I'm thinking about picking up a used receiver to use with our 4K TV.

If I'm getting the signal via ethernet, can I then run the audio via HDMI ARC to the receiver? Or does ARC only work if the same HDMI cable is providing the signal to the TV, and then sending the audio back to the receiver?

Thanks!

HDMI ARC is a two way signal.

So anything going to the receiver can be routed to the TV.

Anything going to the TV can be routed to receiver.

EDIT: My smart TV is connected via WiFi to the Net. It is connected by HDMI ARC to my 5.1 w/Built In BluRay player. I did try turning the sound off on the 5.1 and playing thru the TV speakers. That worked as well.

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Edited 1 time(s). Last edit at 04/12/2022 11:14PM by Rolando.

So you have a smart tv with built in streaming apps, and those apps are going to access the internet via the ethernet port on your tv, then you want to output the resulting audio, via the ARC/eARC enabled HDMI port on your TV, to the receiver? I don’t know, but that’s an interesting question.

Rolando says "Yes"-I'm making an offer on this used receiver.

Thanks!

Doesn't the TV have a digital audio output? If so, why not use that?

My receiver is old enough to not have HDMI inputs. It has multiple Optical audio inputs though. I connected all my devices to my TV via HDMI. Then the TV audio outputs via optical to the receiver. This way, I can use TV audio easily and only use receiver audio when I want. Don't need to use the receiver to switch inputs.

Quote
Rolando
HDMI ARC is a two way signal.
So anything going to the receiver can be routed to the TV.
Anything going to the TV can be routed to receiver.

Yup, this is the purpose of HDMI ARC. So that any audio signal from the TV can be heard through the receiver.

Quote
macphanatic
Doesn't the TV have a digital audio output? If so, why not use that?

HDMI ARC could be more convenient, depending on how it's set up. But also, HDMI ARC has more bandwidth than digital audio outputs, for better audio formats.

Good question.
Long story short, my receiver has a digital input, but you have to set it up in the TV every time you want to use it, and that's too much for Daughter Anonymouse to deal with. HDMI is automagical. I've done it, and it works, but using it creates undue family friction.

Quote
macphanatic
Doesn't the TV have a digital audio output? If so, why not use that?

My receiver is old enough to not have HDMI inputs. It has multiple Optical audio inputs though. I connected all my devices to my TV via HDMI. Then the TV audio outputs via optical to the receiver. This way, I can use TV audio easily and only use receiver audio when I want. Don't need to use the receiver to switch inputs.