support the ARC function, then that port simply functions as a regular HDMI port would...^IFV
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