I bought a pair of Focal Sopra No2 speakers from France when they were a brand new model. They have beryllium tweeters, and I'm guessing the EU has regulations about notifying customers when a product contains potentially hazardous materials, with warnings not to touch the drivers with bare hands.
I jokingly asked my dealer if I should refrain from listening at high volumes, that it might vaporize the beryllium, funny thing, he thought I was serious!
I jokingly asked my dealer if I should refrain from listening at high volumes, that it might vaporize the beryllium, funny thing, he thought I was serious!