I’ve tested this multiple times with different audio channel checks and changing the level of the surround in the Sonos app only affects the side surround channels, not the rear surround channels.

I’ve unpaired and repaired the Era 300s to the setup and no matter whatever way I try it, the rear surround channels do not change volume.

I find the rear channels much too quiet and there’s seemingly no way to change it. I’m not sure how no one else has mentioned this (unless I missed it).

I’ve done it with and without Trueplay, different channel checks, unpaired and repaired surrounds, etc. The rear surround channels will not change volume unless I raise overall volume which then of course still leaves them quieter relative to everything else.

Please tell me someone else has noticed this. I’m on 15.2 so it’s not like I’m missing a software update.

Set up is Arc, Sub x2, 300 x2. Any help or input is appreciated. Thank you!