I am having some pretty strange audio issues with my XO. My setup is as follows:
1) Cable Box (Cisco brand and TWC as the provider) plugged in via HDMI to XO
2) XO via HDMI to TV using supplied HDMI cable (2009 Sony model KDL-52XBR9)
3) TV optical out to DVR/5.1 Surround Combo Box (2009 SonyBDV-E300)
This is the same setup that I used with my 360, except for the Cable Box connecting directly to the TV via HDMI
I was unable to set the audio option to anything other than stereo with the TV setting to auto. When I switched to manual, I was able to select from: Stereo, 5.1 uncompressed, 7.1 uncompressed, and DTS audio. Stereo results in stereo sound (as expected). DTS setting results in no audio outputs whatsoever, and 5.1 SOMETIMES produces full surround sound. In many cases I receive all audio channels, except there is NO speech or dialog output from the XO. If I shut off the surround sound, I still do not receive speech or dialog.
This has happened with streaming content from Netflix and Vudu, DVD and Blu-Ray content played from the XO, and when watching cable tv content. The only pattern that I can discern is that when the audio acts up when playing cable TV are programs that are transmitting in surround sound. I know that the XO is negotiating (or should be negotiating) a stereo signal from the cable box. I have tried checking the beta surround sound option located in the troubleshooting section under the TV and OneGuide Settings menu with no change in behavior. The only way to get working audio is to uncheck the surround beta option and go to stereo sound.
I have not yet tried connecting the digital audio cable directly between the XO and the surround sound receiver as I understand that it currently outputs stereo ONLY. I've been through every iteration of settings within the TV and the surround sound and that hasn't improved the situation either. The other item that I want to add is that it seems the audio when playing Forza 5 is odd, but I am not sure if that is expected behavior or not. The dialog during loading screens is barely audible when the audio is at an acceptable level while in a race. Also, the exhaust and engine sounds from my vehicle seem lower than surrounding cars and the sounds of collisions is VERY loud in comparison to any other audio.
Sorry in advance for the length of description. Has anyone experienced a similar issue?