Woofers don't move at all when music is playing

[kameraguy]

Agreed that the Devialet videos make you think the woofer excursion looks like that all the time. But you really need to push them at louder volumes to see them in action. I thought the same as the OP until I cranked up some bass heavy tunes over 60.

I still wish there was a "loudness" setting for lower volumes.