It’s the difference between “TV mode” and “music mode”.
When streaming from Plex, you are probably streaming directly from the Sonos app which means you are in music mode. The reason why the surround speakers sound louder is because you probably have Music Playback set to FULL under the Surround Audio settings which results in full stereo playback from both the sound bar AND surround speakers. In music mode, the Sonos app doesn’t usually display the audio format (unless you are streaming Dolby Atmos music from Apple Music). The Speech Enhancement and Night Sound features are also not available in music mode.
When playing a Blu-ray disc, you are in TV mode which means the sound bar will play what is determined to be ambient audio from a stereo source out of the surround speakers rather than full stereo playback. The reason for this is because the Sonos sound bar is designed to up-mix a 2-channel stereo TV source and make it sound like it’s in 5.1 surround. The Sonos app will also always display the audio format in TV mode. Speech Enhancement and Night Sound features are also available in TV mode.
Hi
Thank you for the reply.
Is it possible to switch to music mode when using bluray?
Sorry, but no, it is not.