Trending Lyricist I

LG C9 and Sonos Arc

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Hey all, my Arc was delivered this morning and I've had a chance to hook it up to my LG C9 directly via eARC and ran a few tests regarding Atmos and other features.

Built in apps:

Netflix - Reporting Dolby Atmos (DD+) for Atmos content.
Disney+ - Reporting Dolby Digital Plus 5.1 (though this is likely due to the current throttling taking place in the EU)
Amazon Prime - Reporting Dolby Atmos (DD+) for Atmos content.

Xbox One:

HDMI Audio set to Bitstream out and Bistream Format set to Dolby Atmos has no delay, finally! Displays Dolby Atmos in Sonos app.

PS4:

Like with the Xbox, there's no delay on Bitstream HDMI audio

NVidia Shield Pro:

Netflix - Reporting Dolby Atmos (DD+) for Atmos content.
Amazon Prime - Reporting Dolby Atmos (DD+) for Atmos content.
Disney+ - Reporting Dolby Digital Plus 5.1 (though this is likely due to the current throttling taking place in the EU). After connecting up to a US VPN it's reporting Dolby Atmos (DD+) for Atmos content.
PLEX - This is where it gets slightly annoying. Playing TrueHD content it reports Stereo 2.0. Setting Passthrough to HDMI reports Dolby Atmos (TrueHD). For DTS content you need to switch the Passthrough setting to Optical which in turn causes TrueHD to playback in Dolby Digital Plus 5.1.

Apple TV:

iTunes Content - Reports Dolby Atmos for Atmos content. Non Atmos content reports Stereo 2.0. With Change Format > On and New Format > Dolby Digital 5.1, I receive Dolby Digital 5.1 from non-Atmos iTunes content. I ran this test using Beetlejuice and Avengers Assemble.
Netflix - Reports Dolby Atmos for Atmos content.
Amazon Prime - Reports Dolby Atmos for Atmos content.
Disney+ - Reporting Stereo 2.0 for all content bizarrely. Setting audio output on the Apple TV to Dolby 5.1 allows all content to playback in 5.1 rather than stereo.

My C9 is running firmware 04.80.03 with the following settings:

Sound Out

HDMI ARC selected

Digital Sound Out set to Passthrough

eARC set to ON

Additional Settings

DTV Audio Setting set to Auto

HDMI Input Audio Format set to Bitstream.

If there's anything else I can test or any questions, let me know!

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W

Wolf

Enthusiast I

Thanks Zophop - I also have a C9 and unfortunately Arc has been held up in delivery so won’t come until tomorrow. Couple of questions:

If you stream content through the inbuilt Apple TV app, is it coming through as Atmos or DD 5.1?
Do you have a Sky Q box hooked Up to the Tv and if so, any lip sync type issues?
Odd the Disney + app isn’t coming through as Atmos, will hopefully sort itself out

Sounds like it’s pretty much play and play for the C9 which is good!

Using the inbuilt Apple TV app Atmos supporting content comes through as DD 5.1.
I’ve not got a Sky Q box to test with as I’m a Virgin Media customer. The fact that the sync issues with the Xbox & PS4 seem to be solved hopefully bodes well for lip sync and the Sky Q.

Cheers - bit frustrating the built in Apple TV app only outputs in 5.1 - hopefully they will fix this through a patch

Z

ZophopAuthor

Trending Lyricist I

This is very strange as I have the C9 and Apple TV 4K and in Disney I get 5.1 no issue and on prime i am only get 2.0 stereo?! So it seems I am getting something different to you even with the exact same set up?

What’s your audio settings on the Apple TV set to? That’s really odd!

They are set to change audio NO and Atmos on! So the Atmos stuff on amazon is showing 2.0 and Disney Atmos is showing 5.1

So bizarre. What region are you in if you don’t mind me asking?

I am based in the UK

I’ve just reset my Apple TV and I’m still getting Atmos in Netflix and Amazon but only 2.0 in Disney+, so weird.

W

Wolf

Enthusiast I

https://www.google.co.uk/amp/s/www.imore.com/dolby-atmos-support-apple-tv-app-coming-lg-smart-tvs-later-year%3famp

Looks like built in Apple TV app will be getting Atmos support later this year

C

craigski

Local Superstar

If there's anything else I can test or any questions, let me know!

When your TV is off, and you power TV on, how long before you hear sound from Arc?

I have LG series8 (previous model), when I power on takes about 2 seconds before I see a picture on TV, and then another 4 or 5 seconds before I see a green LED flash on Arc and I hear sound from Arc.

I previously had a Playbar connected via optical, and I would hear sound as soon as picture appeared, so I’m curious where the delay is.

TIA!

Ryan S

Retired Sonos Staff

Thanks for sharing and helping out @Zophop!

Mark good posts by pressing the like button, and select the best answer on questions you've asked to help others find solutions.

Z

ZophopAuthor

Trending Lyricist I

If there's anything else I can test or any questions, let me know!

When your TV is off, and you power TV on, how long before you hear sound from Arc?

I have LG series8 (previous model), when I power on takes about 2 seconds before I see a picture on TV, and then another 4 or 5 seconds before I see a green LED flash on Arc and I hear sound from Arc.

I previously had a Playbar connected via optical, and I would hear sound as soon as picture appeared, so I’m curious where the delay is.

TIA!

I’ve done a bit of testing and it seems to be roughly 4-5 seconds between pressing the power button and both the audio and video springing into life together.

M

Mishaal

Lyricist II

I've go an lg b9 and when I play something that is Atmos it shows on the tv as playing Dolby vision and then in the sonos app it shows dd+ I don't think that is Dolby Atmos is it?. If I unplug the arc and play the same Netflix prog through the tv speakers it says Dolby vision and underneath Dolby atmos

Looks like I’m having the same problem, as I own an LG B9 TV too , difference is I saw the “vision and atoms” sign near to the movie title once and then it didn’t show in other movies, back again to the same movie it’s no longer there. the app also doesn’t read atoms , reads Dolby digital 5.1

any recommendations?

Thanks

M

Mishaal

Lyricist II

I've go an lg b9 and when I play something that is Atmos it shows on the tv as playing Dolby vision and then in the sonos app it shows dd+ I don't think that is Dolby Atmos is it?. If I unplug the arc and play the same Netflix prog through the tv speakers it says Dolby vision and underneath Dolby atmos

Looks like I’m having the same problem, as I own an LG B9 TV too , difference is I saw the “vision and atoms” sign near to the movie title once and then it didn’t show in other movies, back again to the same movie it’s no longer there. the app also doesn’t read atoms , reads Dolby digital 5.1

any recommendations?

Thanks

Actually I’ve just realized that the vision.atmos sign was only when the arc is off !

D

dmcc

Lyricist III

C9 / Apple TV / Arc

Atmos working on Netflix, but all other 5.1 just shows as stereo 2.0 on Sonos app.

ATV change format off, atmos on

C9 eARC enabled. Digital sound out is Auto.

if I set sound out to pass through I get what appears to be two non speech channels passed to Sonos. Very odd.

Z

ZophopAuthor

Trending Lyricist I

C9 / Apple TV / Arc

Atmos working on Netflix, but all other 5.1 just shows as stereo 2.0 on Sonos app.

ATV change format off, atmos on

C9 eARC enabled. Digital sound out is Auto.

if I set sound out to pass through I get what appears to be two non speech channels passed to Sonos. Very odd.

What firmware version is your C9?

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