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Avid Contributor I
December 7, 2022

LG C2 e arc toggle

Hi

i have a Lg c2 television with a arc and 2 ones for surround.

In the sound setting on the tv if I toggle on earc I can receive atmos but on bbc etc I get dolby multichannel PCM 5.1 shown on Sonos app,  if I toggle off earc I can no longer get atmos, but on bbc etc I get dolby digital plus 5.1 or 2.0 ?
do I need to keep toggling this on and off depending on content?
thanks in anticipation 

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18 replies

Lead Maestro
December 7, 2022

Set your TV to these settings and you shouldn’t have to toggle eARC on/off:

HDMI Input Audio Format: Bitstream

Digital Sound Output: Pass Through

eARC Support: On

"Receive with simplicity everything that happens to you." - Rashi
Rich1234bAuthor
Avid Contributor I
December 7, 2022

Thanks for reply

that is how it is set at the moment.

Lead Maestro
December 7, 2022

What happens if you change the Digital Sound Output setting to Auto instead of Pass Through?

Are you only using the TV’s native streaming apps or are you using an external media device?

"Receive with simplicity everything that happens to you." - Rashi
Rich1234bAuthor
Avid Contributor I
December 7, 2022

Hi

if I have earc off the native apps play atmos and Dolby digital plus 5.1 on bbc etc

i need earc on to play atmos from Apple TV 4K but only get Dolby multichannel PCM 5.1 on bbc etc ????

Lead Maestro
December 7, 2022

Yes, eARC doesn’t need to be enabled for the native apps to play the proper audio formats.

Are you 100% sure the Digital Sound Output setting on the TV is set to Pass Through and not Auto?

"Receive with simplicity everything that happens to you." - Rashi
Rich1234bAuthor
Avid Contributor I
December 7, 2022

100% been trying different settings all night 😂😂

Lead Maestro
December 8, 2022

With the TV set to Bitstream and Pass Through and eARC enabled, these are the audio formats you should be getting from the Apple TV 4K:

Stereo source - “Stereo PCM”

5.1 source - “Multichannel PCM 5.1”

Dolby Atmos source - “Dolby Atmos”

"Receive with simplicity everything that happens to you." - Rashi
Rich1234bAuthor
Avid Contributor I
December 8, 2022

Hi 

this is exactly what I get on the tv itself with just tv and Sonos connected, is that correct?
Apple TV with earc on gives atmos, off it gives Dolby digital 5.1.

Lead Maestro
December 8, 2022

With the TV set to Bitstream and Pass Through and eARC enabled, these are the audio formats you should be getting from the TV’s native apps:

Stereo source - “Stereo PCM”

5.1 source - “Dolby Digital Plus 5.1” or less often “Dolby Digital 5.1”

Dolby Atmos source - “Dolby Atmos”

"Receive with simplicity everything that happens to you." - Rashi
Rich1234bAuthor
Avid Contributor I
December 8, 2022

What should it be on terrestrial digital television in the uk? Toggling earc on and off changes to that in my first post