I have a Sonos Playbar with two Play 1’s in surround mode, tied via optical cable to my Sony TV.  When using the normal feed of Dish TV receiver via my TV, everything audio works just fine.  But when I’m feeding streamed content via the Apple TV, I struggle to get sufficient volume going out of my Sonos surround.  I found at one time, that resetting volume to zero with the Apple TV remote would get things going. Now it seems like the audio signal from the Apple TV is just weak.. and I have to separately crank up the Sonos volume with the TV remote volume control or my Sonos controller.

Suggestions would be greatly appreciated.