Apple TV 4K, Sonos Arc and Dolby Atmos

batsabode -

You reference an update to the Sonos software. Is that confirmed?

And just to confirm - currently, regardless of which new LG model you go with, are you unable to pass through atmos from an apple 4k (I'm looking to purchase the LG GX OLED)? It all needs to be through the LG apple tv app?

Also - how does that app compare to the actual apple 4ktv console?

Yup although I cannot speak for Theo led as some people have had success with them depending on the lg software. The screen is ok on lg but I really want to be able to use my aTv otherwise what the **** is the point of having it. I like I can change easily and do searches for show movies across most of the apps on aTv

I have sony 40 inches full hd 1080p tv. With hdmi ARC. And the Sony soundbar with dolby atmos. Will I get atmos if I connect apple tv 4k with directly into soundbar's hdmi in with an hdmi 2.1 complaint cable ( 48 gbps belkin ultra hdmi cable recommended with apple tv 4k) and then *hdmi out* of sound bar to the tv with another hdmi cable . Its not a 4k tv. So if this is the mode of connection, do I still get atmos sound? Obviously can't get 4k resolution.

pghatak,

I'm on a similar thread on the Sonos Community page. One of the contributors is getting Dolby Atmos through his Sonos ARC, streaming content from an Apple TV 4K with a LG E9 TV. He has screenshots and very thorough explanations for everything.

I can't comment personally that it works - but this contributor seems highly credible. I'm getting a new LG GX later this week, so I've been scouring the internet to understand if I would be able to get atmos with the above setup, and his post convinced me it was possible. I can comment if my setup works once I install the TV in a few days.

https://en.community.sonos.com/home-theater-228993/lpcm-eta-for-arc-6842558?postid=16455437#post16455437

Contributor: ewolkoff

It still surprising to me how readers here keep blaming all other equipment when I clearly explained the same setup with exact configuration works fine with any other input source. XBox, or even a $70 Blue ray player from KMart. The problem here is the  TV

Yes it works if you use the app on the lg tv mine does it just doesn’t accept the input from an Appletv as it doesn’t work with LPCM but Sonos said they will update the arc but who know when that could be it might be another 6 months

I am having this game issue with my nano90 55 inch with an arc . I don't get audio on Atmos titles unless I turn off Atmos on apple Tv4k. anyone know if this is an Apple TV issue that hopefully apple may address in their next update.

I think the reason is that anyone who has the oled with EARC it will work I have the nano 90 with EARC and it doesn’t guessing its to do with the pass through and software as I have heard others with oled tv and it works. So not only is mine not working because Sonos doesn’t accept LPCM and apple send out mas signal but also the software and maybe hardware on the oled TVs are different to the nano even if both have EARC

I tried something else and got Atmos to work with the regular HDMI port using roku. That tells me pass through is fine with nano90 tv's. the issue remains with Apple TV 4K not working due to arc not accepting LPCM signals.

atmos from Netflix (and other streaming services) is in lossy format i.e. low bandwidth. It can therefore use the Dolby digital plus carrier to carry the Atmos signal. So it can work over ARC

if your source is using the lossless version of atmos (bought movies / blu ray etc) then the bandwidth requirement is higher and you therefore need e-arc

Hi,

I was following this conversation a while ago as I was planning to get a Sonos Arc + Apple TV 4K + Projector setup but could not figure out a good solution to actually transmit Dolby Atmos signal to the Sonos Arc.

Then today I found out about this device from HDFury, it seems to meet my (and maybe your) requirements: https://hdfury.com/product/4k-arcana-18gbps/

What it does: "WORLD’S FIRST eARC adapter that allows FULL AUDIO up to Dolby Atmos over TrueHD from ANY external HDMI source to ANY eARC sound system".

Available for pre-orders, a bit pricey, but sounds promising.

Phil

Both my sound bar (Samsung Q950T) and TV (LG GX Oled) have eARC port, where it is connected via HDMI 2.1 cable.

ATV 4K is connected to TV, Dolby Vision works on TV, but the sound bar is not getting Dolby Atmos. TV was configured to passthrough audio signal from TV to sound bar via HDMI.

eARC supposed to support high bandwidth, but in this case it is still not working. So is this an issue with ATV 4K??

Hi Everyone - I'm hoping the group can help out.

I've had issues with choppy sound intermittently (1 out every 5 uses or so) coming through my Apple TV4K. I thought it might be the HDMI cord/port, but I switched the port and cord and it was still occurring.

I have a new LG GX with an earc connection that I run to a Sonos Arc. Typically everything works great and I get Dolby Atmos, but every so often, the sound is choppy and breaks up. I usually need to either reset the AppleTV or unplug it.

Has anyone else had a similar issue? Any fixes?

Thanks,

Adam

First and most importantly - thank you for the very quick response @Terry.

Good to know I'm not the only one having this issue. Hopefully, Apple sees this and makes some kind of software update/fix.

Regarding Apple TV on the LG, any reason you'd use that versus the set-top? Are there benefits or cons to either way? Truthfully, I've just continued to use the set-top out of habit, and haven't really utilized the TV app.

Thanks