When I first installed PlayBase the normal volume setting on TV was between 25 and 30. The volume emanating from PlayBase has been steadily decreasing over time. To match the previous output level I now need to set TV volume at 85 to 95. I've made no changes to settings on either, the Sonos Playbase or the Sony TV set.
What to do? There isn't much more room to go up on the TV volume settings and it's already on the quiet side for music listening. Is there a way to test if all speakers/drivers are stil working?