I’m a little confused. I have an Apple 4K going into a TV that’s older than a few years. Will the Atmos sound from the TV be pushed through the TV via the eARC/eHDMI connection even though Atmos isn’t native to the TV itself?
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Hi there, what FW is your LG running?
(also, why no Chroma 4:2:2?)
I’ve got the most up to date FW on TV (checked this out about 3 times) also had confirmation from LG that my TV is capable of LPCM passthrough.
I get DD 5.1 passthrough from AppleTV when Audio Format is set to Auto with Atmos off. As soon as I enable Atmos on AppleTV it show Atmos Available but I get no sound at all.
LG TV set up with eARC on and HDMI Input as Bitstream and Passthrough enabled.
(Tried all different video settings in Apple TV and still no change to what happens with audio)
Hi there, what FW is your LG running?
(also, why no Chroma 4:2:2?)
Not from anything playing from AppleTV 4K. I only see Dolby Atmos when playing certain content in the LG TV Netflix app.
copied all the settings for both AppleTV and LG TV and all I get I’d Dolby 5.1
I can confirm the bad news.
HDMI ARC and apple tv 4 k . the apple tv does not recognize sonos arc aa an atmos device. Hence you will get only dd 5.1.
as mentioned before paying so much for a soundbar that is limited to hdmi ARC that the majority of 2019 and before tvs do not support passthrough atmos codec… makes it useless and futile… will return the bar shortly and recommend all the buyers to makensure either their tv support atmos passthrough or dont even think of buying Arc.
i have nu8000 tv apple
tv 4k setting needs to be bitstream imput and output will be automatically chosen to you DF 5.1 if you chose PCM you will get 2.0 stereo.
to confirm what audio signal you are getting go to sonos app settings about sustem and you will seee under arc the input signal coming from the tv… goodluck and goodbye sonos!
as
What content are you playing?
And are you seeing Atmos available in the audio format box?
Just copied all of the above and still no Atmos.
yes AppleTV 4K
I assume you have eArc turned on.
And just for clarity, we are talking about an Apple TV 4k box and not the app on the TV.
I have,
ATV → LG CX → ARC
I am getting Atmos
I am getting DD 5.1
What TV Sounds settings do you have? I’ve got HDMI input set to PCM. If HDMI input set to Bitstream it will only play DD 5.1 not Atmos.
HDMI Input is set to bitstream
Digital sound out is set to Passthrough
If that doesn’t do it I would double check the settings on the Apple TV
Thanks, I have those settings on my TV but I only get sound when the ATV is set to DD 5.1. If I set it to auto I get no sound at all.
what are you ATV settings?
I have,
ATV → LG CX → ARC
I am getting Atmos
I am getting DD 5.1
What TV Sounds settings do you have? I’ve got HDMI input set to PCM. If HDMI input set to Bitstream it will only play DD 5.1 not Atmos.
HDMI Input is set to bitstream
Digital sound out is set to Passthrough
If that doesn’t do it I would double check the settings on the Apple TV
I have,
ATV → LG CX → ARC
I am getting Atmos
I am getting DD 5.1
What TV Sounds settings do you have? I’ve got HDMI input set to PCM. If HDMI input set to Bitstream it will only play DD 5.1 not Atmos.
I have a 2017 LG C7 with an HDMI ARC connection. I am also getting Atmos thorough Apple TV via Disney Plus, Netflix and Prime on listed Atomos content as well as DD 5.1 on non Atmos content.
I have,
ATV → LG CX → ARC
I am getting Atmos
I am getting DD 5.1
It would be helpful if a Sonos employee could clear this up from their end for us.
This does seem like a strange oversight. I had planned to use the following chain of devices: Apple TV 4K —> LG OLED TV (eARC) —> Sonos Arc. With the lack of support for LPCM, will that cause this setup not to work with Atmos? Anyone know if the 2020 LG OLED TVs can downmix the Apple TV audio to something the Sonos Arc can accept, while keeping the Atmos track?
You will be fine if you have eARC. The Apple TV will pass the Atmos to the Arc just fine, if using eARC. Consider yourself lucky - for many people (myself included), our TV’s without eARC will not be able to send an ATMOS signal to the Arc because Apple TV does not use DD+ as a container, and thus what they do send is too large to send through the legacy HDMI arc connections.
Assuming the LG TV can pass through the LPCM audio through the eARC HDMI port, how would the Sonos Arc play the Atmos audio track if LPCM is not supported?
I asked this question to LG and got the following answer:
I have a 2020 LG Nanocell TV. Does Sonos Arc accept LPCM? If not then AppleTV 4K will not play Dolby Atmos. I have been informed through other forums that the LG Apple TV app on 2020 TV’s will be updated to stream Atmos at some point this year.
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It was a given eARC would pass through. The question at hand is will regular ARC pass through from ATV 4k.
Many claimed that since the Arc was not Multi-Channel LPCM capable, the Apple TV 4k would downgrade to stereo, eARC or no eArc. Turns out it wasn’t true in most cases.
I have this problem. ATV → LG C9 → ARC
Atmos works perfectly, but DD5.1 now arrives at the ARC in a 2.0 format as the ARC cannot yet process LPCM beyond 2 channels.
My TV has ARC (No eARC) but I only watch things on my Apple TV 4K.
Currently using the Beam, have preordered the Sonos Arc for Atmos, but now nervous this setup won’t work.
This depends on your TV if it can passthrough the Apple TV 4K Atmos signal to your ARC port. For me that’s a no (Samsung Q900R) - all I get is DD 5.1.
Do all eARC TVs pass it through?
Or is that also a TV by TV basis?
If it is, what spec item should I look for as I’m probably going to be on the market for a relatively inexpensive compatible 55”...
My TV has ARC (No eARC) but I only watch things on my Apple TV 4K.
Currently using the Beam, have preordered the Sonos Arc for Atmos, but now nervous this setup won’t work.
This depends on your TV if it can passthrough the Apple TV 4K Atmos signal to your ARC port. For me that’s a no (Samsung Q900R) - all I get is DD 5.1.
I’m in the same boat.
My TV has ARC (No eARC) but I only watch things on my Apple TV 4K.
Currently using the Beam, have preordered the Sonos Arc for Atmos, but now nervous this setup won’t work.
Let me know if someone tests this setup.
It was a given eARC would pass through. The question at hand is will regular ARC pass through from ATV 4k.
Many claimed that since the Arc was not Multi-Channel LPCM capable, the Apple TV 4k would downgrade to stereo, eARC or no eArc. Turns out it wasn’t true in most cases.
Not to everyone it wasn’t, I’ve read all the messages on this subject and it was rife with confusion across the board.
My confirmation will satisfy the concerns of some, maybe not all. Helpful none the less.
Userlevel 2
+2
Hi all,
Received my Arc today. I can confirm you can use the Sonos Arc with 4K Apple TV. The Arc is plugged into the eARC port on my 2019 LG OLED, I can successfully watch movies from iTunes with fully Dolby Atmos.
Disney plus however seems to be a problem on both the Apple TV and native app on the LG TV. I get audio, but not Dolby Atmos. Netflix works perfectly fine too with Atmos.
It was a given eARC would pass through. The question at hand is will regular ARC pass through from ATV 4k.
Hi all,
Received my Arc today. I can confirm you can use the Sonos Arc with 4K Apple TV. The Arc is plugged into the eARC port on my 2019 LG OLED, I can successfully watch movies from iTunes with fully Dolby Atmos.
Disney plus however seems to be a problem on both the Apple TV and native app on the LG TV. I get audio, but not Dolby Atmos. Netflix works perfectly fine too with Atmos.
Userlevel 2
+2
I’ve tested Atmos from Apple TV through LG C8 and can confirm this seems to be working for me right now:
-
ATV 4K > C8 HDMI-1 > C8 HDMI-ARC > Vizio SB3512-F6 (HDMI-ARC)
Vizio SB shows green indicator when Atmos working. Tried with Apple content and Disney+.
I figure if ATV 4k is outputing PCM to the TV then the TV probably just downmixes it to DD+ through the ARC-HDMI to the SB. I’m not an expert at it but that typically is how all AV equipment works. you want your output signal to be the best possible version and then the receiving equipment will take that signal and down mix it to what will work. That is different than forcing a specific codec. If you tell your source to output DTS and your input doesn’t support DTS, then you’ll get no sound. Since PCM isn’t a codec, I just imagine the TV will take the info and use what it needs, ie you’ll get DD+ 5.1 or Atmos.
I’ve tested Atmos from Apple TV through LG C8 and can confirm this seems to be working for me right now:
-
ATV 4K > C8 HDMI-1 > C8 HDMI-ARC > Vizio SB3512-F6 (HDMI-ARC)
Vizio SB shows green indicator when Atmos working. Tried with Apple content and Disney+.
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