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Contributor I
November 17, 2020

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

  • November 17, 2020
  • 344 replies
  • 32087 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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344 replies

Enthusiast I
January 1, 2021

Confirmed from me on this issue - as expected but it’s good to have more confirmation the issue is real:

 

My Panasonic arrived, and is now paired with a C9 55” and Sonos Arc 5.1 set up. All products are on the latest firmware. I have not been able to move 5.1 or 7.1 audio from the player to the Sonos. DTS output set to PCM conversion and remains at PCM 2.0 48kHz regardless of any menu setting or input content (2.0, 5.0 and 5.1). Dolby Atmos and Dolby Digital are working as expected with bitstream mode all the way to the Arc.

 

Like others on the thread, I have tried multitudes of menu combinations on the C9 and Panasonic. No changes. I included playing with the 4k settings, and disabling upsampling for standard 1080 Blu-ray content. The Panasonic refused to issue different audio from DTS with this mix. I have no other TV format to try, so I have to reply on reports that the Panasonic unit can output 5.1 or 7.1 PCM (or LPCM) from DTS tracks. (not that it matters since I am not changing TVs).

 

As posted earlier, my LG disc player can output correct DTS>MC PCM with the same TV and Arc. That does not ascribe cause just that I have heard it work. The LG-LG devices might offer some advantage here but I would think not much.

 

Like others, I can only conclude the CEC connection is in error. Likely the TV, but it could also be fixable in the Panasonic too. I don’t have an HDFury box which from what I have read will be able to solve the issue.

 

Prodigy II
January 2, 2021

Confirmed from me on this issue - as expected but it’s good to have more confirmation the issue is real:

 

My Panasonic arrived, and is now paired with a C9 55” and Sonos Arc 5.1 set up. All products are on the latest firmware. I have not been able to move 5.1 or 7.1 audio from the player to the Sonos. DTS output set to PCM conversion and remains at PCM 2.0 48kHz regardless of any menu setting or input content (2.0, 5.0 and 5.1). Dolby Atmos and Dolby Digital are working as expected with bitstream mode all the way to the Arc.

 

Like others on the thread, I have tried multitudes of menu combinations on the C9 and Panasonic. No changes. I included playing with the 4k settings, and disabling upsampling for standard 1080 Blu-ray content. The Panasonic refused to issue different audio from DTS with this mix. I have no other TV format to try, so I have to reply on reports that the Panasonic unit can output 5.1 or 7.1 PCM (or LPCM) from DTS tracks. (not that it matters since I am not changing TVs).

 

As posted earlier, my LG disc player can output correct DTS>MC PCM with the same TV and Arc. That does not ascribe cause just that I have heard it work. The LG-LG devices might offer some advantage here but I would think not much.

 

Like others, I can only conclude the CEC connection is in error. Likely the TV, but it could also be fixable in the Panasonic too. I don’t have an HDFury box which from what I have read will be able to solve the issue.

 

 

Have you turned on Viera link on the Panasonic?

"I saw the Stooges and the MC5"
Enthusiast I
January 2, 2021

Confirmed from me on this issue - as expected but it’s good to have more confirmation the issue is real:

 

My Panasonic arrived, and is now paired with a C9 55” and Sonos Arc 5.1 set up. All products are on the latest firmware. I have not been able to move 5.1 or 7.1 audio from the player to the Sonos. DTS output set to PCM conversion and remains at PCM 2.0 48kHz regardless of any menu setting or input content (2.0, 5.0 and 5.1). Dolby Atmos and Dolby Digital are working as expected with bitstream mode all the way to the Arc.

 

Like others on the thread, I have tried multitudes of menu combinations on the C9 and Panasonic. No changes. I included playing with the 4k settings, and disabling upsampling for standard 1080 Blu-ray content. The Panasonic refused to issue different audio from DTS with this mix. I have no other TV format to try, so I have to reply on reports that the Panasonic unit can output 5.1 or 7.1 PCM (or LPCM) from DTS tracks. (not that it matters since I am not changing TVs).

 

As posted earlier, my LG disc player can output correct DTS>MC PCM with the same TV and Arc. That does not ascribe cause just that I have heard it work. The LG-LG devices might offer some advantage here but I would think not much.

 

Like others, I can only conclude the CEC connection is in error. Likely the TV, but it could also be fixable in the Panasonic too. I don’t have an HDFury box which from what I have read will be able to solve the issue.

 

 

Have you turned on Viera link on the Panasonic?

I’ve tried with it both on and off. No luck. It defaults to on and it does not seem to impact the sound output either way.

Prodigy II
January 2, 2021

Bummer. I had the 420 set incorrectly but the player and Panasonic tv sorted it out and gave me stereo playback for DTS tracks with my Playbase when it should have given me silence.

"I saw the Stooges and the MC5"
Prodigy II
January 2, 2021

I wonder if the Panasonic will start your tv and switch inputs?

"I saw the Stooges and the MC5"
Lead Maestro
January 2, 2021

It’s a problem with LG TVs. Either wait for LG to fix it (which may or may not ever happen) or get the HD Fury Arcana. I have an old Panasonic ST60 Plasma and I get multichannel PCM audio playing through the Arc with the Arcana. 

"Receive with simplicity everything that happens to you." - Rashi
Enthusiast I
January 2, 2021

It’s a problem with LG TVs. Either wait for LG to fix it (which may or may not ever happen) or get the HD Fury Arcana. I have an old Panasonic ST60 Plasma and I get multichannel PCM audio playing through the Arc with the Arcana. 

 

Yep, I agree. Would be surprised if LG bothered since they have to focus on their 2020 issues and any upcoming 2021 models. 

 

If I read the HDFury site correctly, the Arcana require me to put it in between the TV and the Arc with the Fury’s HDMI audio output going into the Arc. Then to use my other devices (Tivo and Apple TV), I would have to further add a switcher to get them into the Fury too, right?

Enthusiast I
January 2, 2021

 

 

If I read the HDFury site correctly, the Arcana require me to put it in between the TV and the Arc with the Fury’s HDMI audio output going into the Arc. Then to use my other devices (Tivo and Apple TV), I would have to further add a switcher to get them into the Fury too, right?

 

Actually, in my case, it seems I can pass the other devices through the TV to the Arcana unit via the eARC output. So the LG TV would end up being the switcher in effect. https://www.trustedreviews.com/reviews/hdfury-arcana

 

Might give this a try!

 

Lead Maestro
January 2, 2021

 

 

If I read the HDFury site correctly, the Arcana require me to put it in between the TV and the Arc with the Fury’s HDMI audio output going into the Arc. Then to use my other devices (Tivo and Apple TV), I would have to further add a switcher to get them into the Fury too, right?

 

Actually, in my case, it seems I can pass the other devices through the TV to the Arcana unit via the eARC output. So the LG TV would end up being the switcher in effect. https://www.trustedreviews.com/reviews/hdfury-arcana

 

Might give this a try!

 

As long as you are getting the audio you want passing through your TV from the device, you don’t need to connect it to the Arcana. But if you want to connect multiple devices to the Arcana, it will require an HDMI switch. I have all three of my devices connected to a switch because my TV can only pass through Stereo 2.0 from external devices.

"Receive with simplicity everything that happens to you." - Rashi
Lyricist III
January 2, 2021

So if I purchase the HD Fury Arcana for use with my LG CX, Panasonic UB820-K, and Sonos 5.1 system, then I should be able to get 5.1 surround for DTS Blu-rays via LPCM?

 

My original plan was to swap out my Panasonic for the LG UBK90 but I’d rather keep the Panasonic because of the HDR Optimizer. Also, it seems that on the LG UBK90, you can’t set audio input method for Dolby and DTS separately like you can with the Panasonic, so you would have to switch back and forth between PCM and Bitstream for DTS and Dolby tracks. Annoying.


Has anyone with the same setup as me confirmed that the Arcana solves the issue? According to the Arcana site, they will not accept returns if you use the item and I want to make sure it solves the issue here before purchasing it. 
 

Any insight is appreciated!