HDMI connection from eARC TV to basic ARC sound system

[merseyswine]

I want to connect my AG9 Master Series TV (which has an HDMI/eARC port) to a 5.1.2 sound system which has an HDMI ARC port but not eARC. Which Dolby formats will the TV be able to pass to the sound system and which formats won't it be able to pass through?

[kinggo01]

eARC on ARC will do the same as ARC on ARC

[merseyswine]

Am I correct in thinking that ARC-on-ARC won’t support Dolby Atmos? If that is the case, I will need to buy a sound system that supports eARC.l if I want get the best sound on 4K streamed content

[kinggo01]

if you mean atmos like from netflix, that will work.

[merseyswine]

Yes, but that’s what confuses me. I read that basic ARC doesn’t support Dolby Atmos but I’ve heard from people who own sound systems with no eARC that they can watch Netflix and still get the Dolby atmos 

[kinggo01 · Accepted solution]

because neflix atmos is....... well, not the same thing you get on disc.

And eARC on TV is only useful for sources connected to other HDMI ports on the TV. If you are not using BR player or some other external source of lossless audio connected to the TV than eARC will do nothing and you can switch it off since it seems that is causing some problems with audio droputs.

[merseyswine]

Spoiler

ok - thanks for that explanation. You've been most helpful.