HDMI Audio Return Channel

I have all my source devices (TiVo, Roku, Blu-ray player) connected to my Denon AVR-791 via HDMI 1.4a cables, and a single HDMI cable goes to my Panasonic TC-P50VT25 television. If I use the Internet apps on the TV, I cannot hear any sound. How should I set up the AVR and cables to get sound from the TV to my speakers? I have the onboard speakers disabled, of course, and if I turn them on, the sound does work. I don't know if the AVR can take audio back over the HDMI cable through the HDMI output port.

I ask because the Netflix app on the TV is pretty good. I thought the same version would be on the matching Panasonic 3D Blu-ray player, but it's not. Right now, we use the version on the TiVo or Roku.

Paul Wurster

Fortunately for you, the AVR-791 and VT25 both support a feature of HDMI 1.4 called Audio Return Channel (ARC), which lets the TV send audio back to the receiver along the HDMI cable that connects them (depicted above in the upper left; think of the "built-in tuner" as the online apps). However, this feature is disabled in the AVR by default. To enable it, you must go into the AVR's HDMI Setup menu and set HDMI Control to On. Also, only the TV's HDMI 1 input has this feature, so be sure to connect that input to the AVR's HDMI output.

For those who don't have a TV and AVR with ARC, you would need to connect an optical digital-audio cable from the TV's digital-audio output to a corresponding input on the AVR, as depicted above in the lower right. Then, when you want to watch Netflix using the TV's app, simply select that input on the AVR.

Your query points out an important but little discussed issue with online apps—the apps for a given service aren't the same from one device to the next, even from the same manufacturer. For example, the Netflix app on the VT25 is different than the one on the Panasonic Blu-ray player you got.

If you have an A/V question, please send it to askscottwilkinson@gmail.com.

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brother's picture

I heard you read this one on the Tech Guy Show. This all came up because my wife specifically likes the interface of the app on the TV. It allows you to search and add to your queue where the Tivo interface does not. We used to use the Roku for everything before getting the tv and Tivo, but now it is ready to get passed on to someone without access to Netfllix streaming.

Thank you for all the help and the recommendations. I used this site for the majority of my research before buying my current setup. The Panasonic VT25 is still the best television I have seen of the current crop.

Now I need to go and program this new configuration into my Harmony One remote. I hope you are getting a commission from these companies.


brother's picture

Sorry Scott. This did not end up working out. It does work exactly as you explained; however, the sound no longer works when switching to other inputs. I have to turn the ARC off again. Of course I could program this macro into the remote, but it isn't worth it.

I would love an explanation if you now why?

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