Hello,
just received the Arc and so far loving my first Sonos device 
I have an Apple TV 4K, LG OLED B9 (eARC support) and now the Sonos Arc.
When I play normal DD-Content on the ATV, the Arc only outputs Stereo. (The TV also says PCM)..
Is there anything I can do besides force the ATV to output DD? Because it would be not so nice to switch between the audio settings if I want to watch Atmos or DD-Content.
Thanks
Michael
How do you verify the Arc is receiving Dolby Atmos? I also have a LG C9 and with the internal Netflix app I only see “Dolby Digital Plus 5.1” in the about my sonos System screen. Should it state “Dolby Atmos”?
Hey, what firmware are you running on your TV? I have a C9 and I have not updated to the newest firmware that includes multi-channel LPCM support and I am not experiencing this issue. My Apple TV 4K is set to Auto and Dolby Atmos on, and when I play Atmos content it is output as Atmos and when I play a 5.1 movie it plays as 5.1, no downmixing to stereo.
However, I have seen someone else with your issue and their C9 was updated to the latest firmware. Based on this I suspect that the inclusion of multi-channel LPCM in the LG C9/B9 series has caused the Apple TV to output everything as LPCM and the TV now sends it straight through instead of converting it like it used to. Of course the Arc can’t handle multi-channel LPCM yet so it downmixes it to stereo.
So to get a better idea, what firmware are you rocking?
Just wanna chime in, I got DD+ this working on my X900E via AppleTV after having issues with the audio in being Stereo 2.0.
In your TV’s sound settings, there should be a setting for digital audio out, and it should be set to “Auto 1”.
On the AppleTV, go to settings, Audio format, Set “Change format” to On, and new format: Dolby Digital 5.1.
This enabled DD+ for compatible content over ARC (not eARC) on my TV.
Oh sorry, I should have make it a little clearer..
I only use the Apple TV 4K:
Yep! I experienced the same issue. I also ran into an issue where I would get no sound at all until I change the settings within the tv from auto to pass through. Annoying when switching back and forth.
How do you verify the Arc is receiving Dolby Atmos? I also have a LG C9 and with the internal Netflix app I only see “Dolby Digital Plus 5.1” in the about my sonos System screen. Should it state “Dolby Atmos”?
When playing content hop on to the Sonos app-Settings-System-About my system- Search for your Arc and look for Audio in. That will tell you what content you are getting.
We just bought the same tv, and look forward to using the ATV as soon as Sonos updates the Arc to read LCPM. Right now we are watching Netflix, Prime and Apple Tv via the app within the TV. Youtube TV does not work from the app, so we have to watch from the Apple TV box. This is the only way I have been able to make everything work with the correct audio output at this time, as I am not interested in changing the formats within the TV or ATV every time I want to change where we are getting our video content.
I will be very excited when the update adds LCPM and we can go to one place to watch our shows and movies.
I’m experiencing the same issue, hopefully this is next on the list and the bass fix.
We just bought the same tv, and look forward to using the ATV as soon as Sonos updates the Arc to read LCPM. Right now we are watching Netflix, Prime and Apple Tv via the app within the TV. Youtube TV does not work from the app, so we have to watch from the Apple TV box. This is the only way I have been able to make everything work with the correct audio output at this time, as I am not interested in changing the formats within the TV or ATV every time I want to change where we are getting our video content.
I will be very excited when the update adds LCPM and we can go to one place to watch our shows and movies.
The appletv app on LG does not support atmos yet but LG said it will eventually, So far The only app that works for me on LG to arc is Netflix, I cant get Plex to work as I downloaded a sample atmos short demo but the sound again did not come through. Does anyone have any idea as to when the Sonos update to allow appletv to work in a direct connection to the tv? And is everyone sure that LCPM will work correctly? Thanks everyone
I have the new LG 75NANO90UNA tv which has an EARC hdmi 2.0 I have that sending the signal to the Sonos Arc and I have the Apple TV connected to a regular hdmi 2.1 but it refuses to play a sound when it goes into a movie that has atmos. When I go to the menu for the movie the theme music plays and when I play a non atmos movie the sound goes through fine but the minute I play an atmos movie from atv it has no sound. I can play atmos from the Netflix app on the tv (Space Force) and it does show on the Sonos App that it is in Dolby Atmos. I am now at a complete loss as to what else to try as the entire reason I bought a brand new tv and the Sonos Arc was to be able to play my atmos movies I bought that are on my Apple TV. If anyone has any ideas I would love to hear them, I have tried every setting I can think of, and the tv has arc set to on and passthrough enabled also. The Apple TV is set to bitstream on the lg tv. The lg app for appletv+ doesn't play atmos but it is not supported as yet apparently but will be updated FYI but the LG Netflix app plays atmos perfectly.
ARGHHHHHH
I’m having the exact same issue with my brand new setup LG 65 NANO85. No sound output at all on Atmos titles from Apple TV services (Netflix, Apple TV+ etc). TV HDMI setting is set to Bitstream, only other option is PCM.
Any one know why I’m getting no sound at all from Atmos titles? This is so disappointing as I’ve purchased this whole brand new tv and setup just to get Atmos on the Arc.
Let's hope that the Sonos staff is looking in this thread and see this huge issue. It should be an easy fix. Sonos Arc is not worth anything without this fix. It should have been working from day one.
LPCM is only interesting if you have EARC. LPCM can’t pass over ARC, therefore it should be Dolby Digital Plus in case of ARC. Which the ATV only outputs for Atmos content. For non Atmos content you have to force the ATV to Dolby Digital but then Atmos doesn’t work. Which is the point the topic starter is trying to make.
LPCM is only interesting if you have EARC. LPCM can’t pass over ARC, therefore it should be Dolby Digital Plus in case of ARC. Which the ATV only outputs for Atmos content. For non Atmos content you have to force the ATV to Dolby Digital but then Atmos doesn’t work. Which is the point the topic starter is trying to make.
The future is earc. And to sell a brand new product that don't support something af simple as LPCM is not very smart.
LPCM is only interesting if you have EARC. LPCM can’t pass over ARC, therefore it should be Dolby Digital Plus in case of ARC. Which the ATV only outputs for Atmos content. For non Atmos content you have to force the ATV to Dolby Digital but then Atmos doesn’t work. Which is the point the topic starter is trying to make.
Fine but I do have a tv with EARC and again I don’t care if it’s Sonos Apple or lg someone needs to fix it now
Sorry sonos. But this is product is not something I would recommend anyone to buy.
I really regret going all in on this. Bought a new TV with Atmos and earc so it would be the be the perfect setup. And this is what I get.
Have 8 sonos product in my house. So this is very disappointing.
It would be nice is Sonos we’re actually reading any of this. !!
I have two Arcs and I use Apple TV’s on both TVs. My Arcs will be going back with no update on this soon.
I have two Arcs and I use Apple TV’s on both TVs. My Arcs will be going back with no update on this soon.
I give it 14 days, this is an easy fix, i cant take Them Long to implement this. There are a lot of People on waiting list for Arc. And When they recieve this unfinished product, there gonna be a lot angry customers.
You cannot state it’s unfinished. The NVIDIA Shield can bitstream so there the Arc works exactly as expected. Most Bluray players can. Most consoles can. Every recent TV streaming app works as expected. It’s only the combination with ATV.
You cannot state it’s unfinished. The NVIDIA Shield can bitstream so there the Arc works exactly as expected. Most Bluray players can. Most consoles can. Every recent TV streaming app works as expected. It’s only the combination with ATV.
The Lg tv app for Netflix and amazon prime stream atmos but it doesn’t support atmos with appletv+ yet. They say they will update it eventually so at the moment all of my atmos movies on Apple will not work unless I turn off atmos And stream it in 5.1 or just use the lg app on the tv and then I also get 5.1.
Sonos stated 14 days ago (found in another Thread) that an LPCM update is on the way. Soon. They know it's a huge issue and just on them to fix.
Hello,
just received the Arc and so far loving my first Sonos device
I have an Apple TV 4K, LG OLED B9 (eARC support) and now the Sonos Arc.
When I play normal DD-Content on the ATV, the Arc only outputs Stereo. (The TV also says PCM)..
Is there anything I can do besides force the ATV to output DD? Because it would be not so nice to switch between the audio settings if I want to watch Atmos or DD-Content.
Thanks
Michael
We without earc can use HDfyry new device Arcana, make it happen sign up.
Hi all, I have the following setup:
Sonos Arc + Sub + rear speakers (Sonos 5, 2nd gen.) and LG 65 C9 with updated firmware.
Using ATV 4K exclusively for all content.
Other relevant settings: LG C9: eARC on, digital sound out: Passthrough.
I just want to share my findings. Probably consistent with the results other people got in this thread.
ATV: Auto, ATMOS enabled.
Atmos content (Netflix etc.): Works fine.
Non-atmos content (marked as 5.1 in Netflix): I get surround sound but no voice! (anyone else get this?)
ATV: Dolby Digital 5.1. (Atmos disabled)
Atmos content: Obviously no Atmos sound. Probably DD 5.1 but sounds fine.
Non-atmos content: Works fine and playing as Dolby Digital 5.1 (verified in Sonos app)
Is this what people are experiencing?
Hi all, I have the following setup:
Sonos Arc + Sub + rear speakers (Sonos 5, 2nd gen.) and LG 65 C9 with updated firmware.
Using ATV 4K exclusively for all content.
Other relevant settings: LG C9: eARC on, digital sound out: Passthrough.
I just want to share my findings. Probably consistent with the results other people got in this thread.
ATV: Auto, ATMOS enabled.
Atmos content (Netflix etc.): Works fine.
Non-atmos content (marked as 5.1 in Netflix): I get surround sound but no voice! (anyone else get this?)
ATV: Dolby Digital 5.1. (Atmos disabled)
Atmos content: Obviously no Atmos sound. Probably DD 5.1 but sounds fine.
Non-atmos content: Works fine and playing as Dolby Digital 5.1 (verified in Sonos app)
Is this what people are experiencing?
Yes - exactly that. No centre channel on 5.1 (non-Atmos) content when Atmos is enabled on the ATV.
I presume this will be fixed by the LPCM update on the Arc? (when it eventually arrives!)
Let's hope that the Sonos staff is looking in this thread and see this huge issue. It should be an easy fix. Sonos Arc is not worth anything without this fix. It should have been working from day one.
Sonos can’t fix this. Apple should enable recode to Dolby Digital Plus as output or even better, bitstream the audio track.
I was under the impression that Sonos needs to implement LPCM as a signal and it should all work. I basically don’t care who does it I just want it to work as DMD this should have been known before releasing this product and having people buying New TVs with EARC.
Exactly! I don’t know why some try to defend every mistake Sonos made releasing this product
Hi,
Still no new on the LPCM side from Sonos Arc?
I’m assuming this has all been fixed by the update of a couple weeks ago? Awaiting my Arc that I ordered last week...
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