Skip to main content
Rich1234b
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 

This topic has been closed for further comments. You can use the search bar to find a similar topic, or create a new one by clicking Create Topic at the top of the page.

18 replies

Show previous replies
GuitarSuperstar
Lead Maestro
December 8, 2022

I don’t live in the UK so I don’t know exactly what audio formats they use. If I had to guess:

Stereo source - “Stereo PCM”

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

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

Thanks

which is better dolby multichannel PCM 5.1 or dolby digital plus 5.1 or is it subjective?
can you tell the difference?

GuitarSuperstar
Lead Maestro
December 8, 2022

If you are seeing “Dolby Multichannel PCM 5.1”, the TV is probably doing some sort of audio conversion which you don’t want. That’s why the Pass Through setting on the TV is the best option because it leaves the audio untouched. “Dolby Digital Plus 5.1” is what you want to see. But choose the audio format that sounds best to your ears.

"Receive with simplicity everything that happens to you." - Rashi
John B
December 8, 2022

Most UK terrestrial channels are in stereo. Surtound sound is a distant dream in most cases. 

    John B
    December 8, 2022

    I have been watching World Cup matches on iPlayer as this gives the option to watch in UHD. I haven't paid any attention to the sound format. 

      Rich1234bAuthor
      Avid Contributor I
      December 8, 2022

      Basically I get Dolby Multichannel PCM 5.1 when earc on and Dolby Digital Plus 5.1 when toggled off , not sure why ?  That’s just the tv and Sonos arc connected ???

      Rich1234bAuthor
      Avid Contributor I
      December 8, 2022

      I have been watching World Cup matches on iPlayer as this gives the option to watch in UHD. I haven't paid any attention to the sound format. 

      Me too, the sound on bbc hd is 5.1 but iPlayer is stereo, but it’s football so who cares 😂 and the picture is much better

      Yatesyeates9933
      Lyricist I
      March 14, 2023

      Fixed- use settings discussed above (earc enabled/bitstream and pass through) but also change sound mode share to ‘enjoy Tv sound mode’ this will show Dolby digital 5.1 when 5.1 is sent to Sonos product or Atmos when atmos. 
      I am using LG pled C2 + Beam(2) sub(3) and 2 sonos one + Apple TV 4K 

      Terms & ConditionsAccessibility statement