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Hi,

 

I need your help setting up my Beam gen 2. In the end I think my tv is to old (I hope I’m wrong). 

 

LG OLED55C7V (launched 2017)

 

Apple TV 4K (latest)

 

Sonos beam gen 2

 

What I understand, my tv only have ARC port for hdmi and not eARC. When having the Apple TV set to Dolby Atmos, I can’t have the sound to be synced because I don’t have earc ports. So I tested Dolby digital 5.1. But then I can’t get the sound synced properly and it did also get a little pulsing sometimes. 

 

Last try I set it to Stereo. Now the sound got synced. But the sound sometimes sound like it’s in a pipe / tube. Really weird. 

 

Other settings on my Apple TV are:

 

4K SDR

YCbCr

4:4:4

Match dynamic range and frame rate

 

On my LG TV it’s set to:

 

Bypass/pass through

DTV is set to auto

Simplink on

Output PCM

 

When turning Dolby Atmos off in Apple TV and let it use standard surround and also set the Output in LG to Auto instead of PCM. Now it sends Dolby Digital 5.1 and the weird “pipe”-sound is gone. But, the sound gets a little out of sync. 

 

Is it possible to get any good surround with my tv and still have it synced?

 

If not, what would my settings on Apple TV and LG tv be to Stereo to sound perfectly without the “pipe / tube” issues?

I’ll start by saying that I have a 2014 Sony Bravia with Arc only; connected to a Beam 2, with Era 100’s and Sub Mini. I also have an AppleTV 4K connected to the Sony as well. I obviously can only get Dolby Digital 5.1 or Stereo depending upon the source. I’m having no audio issues as you outline in your post.

Here are my Suggestions in order listed:

  1. Check for updates to AppleTV 4K
  2. Set AppleTV 4K audio to auto
  3. Check for updates for your LG (Click here)
  4. Check for updates for Sonos Speakers (Click Here)
  5. Adjust Audio Sync within Sonos app (Click here)
  6. Contact LG tech support
  7. After the next hiccup (meaning the audio is not what you expected) run a diagnostic within 10 minutes and make note of the Reference ID. Do not post the Reference ID in this forum. ASAP call Sonos Tech Support to discuss the data.

 

And here is the link to call Sonos Support to discuss your diagnostic.

Ok, I have now tested all the 6 first checks. But it still has a delay in the sound. Just a little. But annoying. 
 

I will try calling Sonos tomorrow. 

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