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Hi everyone,

 

First, let me introduce my setup.

- Hisense C1 Projector

- Apple TV 4K

- Sonos Beam Gen 2 - Connected on the HDMI Arc with a 2.1 cable.

 

Since 3 or 4 days i'm experienced some sound delay.

 

Here my experiments : 

I try only the Projector with Beam, no problem.

I try only the Projector’s built-in speaker and Apple TV, no problem.

And the full setup Projector, Beam and Apple TV, sound delay close to 1sec after the image appears.

 

I discovered through these 3 tests that only the 5.1 codec was a problem. No sound delay in Stereo or Atmos. (I didn’t try Beam in Airplay but this is not a solution).

 

So i asking please some help cause i’m in a dead end.

 

In case its help, the delay became after i try the Sonos Ace with Beam. Maybe the next 1 or 2 day. Since my tests i remove the Ace from my Beam.

Realistically, the Beam should only play what it receives from the projector. It doesn’t process anything. But there have been a few threads in the last couple of weeks where the Beam has been a problem with sync because of not being connected to HDMI eARC, only HDMI ARC.
That said, as stereo and Atmos are okay, it’s strange 5.1 wouldn’t be. 
What are the sound settings you have selected on your Apple TV? 

 

Hi,

 

I’m in Auto Atmos

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