Samsung TV won't pass through 5.1 on optical out if input is HDMI, need suggestions

  • 13 March 2015
  • 36 replies
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I have a Samsung UE49KS7000 4K TV with a Samsung UBD-K8500/XU 4K Blu-ray player, Virgin Media cable box and Apple TV connected to the TV (via the Samsung external connection hub).
I am considering purchasing the Playbar but I'm worried that I may encounter silence at any time e.g. from blu-ray discs or from the Netflix app or Amazon app on the TV.
Will I merely get stereo for now (I am not purchasing a sub yet or any surround speakers)?
I used to have a Yamaha digital sound projector connected but moved that upstairs since it didn't have 4K passthrough.
I hope to expand the Playbar in the future but I've seen on other review sites that DTS is a big issue for the Sonos systems.
Any advice would be much appreciated. Thanks.
Userlevel 5
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The u blu ray definitely will transcode to DD via optical.

The TV should too. That is set in settings> sound. Look at the TV manual for optical output options.
Update - in my blu-ray settings there was a setting to transcode DTS to DD. Set up my new Playbar today and all works fine. (May save up for the sub now...!) 😃
Userlevel 2
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Hi,

yes, the problem is that many devices use EDID info coming from your TV to decide what audio data to feed to the TV. Almost all TV's report in EDID that they can receive only 2ch stereo (part of HDCP policy and copyright agreements .. yes, stupid, I know). You need to fake the EDID data to fool the source device to start to feed surround sound to your TV. But of course, in some cases, the TV really can't pass the surround sound to the digital audio output (HDMI ARC or Optical). But it's worth the try.

You can use HW devices to fake the EDID data (see the replies above).

On Windows the EDID data can be faked by SW - no HW box needed between your Windows HTPC and TV. Just use utility "Custom Resolution Utility" (search the web and download, it's easy to find) and create your own EDID according to your needs (create Custom extension block - add Audio formats 5.1, add Speaker setup 5.1, add HDMI support with "Support audio information" checked) and restart Windows. Then you'll be able in Windows speaker setup to choose 5.1 to be fed to your TV.

- SWJunkie -


Thank you this solved all my issues with HTPC based surround sound 🙂
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Similar question to buzben, if I connect to a Samsung UE40D5000, will I get only stereo (what happens to middle seekers then?), or nothing at all?
Similar question to buzben, if I connect to a Samsung UE40D5000, will I get only stereo (what happens to middle seekers then?), or nothing at all?

I have three HDMI inputs into my Samsung plasma and use the optical audio out from the TV to my Playbase. I just added two Play 1s for surround sound. Unfortunately, Dolby Digital is grayed out on my TV audio settings. It can only output PCM, which is 2.1. Sonos converts the signal into 5.1, but it's a matrix, like Dolby Pro Logic. Generally it's okay, but I can't stand hearing dialog from the surround speakers when it should only be coming from the center channel.
I *think* that th reason that it's greyed out on your audio settings is that the input that you're watching at the time is only in stereo. Try sending a 5.1 Dolby Digital signal through the HDMI, and see if that setting on the TV's audio settings becomes valid.

Note: I don't own, nor have I ever owned a Samsung TV set.
Userlevel 7
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Use an EDID box, as referred to earlier in the thread. Samsung TVs such as mine suck, you need to fool the audio source despite what the TV tells it to send over HDMI.
I had this problem and have gotnroundnit using a eSynic Spdif Toslink Switcher 3 X 1... from amazon. I attached skyboptical and the tv optical to the toslink and akybto my tv via hdmi. When I want top quality skybsound I switch to that optical, when I want tv/Netflix I switch to the other. It has a remote and good news is that the beam volume can still be controlled from my tv remote which it can’t if direct connecting from sky only. I hope this helps.
I want to re-iterate the response by Peep, as it worked for me.

Here's my setup:
- AppleTV 4k HDMI In (not ARC)
- Samsung 4k TV
- Sonos Beam + Sub + 2 Play:1's (plugged into TV via HDMI ARC from Beam)

I banged my head against the wall forever trying to get the any of the Dolby audio output settings to become "un-greyed". Finally, after reading Peep's posting, I played a newly-released episode from a new episode series (so i could be sure that it was true 5.1 content. For the first time yet, the Dolby Digital 5.1 setting on my Samsung 4k tv was no longer greyed out. When I put it to another type of content (in my case, DirectTV Now app on apple tv), the Samsung audio output switches automatically back to only PCM and DTS options (Dolby greyed out). I return to the Netflix 5.1 content, Dolby is no longer greyed out and, best of all, when i go to More > Settings > About My Sonos in the Sonos App, the audio input to the Beam is finally sweet, sweet Dolby 5.1.

So no Monoprice necessary, it was just a matter of the content being output from the original source, the Apple TV4K. Until DirectTV Now supports 4k/Dolby content i'm sort of lost in terms of just watching TV, but I have an answer to something that was sort of irking me for a while. Thanks Peep.
I've tried a couple of different alternatives to try and get a solution whereby I can get dolby audio from my PS4 and from internal tuner/apps to go to my Beam. I have a 2013 Samsung F6500 tv which does not appear to passthrough dolby either through optical or arc. I tried to introduce an EDID manager as mentioned in other posts, to allow me to select dolby on the TV when PS4 is on. This did work and dolby was no longer greyed out, however I could not get any sound output either to the Beam or even to the internal speakers. I'm assuming this is down to the lack of passthrough functionality in the TV ie the sound get "stuck" in the TV.

My next option was to try a HDMI switch. I needed something that didn't require external power supply (lack of free plug sockets) that would ideally let me feed sound from PS4 directly to the Beam and so bypassing TV, but also feed sound from TV so I can still use tuner and built in apps. My setup was Optical out on PS4 using the HDMI adapter from Beam > HDMI Switch. Arc socket from TV > HDMI switch and then HDMI switch > Beam. It's a manual switch and when I set it to the PS4 side of the switch it worked perfectly. All I had to do was change sound on TV from receiver to external. Unfortunately when I change the switch to get sound from the ARC port all I get is silence - Beam reports no audio. I'm guessing this is an issue with how the audio is passed through the switch. The TV seems to recognise the Beam when Anynet is enabled it displays Sonos Beam and lets me change volume If I change HDMI source on TV to the ARC one I can see the pattern that comes up on screen so some kind of signal is getting through just not the audio - very frustrating!!

Not sure whether to try a different HDMI switch but struggling to find any that definitively say they will passthrough the ARC signal.

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