Contributor I

LG C9 + Arc + UB820 / Multichannel PCM for DTS Blu-Ray discs

Forum|Forum|5 years ago
November 17, 2020
344 replies
32091 views

I’m running an LG C9 with a Panasonic UB820 Blu-ray player, Sonos Arc + Sub gen 3 + One SL surrounds. The lack of DTS support on the Arc has been frustrating for non Dolby encoded Blu-ray discs, so I have been eagerly awaiting the multichannel PCM update.

It’s finally arrived (thanks, Sonos!) and I tried playing a DTS encoded Blu-ray and… no dice. Still stereo PCM 2.0. Has anyone running a similar set-up managed to get 5.1 PCM output from the Arc?

The C9 supports eARC and multichannel PCM, I’m using 48gbps HDMI cables that support up to 8k60Hz, all of the devices are up to date, I have the C9 set to PCM with eArc enabled, DTS output set to PCM on the UB820… I’m really at a loss here. Any ideas or suggested settings?

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geek-god

Trending Lyricist I

I think someone else said they had a C9 in this thread and that it does still support DTS passthrough, so it might work for you. Unsure what DTS formats the Sonos Arc/Beam will support though…they may not support DTS-HD Master or DTS:X.

correct, LG took off DTS support from CX and newer TV’s so C9 should be fine.

AC and Beam will only support regular DTS, No DTS-HD or DTS-X right now.

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Robboadam

Trending Lyricist I

I think someone else said they had a C9 in this thread and that it does still support DTS passthrough, so it might work for you. Unsure what DTS formats the Sonos Arc/Beam will support though…they may not support DTS-HD Master or DTS:X.

correct, LG took off DTS support from CX and newer TV’s so C9 should be fine.

AC and Beam will only support regular DTS, No DTS-HD or DTS-X right now.

Sweet, does that extend to the B9 too? I’d take any DTS support for now, tired of PCM 2.0 for my Blu Rays

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GuitarSuperstar

Lead Maestro

I think someone else said they had a C9 in this thread and that it does still support DTS passthrough, so it might work for you. Unsure what DTS formats the Sonos Arc/Beam will support though…they may not support DTS-HD Master or DTS:X.

correct, LG took off DTS support from CX and newer TV’s so C9 should be fine.

AC and Beam will only support regular DTS, No DTS-HD or DTS-X right now.

Sweet, does that extend to the B9 too? I’d take any DTS support for now, tired of PCM 2.0 for my Blu Rays

The B9 supports DTS passthrough so you should be able to get the core DTS 5.1 track to play from Blu-ray discs.

"Receive with simplicity everything that happens to you." - Rashi

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dandiego

Lyricist I

Panasonic just pushed out a firmware update to their 4K Blu-ray players, including the UB820. I don’t think this will have any effect on the UB820 multichannel LPCM via eARC issue with LG OLEDs, but I’m curious if anyone is able to test. Thanks

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Robboadam

Trending Lyricist I

Panasonic just pushed out a firmware update to their 4K Blu-ray players, including the UB820. I don’t think this will have any effect on the UB820 multichannel LPCM via eARC issue with LG OLEDs, but I’m curious if anyone is able to test. Thanks

I can confirm it hasn’t changed anything.

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dandiego

Lyricist I

Panasonic just pushed out a firmware update to their 4K Blu-ray players, including the UB820. I don’t think this will have any effect on the UB820 multichannel LPCM via eARC issue with LG OLEDs, but I’m curious if anyone is able to test. Thanks

I can confirm it hasn’t changed anything.

Darn. Thanks for checking.

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LBJ2

Lyricist III

OK, I have confirmed that multichannel PCM is coming through the Arc after unplugging the power cord for a few seconds.

My Sonos system is Arc + 2 x One SLs + Sub (Gen 3).

I have a Sony ubp-x800m2 UltraHD player → LG 65 inch CX OLED TV (2020 model). The LG is connected to the Arc via HDMI 2 (the eArc port).

For testing, I’m using the Saving Private Ryan (Sapphire Series) blu-ray which has English 5.1 DTS-HD MA.

Settings

Sony

Digital Audio Out: PCM (rather than bitstream)

LG

eArc: ON

HDMI Audio Input: Bitstream

Digital Audio Output: Pass Through

The Sony display says “LPCM 5.1”, while the Sonos app says the sound is Multichannel PCM 7.1. I’m guessing it’s not actually 7.1, but I’m also just glad that I can get multichannel PCM without having to wait for a firmware fix or Arcana. All those DTS 5.1 tracks can now be utilised!

Hope this helps. And hopefully this solves the issue permanently.

Such a relief! Woot Woot! Been fiddling too long to figure this out with the LG OELD CX + Sonos Arc/One SLs/Gen 3 Sub + Panasonic DP-UB820EB Bluray player and I didn't want to ship the HDFury Arcana from Asia just to see if I could get multichannel PCM with the LG CX eARC on my Sonos systems for my brand newly released 4K HDR Blurays that seem to come with DTSxx only ( no Atmos).

I saw your post and decided to buy the less expensive Sony UBP- X700M 4K Ultra HD Blu-ray Player as experiment. Amazon offered same day shipping and VIOLA. Multichannel PCM 7.1 for these brand new 4K HDR Blurays that keep coming in DTS xx only. Multichannel PCM 7.1 is SO MUCH better than Stereo PCM through the Sonos Arc.

So many threads, and reading so many comments and I just happened to bump into yours here. I don't know why but seems the Panasonic DP-UB820EB Bluray player does not want to play Multichannel PCM 7.1 with the Sonos Arc system only miserable Stereo PCM for DTS xx. Clearly its not the LG OLED CX, but the Panasonic DP-UB820EB.

Merci!

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Lima21

Lyricist I

I have a LG E9 (basically a C9) and a Sonos Arc. Set up is working correctly and normal settings, eARC on and pass through on, Dolby Atmos working correctly.

I have a USB with a couple of films that have DTS and am using the internal LG video player. I can’t get it to output in surround sound, I will get silence in Pass Through (as expected) and Auto. Changing to Digital Sound Out to PCM will give sound but only Stereo PCM 2.0.

Any ideas how to get surround sound or is it just wait for the DTS Sonos update? I have a Apple TV 4K, Chromecast Ultra, MacBook Pro and PS5 at my disposal if that helps. Need to get a Blu-ray player?

Edit: Used MacBook Pro via HDMI with Infuse app with eArc on and Pass Through and it seems to be giving PCM 7.1 (definitely sounds a lot better at least). PCM and Auto give Stereo PCM 2.0

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LBJ2

Lyricist III

I have a LG E9 (basically a C9) and a Sonos Arc. Set up is working correctly and normal settings, eARC on and pass through on, Dolby Atmos working correctly.

I have a USB with a couple of films that have DTS and am using the internal LG video player. I can’t get it to output in surround sound, I will get silence in Pass Through (as expected) and Auto. Changing to Digital Sound Out to PCM will give sound but only Stereo PCM 2.0.

Any ideas how to get surround sound or is it just wait for the DTS Sonos update? I have a Apple TV 4K, Chromecast Ultra, MacBook Pro and PS5 at my disposal if that helps. Need to get a Blu-ray player?

Edit: Used MacBook Pro via HDMI with Infuse app with eArc on and Pass Through and it seems to be giving PCM 7.1 (definitely sounds a lot better at least). PCM and Auto give Stereo PCM 2.0

Glad you found a solution. Once you hear the good stuff, Stereo PCM 2.0 can be painful for movie watching.

DTS: I didn't know what I didn’t know!

Thankfully there is an army of frustrated consumers buying up all these new 4K TVs on many forums across the internet many suffering the same and presenting discovered work/arounds that will work for some of us but not all.

Worse many of these new 2021 4K UHD remastered Blu-ray movies are only DTS or some form of DTS.

Problem solved if we all just stream 4K UHD digital movies instead of buying physical discs. At least we get some form of room filling Surround Sound if Dolby Atmos is not available. And these new 4K TVs make streaming digital 4K UHD look very, very good with HDR and/or Dolby Vision applied. Not physical disk level of data, but so very good I can see many skipping physical altogether going forward.

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Robboadam

Trending Lyricist I

Hey everyone, so I’m a long time lurker/contributor of this thread.

I have a B9 instead of a C9/X, and I understand it has DTS pass through support. So I expected today’s update with DTS support from Sonos to finally mean I no longer need to listen to my Blu Rays in Stereo PCM.

Unfortunately, no luck at all :( I don’t understand why it’s still not giving me DTS of anything better than stereo. Can anyone suggest any steps to take?

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