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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G

GuitarSuperstar

Lead Maestro

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?

What are your Blu-ray player audio settings currently set to?

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

R

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?

What are your Blu-ray player audio settings currently set to?

Ahh, I think I’ve cracked it!!

Player settings (UB820):

DTS/DTS-HD - Bitstream

BD-Video Secondary Audio - Automatic

LG B9 settings:

Digital Sound Out - Passthrough

eARC - Off

Turning the eARC off seemed to be the thing that pushed it over the line. I haven’t tried DTS:X Blu Rays yet, but my DTS-HD 5.1 and 7.1s are now showing as ‘DTS Surround 5.1’ instead of the old ‘Stereo PCM’. They sound gorgeous!

Wow, I have no idea whether turning off eARC is gonna cause other problems for me, but I can’t believe I finally have DTS surround sound, with the UB820 as well!

G

GuitarSuperstar

Lead Maestro

@Robboadam Glad you got it working. I would also turn off the Secondary Audio setting on the UB820. This needs to be turned off if you want to get Dolby Atmos audio from Blu-ray discs.

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

R

Robboadam

Trending Lyricist I

@Robboadam Glad you got it working. I would also turn off the Secondary Audio setting on the UB820. This needs to be turned off if you want to get Dolby Atmos audio from Blu-ray discs.

So I kept it on Automatic, put in an Atmos Blu ray, and got Atmos through.

The only downside so far is that turning off eARC gives me DD+ Atmos rather than TrueHD. But I don’t think I really notice the difference with my setup.

B

benadderson

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?

What are your Blu-ray player audio settings currently set to?

Ahh, I think I’ve cracked it!!

Player settings (UB820):

DTS/DTS-HD - Bitstream

BD-Video Secondary Audio - Automatic

LG B9 settings:

Digital Sound Out - Passthrough

eARC - Off

Turning the eARC off seemed to be the thing that pushed it over the line. I haven’t tried DTS:X Blu Rays yet, but my DTS-HD 5.1 and 7.1s are now showing as ‘DTS Surround 5.1’ instead of the old ‘Stereo PCM’. They sound gorgeous!

Wow, I have no idea whether turning off eARC is gonna cause other problems for me, but I can’t believe I finally have DTS surround sound, with the UB820 as well!

I can confirm this also worked for me. Beam Gen 2 (with the DTS update), UB820 and LG C9.

UB820 set to bitstream DTS. With the C9 set to eARC on, playing DTS-HD gives the unsupported audio format error. Setting it to off causes the TV to pass the core 5.1 DTS to the Beam.

i was disappointed that the Sonos update wasn’t sophisticated enough to detect the HD stream, but then just play back the lossy core. But this at least gives me a simple workaround, without the need for extra hardware.

Hopefully this will improve with further Sonos updates. Fingers crossed this is just the beginning, and that HD and X are on the roadmap to come!

P

Parkerdip

Lyricist III

I don’t get it I have tried exactly what is said and I have the LG C9 and UB820 with the Sonos Arc and I am still getting no sound with the unsupported tv audio message.
I tried the above and turning EARC off and nothing…

R

Robboadam

Trending Lyricist I

I don’t get it I have tried exactly what is said and I have the LG C9 and UB820 with the Sonos Arc and I am still getting no sound with the unsupported tv audio message.
I tried the above and turning EARC off and nothing…

There may be a few other settings you need to tweak with. Do you wanna post your settings and we can take a look?

P

Parkerdip

Lyricist III

I don’t get it I have tried exactly what is said and I have the LG C9 and UB820 with the Sonos Arc and I am still getting no sound with the unsupported tv audio message.
I tried the above and turning EARC off and nothing…

There may be a few other settings you need to tweak with. Do you wanna post your settings and we can take a look?

These are the settings that I have tried to match what was said above but doesn’t seem to be doing anything for me

B

benadderson

Lyricist I

I don’t get it I have tried exactly what is said and I have the LG C9 and UB820 with the Sonos Arc and I am still getting no sound with the unsupported tv audio message.
I tried the above and turning EARC off and nothing…

There may be a few other settings you need to tweak with. Do you wanna post your settings and we can take a look?

These are the settings that I have tried to match what was said above but doesn’t seem to be doing anything for me

At first glance the main difference I see between your settings and mine is that I have BD-Video Secondary Audio set to off. Perhaps give that a try, to see if it helps.

P

Parkerdip

Lyricist III

I don’t get it I have tried exactly what is said and I have the LG C9 and UB820 with the Sonos Arc and I am still getting no sound with the unsupported tv audio message.
I tried the above and turning EARC off and nothing…

There may be a few other settings you need to tweak with. Do you wanna post your settings and we can take a look?

These are the settings that I have tried to match what was said above but doesn’t seem to be doing anything for me

At first glance the main difference I see between your settings and mine is that I have BD-Video Secondary Audio set to off. Perhaps give that a try, to see if it helps.

That’s weird I’ve just turned it on to give it another try and it’s sorted itself out without me doing anything. I tried BD audio on off and auto and the only one where it worked is having it on . Also turned EARC back on and still works.

does having it on affect the Dolby Atmos discs and have to turn it back off?

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