Thought I would share a post I made over at AVS troubleshooting/reviewing my Home Theater experience I recently put together.
Just bought a new house with a dedicated media room, so thought it would be a good time to fulfill a goal I've had ever since my dad talked about wanting to have a bad ass theater-like experience at his house. I bought a Sharp Aquos 80" (LC-80LE632U) and Sonos wireless 5.1 system that consists of Playbar, sub, and two Play:3's mounted in the rear. The components (STB, PS3, Xbox, HDMI switch, network switch, etc) are in a closet in the back of the room. I purchased a Harmony Ultimate which works over RF to a hub in the closet to be able to control everything through the closed door. All cables run through attic above room so everything appears wireless. I was having issues getting a 5.1 signal to the Sonos audio equipment. Took to AVS for help:
Update: Had to change the source output (STB) to Surround to get it to send 5.1. Getting 5.1 DD on all HD channels now.
The PS3 is a different story. I messed with all the different audio output settings, but never got it to send a 5.1 signal. The PS3 is sending it's signal over HDMI to the switch, so whenever I set it to optical and changed the output, I had zero audio. Makes sense. So the rest of my changes were on the HDMI setting. My test movie was Iron Man BD, which is encoded in 5.1 DD TrueHD in English, and regular 5.1 DD French/Spanish. From my understanding, TrueHD and DTS-Master Audio are lossless audio formats and can only be sent over HDMI, not optical. So it would make sense that the PS3 downmixes the feed to stereo for the English version. However for Spanish/French, I was expecting a 5.1 DD signal, but never got it. Another awesome (/sarcasm) feature of the Sonos Playbar is it doesn't support DTS. Anything that comes in over DTS gets automatically downmixed to PCM. It's under consideration by Sonos to update the firmware for DTS support, but currently does not work. I tried a torrent of ripped Game of Thrones that was streamed over PS3 media server, and only got stereo as well, but I didn't check the audio encode of the rip so it could have been any number of things wrong with this test.
Another side effect of running the audio straight to Playbar and bypassing TV is the addition of audio delay. Apparently the TV takes a few hundred milliseconds longer to process the video signal than the playbar takes to process the audio signal, so no matter the source, I get lip sync issues. The Playbar has a built in audio delay setting, but even maxed out it wasn't making up the difference. After some research, I found a suggestion of turning the Audio Compression off in the Sonos controller settings, and when coupled with the Playbar's built-in audio delay, I finally got the video and audio to match up.
When I originally went into BB and started talking about different 5.1 options for my HT setup, I was told how intuitive and easy the set up Sonos was for getting badass sounding 5.1. My fault for not doing prior research, but the amount of extra time and work I've had to spend on this is definitely not "intuitive and easy." I would say the majority of TV'sDo Notpass 5.1 through their optical from an HDMI source, which is currently the only "supported" format Sonos references in their FAQ's and troubleshooting. If you've got rabbit ears or an internal TV tuner, more power to you. But I would wager the vast majority of people send their sources over HDMI. So not only do I have to buy a switch with optical out and run a 50 foot cable over my ceiling, but then I found out the Playbar doesn't support DTS and optical doesn't carry the signal for DD TrueHD or Master Audio. So even if Sonos patches the firmware, I still won't be getting lossless audio unless they release a different Playbar next year or whenever that has HDMI input. And then I'll have to buy another switch with multiple HDMI outputs, one for the TV and one for the Playbar.
TL/DR - Sonos' first attempt at Home Theater 5.1 is not for audiophiles. I enjoy it for other reasons like the ability to add different zones around the house, lack of speaker wires, and being able to control everything from a smart phone/tablet. And admittedly, the audio sounds pretty damn good, even in stereo. But for the true purists out there, until Sonos gets their shit together and updates firmware or puts out a Playbar with HDMI in, look elsewhere for your HT audio solution.