Contributor I

Answered

Muffeld sound from rears during Tv 2.0

13 replies
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So, I've got the Arc and Sub, connected to a LG C9, and input via Apple Tv 4K. Just added two Ikea Symfonisk as rears, and it does work, somewhat.

I get nice Atmos, full surround when the input ( as acording to the sonos app ) is 5.1, 7.1 and so on, but when the input is 2.0, I do get some muffeld sound from the rears.

I know this is a "feature" when you are streaming audio to your system, but as far as I can see, it should not do so when recieving input from the Tv.

Is this intended by sonos, and if so, can it be turned off in some hidden setting somewhere?

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GuitarSuperstarAnswer

Lead Maestro

This is from Sonos...

”If the source you’re playing isn’t in 5.1 already, your Sonos home theater speakers will perform an audio up-mix of the stereo signal to create a simulated surround sound. This means you’ll still hear most audio out of the front channels, but the rear left and right speakers will play what we determine to be ambient audio. This is most obvious in action scenes and with movies that have intense soundtracks.”

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

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GuitarSuperstar

Lead Maestro

Is the sound from the surround speakers actually “muffled” or is it just not as loud? It is normal for the audio from the surround speakers to be lower when watching a stereo source. You can adjust the surround levels on the Sonos app if you want it to be louder/softer or disable the surrounds completely.

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

MKH1972Author

Contributor I

I You can adjust the surround levels on the Sonos app if you want it to be louder/softer or disable the surrounds completely.

I know of this, but my point is, when there is 2.0 playback, no sound should come from the rears at all. And I should not have to maually turn surround off to get correct playback of this signal type. ( and back on for 5.1 input )

Thus I wonder, if there is a setting, maybe somwhat misnamed, that will remove any playback from rears while in 2.0 input mode?

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GuitarSuperstar

Lead Maestro

As far as I know there isn’t a setting within the Sonos app that can do that. You could always request that feature to be added.

From my experience on this forum, most users, including myself, actually prefer hearing audio out of the rear surrounds while playing stereo content. We feel like it actually enhances the sound.

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

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camillo777

Headliner I

With our stereo TV sound you should not hear sound from surround speakers if they are in surround mode (not only grouped with playbar). Maybe your Apple TV is doing some sort of virtual surround?

MKH1972Author

Contributor I

With our stereo TV sound you should not hear sound from surround speakers if they are in surround mode (not only grouped with playbar). Maybe your Apple TV is doing some sort of virtual surround?

If the ATV4K did something, the sonos app would not show 2.0, right?

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GuitarSuperstar

Lead Maestro

A have an Apple TV 4K, Roku Ultra, and Panasonic UHD player and they all play audio out of the surround speakers when watching stereo 2.0 content.

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

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camillo777

Headliner I

Does the Sonos app say pcm stereo or dolby stereo?

MKH1972Author

Contributor I

Does the Sonos app say pcm stereo or dolby stereo?

Petty sure its PCM 2.0, but why should that matter?

G

GuitarSuperstarAnswer

Lead Maestro

This is from Sonos...

”If the source you’re playing isn’t in 5.1 already, your Sonos home theater speakers will perform an audio up-mix of the stereo signal to create a simulated surround sound. This means you’ll still hear most audio out of the front channels, but the rear left and right speakers will play what we determine to be ambient audio. This is most obvious in action scenes and with movies that have intense soundtracks.”

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

MKH1972Author

Contributor I

This is from Sonos...

”If the source you’re playing isn’t in 5.1 already, your Sonos home theater speakers will perform an audio up-mix of the stereo signal to create a simulated surround sound. This means you’ll still hear most audio out of the front channels, but the rear left and right speakers will play what we determine to be ambient audio. This is most obvious in action scenes and with movies that have intense soundtracks.”

Thank you. Too bad it can’t be turned off though.

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