The photo of the midrange driver looks like the dust cap has partly debonded from the speaker cone. I was advised that early B1s had a bit if an issue with this
(mine are recent) but they changed the adhesive and problems are less common.
I had a debonding event with one of my midrange drivers but in my case gravity or inertia from normal operation got the better of the adhesive and it popped off. Small children acting the goat should be kept well away from these speakers. Damage is fine on a $20 dollar pair of computer speakers, not fine on a $20k plus speaker. The driver was replaced under warranty. The issue you will find if it does detach is that it is aluminium foil thin. It makes it almost impossible to handle the dust cap without some sort of damage.
Great performance but ultra low mass has its disadvantages.
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