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Question

PCM stereo on Panasonic UB-820 with Arc Ultra

  • August 26, 2026
  • 10 replies
  • 53 views

Hello, I take the liberty of asking you because I have a fairly well-known problem that I can't solve.

I bought a Sonos Arc Ultra and 2 Era 300 and here is my equipment:

-LG OLED 65C1

- Panasonic UB820 Blu-ray Player

-PS5

-Apple TV 4K

On my Panasonic UB-820 player, Dolby Atmos and Dolby Digital work perfectly but DTS-HD does not convert to PCM 5.1, it is indicated in PCM Stereo!

My PS5 can convert DTS audio to LPCM 5.1, and it sounds great!

Can anyone help me with this problem? Thank you.

10 replies

  • August 26, 2026

A recent discussion of the same issue:

 


Airgetlam
  • August 26, 2026

You’ve searched these forums for the Panasonic? As near as I can tell, Sonos doesn’t handle DTS-HD, so you’ll need to change the signal, either in the Panasonic’s settings, or the TV's settings.

Here is a longish thread which might be of some assistance, but there are more:

 


106rallye
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  • August 27, 2026

LG might also not do DTS.


  • Author
  • Contributor I
  • August 27, 2026

Thanks for the answer !

I lnow that LG cannot do DTS-HD or DTS:X like Sonos but i wan’t PCM multichanel 

Ok with my PS5 but not with my Panasonic UB-820 why ?


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  • Prodigy II
  • August 27, 2026

In the 820s audio settings set DTS to PCM rather than bitstream. 


  • Author
  • Contributor I
  • August 27, 2026

It’s done with 820s audio settings and also with my LG C1 with the setting « passtrough » activate and it’s the same thing…


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  • Prodigy II
  • August 27, 2026

Perhaps the TV can’t pass LPCM. 
 

 


  • Author
  • Contributor I
  • August 27, 2026

The problem that it’s work with my PS5 with have the multichannel !

 

I think the problem is between the LG C1 and the UB-820


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  • Prodigy II
  • August 27, 2026

My TV is an LG G4. It’s audio settings are set to auto. 


  • August 27, 2026

In the discussion link that I posted above, the OP had this to say:

Hallelujah! Thanks everyone for the help. Although I had configured the Blu-Ray to output PCM for DTS and the TV to output Bitstream, I missed turning on eArc support on the TV. I guess I assumed all I had to do was connect the Arc to the eArc HDMI port. I was clued in to this TV setting tweak by @GuitarSuperstar’s reply in DTS-HD 5.1 4K discs suddenly no sound. Now my Sonos app is showing glorious Multichannel PCM 7.1 and it sounds great, even if it isn’t quite DTS HD.

 

Update: on a whim, I went back into the Blu-Ray’s settings and set it to output Bitstream instead of PCM. I still got Multichannel PCM 7.1 successfully.