I just saw a video of someone showing of their kef R3 (non meta) and they had strong woofer excursion (the woofer driver moving in and out). And out of curiosity I checked my R 3 meta and they don’t do that at all. I do hear the bass clearly and pretty strong but almost no visible movement in the woofer.
The video: https://youtu.be/jDb1QswKY8k?si=GTOpNsS1R6zeBVXR
In the comments of the video he says it is filmed with no slo mo camera mode on iPhone.
I there something wrong with my r3 meta?
Could this be an effect similar to wheels turning the wrong direction in old Western movies? You might see a (nonexistent) movement because the membrane moves in frequencies close to multiples of the frame rate, with which the video was shot.