Enthusiast II

wrong channel on LPCM after recent update

35 replies
2364 views

When playing DTS audio from my OPPO 203 BluRay , I get multi PCM 7.1 but then the vocal sound is outputted at the rear speakers. It wasn't like that prior to the recent update. Anyone can help ?

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xTommySimmons

Lyricist I

Hmmm

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jay.fisher5

Lyricist II

I too am having the same problem with an A90J. Any LPCM content from my Plex server playback through any device attached to the TV, is sending the Front Left and Right channels to the Rear speakers and playing rear channels on the soundbar. DD and Atmos are fine, but sadly anything with DTS or even 5.1AAC is causing the issue for me.

If i Turn eArc off the problem goes away, re-enabling eArc it returns. I could've swore for a few days everything was fine then this started happening and I’m about to try some factory resets myself to see if I can get it back in working order

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jay.fisher5

Lyricist II

I just chatted with Sonos support on this after performing a factory reset and still having the problem, sadly they have no known issues regarding the A90J and LPCM audio playback issues and said I’d have to call in to be escalated to level 2 to continue more troubleshooting.

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Paul TsangAuthor

Enthusiast II

FlatpanelHd already informed sony and they are aware of the issue and will provide a firmware fix. Not sure when but it will come. They admitted EARC is bugged. So it's not Sonos problem .

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jay.fisher5

Lyricist II

Interesting when I called Sony they blamed Sonos. Glad to see someone got them to look into this.

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heixinbing

Lyricist II

I am hving the same issue with my new X90J as well! Turn off the eARC mode the issue goes aways (but DD 5.1+ instead of PCM 5.1 or 7.1), and comes back after re-enabling the eARC mode(show up PCM 5.1 or 7.1 in app), then he center vocal voice just outputs from the rear surround!

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Naekyr

Enthusiast II

I too am having the same problem with an A90J. Any LPCM content from my Plex server playback through any device attached to the TV, is sending the Front Left and Right channels to the Rear speakers and playing rear channels on the soundbar. DD and Atmos are fine, but sadly anything with DTS or even 5.1AAC is causing the issue for me.

If i Turn eArc off the problem goes away, re-enabling eArc it returns. I could've swore for a few days everything was fine then this started happening and I’m about to try some factory resets myself to see if I can get it back in working order

I've encountered this before. This is caused by your TV passing through LPCM in 7.1 format instead of 5.1 format. Currently downmixing doesn't work on the ARC, pending a future fix, so anytime your TV passes 7.1 audio to the ARC it will mess up your surround channel audio

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heixinbing

Lyricist II

I too am having the same problem with an A90J. Any LPCM content from my Plex server playback through any device attached to the TV, is sending the Front Left and Right channels to the Rear speakers and playing rear channels on the soundbar. DD and Atmos are fine, but sadly anything with DTS or even 5.1AAC is causing the issue for me.

If i Turn eArc off the problem goes away, re-enabling eArc it returns. I could've swore for a few days everything was fine then this started happening and I’m about to try some factory resets myself to see if I can get it back in working order

I've encountered this before. This is caused by your TV passing through LPCM in 7.1 format instead of 5.1 format. Currently downmixing doesn't work on the ARC, pending a future fix, so anytime your TV passes 7.1 audio to the ARC it will mess up your surround channel audio

The actual is any non-Dolby Atmos DD5.1 will output as PCM 5.1/7.1 and mess up the surrund channel, I tested below:

(Apple TV 4K, Sony X90J eARC mode ON and with April update patch, Infuse 7 Pro player)

Dolby Digital 5.1/7.1 = PCM 5.1/7.1 = mess up

Dolby Atmos TrueHD 7.1 = PCM 7.1 mess up

DTS = PCM 5.1/7.1 = mess up

ETC...

S

solid1113

Lyricist I

I got exactly the same issue with my a80j. After I set it to Dolby 5.1 then it is fine. So it is sonos's issue then.

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heixinbing