Originally Posted by mtnscott
So, I have an older receiver that does not support HDMI. Therefore I route all of my HDMI feeds into the TV and use the TV for selecting what I want to view. For example I have a DirectTV receiver, BluRay player, and an AppleTV. I was hoping the TV would just route the full digital audio from the video being viewed out of its SPDIF optical jack. The TV lets you specify PCM, Dolby, DTS for the digital audio output, however in my case it only outputs 2 channel digital audio regardless of the input audio coming from the HDMI input source. I know this because when I directly connect the DirectTV digital audio to the receiver I get 5.1, when I connect it via the TV I get only two channels from the 5.1. I've seen this with the built in Netflix and Hulu apps as well. I even tried connecting a USB drive with .mp4 video that I know has an 5.1 dolby track however still only 2 channel audio out of the TV.
Are you sure you are getting 5.1 audio? I am running the current firmware in the TV, it automatically downloaded an update and at the same time trashed the WiFi (it is no longer usable via WiFi and I have to direct connect the network via Cat6) What firmware are you using? I saw a post that once you were able to enable the Dolby output selection in the Audio output it would stay that way. However with the current firmware it changes the audio output setting for each input source (HDMI1 / HDMI2 / USB / ...) I don't know how it worked prior to the firmware update.
What you are experiencing are the audio limitations of the tv. I have experienced the same. I am using the ARC function to pass audio from the tv to my receiver via HDMI. The Netflix and VUDU apps will pass a multichannel surround signal via ARC, but won't pass 5.1 from other HDMI connected devices to the tv. It says this in the owners manual. My newer receiver will create pseudo surround audio by using internal Prologic or DTS Neo processing, which sounds decent. The optical connection from the tv to the receiver should work when set to PCM, but does not the way you would think. You can set the surround to DTS Neo, but your receiver probably needs to be able to decode DTS Neo.
In your case you have a few options;
1. Live with what you have, 2 channel audio and if your receiver is capable, have the receiver internally make pseudo multichannel audio.
2. Connect the audio outputs of all of your devices directly to your receiver via optical cable. Depending on how many devices you have you will probably need an external switch box also.
3. Buy a new receiver capable of using HDMI ARC, but understand that only the Smart Apps will pass multichannel surround. You would still have to use pseudo decoding if you decide to connect a device directly to the tv, but you probably wouldn't have to do that because you can connect the devices directly to the new receiver.
4. Return the tv and get one that handles audio the way you need, but you may not be able to find one that does.
Yes, after getting the tv I had to get a new receiver myself because my previous receiver did not pass a 3d signal via HDMI. That solution was still not perfect because I still have to connect my game systems to the TV directly to take advantage of the Game mode. If I want 5.1 from the game system I have to connect an optical cable from the system to the receiver. You would be doing yourself a favor because if you get a newer receiver you will be able to listen to lossless audio if you have a Bluray collection.
Sorry most of the solutions involve spending money, I feel your pain.