Dolby Atmos Audio out

[Nishanth Noble]

I have connected by Apple TV on my LG C9 OLED TV. It is connected via HDMI. The TV is connected to Onkyo AV via ARC. While playing a Dolby Atmos enables movie, the AV receiver does not recongnize the output. But while connected the Apple TV directly to the AV, Dolby Atmos gets enabled. Though the HDMI Audio out is set to Bitstream why the AV unable to play Dolby Atmos. Please let me know if I need to make any adjustment in the settings.

[Maccy70]

Depends on the implementation of ARC some only output Dolby digital via this connection better to use optical connection.good article on CNet about this. Not all devices implement ARC for high def audio.

 

[Leonard King]

On 6/16/2020 at 1:43 PM, Nishanth Noble said:

I have connected by Apple TV on my LG C9 OLED TV. It is connected via HDMI. The TV is connected to Onkyo AV via ARC. While playing a Dolby Atmos enables movie, the AV receiver does not recongnize the output. But while connected the Apple TV directly to the AV, Dolby Atmos gets enabled. Though the HDMI Audio out is set to Bitstream why the AV unable to play Dolby Atmos. Please let me know if I need to make any adjustment in the settings.

Have you enabled Dolby Digital Plus in the TVs sound settings? It is essential to have this on to pass Atmos via ARC or eARC to a soundbar or processor.