Apple TV 4K, Sonos Arc and Dolby Atmos

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

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 have been trying for months with my LGNANO91 65" TV (2020 model that I got at Costco) to play Dolby Atmos with my AppleTV 4K and today I finally got it. I tried changing the "HDMI Input Audio Format" on the TV from PCM to Bitstream. With "Digital Sound Out" set to "Pass Through", and eARC enabled, I finally got Atmos. This may be due to the newer software that LG dropped a few weeks ago. I think I forgot to test PCM vs Bitstream at that time (I had been on PCM). Also, I'm a beta user of Apple tvOS in case that changed anything. Here's the software on my devices right now that give me Dolby Atmos on my AppleTV 4K:

LG: 03.10.60

tvOS: 14.0 (18J5385a)

Sonos (on my ARC): 12.0.5 (build 58180080)

For me I am on 3.10.43 (LG OLED GX), as this is the latest firmware released on 20th August 2020. I must choose AUTO instead of PASS THROUGH in DIGITAL SOUND OUT in order to get ATMOS on my Samsung Q950T sound bar. Yea, BITSTREAM was used since day one.

However, I am on TvOS 13, noticed you are on TvOS14. Hopefully when TvOS 14 is officially released I can try to choose PASS THROUGH and see if it enable ATMOS on my sound bar or not.

Thank you for the update, cheers!

As of today, I can confirm you can use the Sonos Arc without eARC (well for my TV anyway).

I have the Sonos Arc + Sub + (2) Surround Sonos Play:1.

The system is connected through ARC to a a 2015 Samsung JS8500.

An Apple TV 4K is connected to the Samsung.

Likely no support for Atmos, although the whole system does play sound properly in 5.1 DTS, and produces a very spatial and pleasing sound. I did have to change some settings on the Samsung TV (either swap from Bitstream to PCM, and switch to 5.1 DTS) to get the Sonos Arc to produce sound. Apple TV is left on Auto for the Audio.

I'm planning to add an HDFury 4K Arcana 18GBPS to fully support Dolby Atmos with that system, which will add real eARC capability to my setup-so no need to buy a whole new TV hopefully!

I have a Sonos beam Apple TV and a projector. Sonos support told me that combination would not work. I bought a spitter. Apple TV goes in splitter. One out goes to projector and another out straight to the sound bar. Works perfect. I called today about the arc and the salesman told me it will not work without a tv. I’m going to try this anyway tomorrow and if it works I will update. If not I’ll return the arc. It has a 45 day satisfaction guarantee.

Wiring:

1) ATV to TV HDMI port

2) TV ARC HDMI port to Sound Bar

ALSO, I totally solved ATV volume symbol not showing on TV as you vary volume with ATV Siri Remote (+ or — button)

Note:

** symbol shows using TV Remote *and* using Cable Remote - but not with ATV Remote when your Sound Bar is Sonos. ATV doesn’t see Sonos Sound Bar.

** Shows everywhere if you have a non-Sonos Sound Bar,

1) leave Sonos app as is with your unique Speaker System names

2) leave ATV preferences alone, including its INCORRECT designation of Default Audio System = TV Speakers. ATV doesn’t see the Sonos Sound Bar.

3) while watching a ATV streamed video, using the ATV Siri remote, swipe down from top and you will see 

a) TV Speakers = incorrect Default Audio System

b) your unique Sonos Speaker System name

Select (b) and a MIRACLE happens

✌️😳✌️

John Love

The Sonos ARC will work over just ARC and you will receive Dolby Atmos for streaming services like Apple TV or Netflix or Prime.. etc. Your TV must support Atmos. However, you would not be able to get Dolby Atmos TrueHD. ( a tad step up ) ... That’s only offered on on devices through BlueRay and what not..and it will only pass through with an eARC. ( enhanced ARC )

I disagree it Sonos arc accepted LPCM it would be fine

Hi radissson, Have you tried to change the digital output to Bitstream? And the Dolby Digital + as well.