Beryllium and health.

[Nacho]

Ja ja ja. Good answer. But read that take from jmlab's utopia manual:

The loudspeakers use a pure Beryllium inverted dome tweeter that extends the bandwidth up to 40kHz. Because of the Beryllium potential dangerousness, the material that constitutes the tweeter, some safety instructions described below must be followed by the user of the loudspeakers in order to avoid any risk of this material absorption. However, the risks are extremely limited in its solid form, as the product dangerousness is linked to the inhalation, absorption or contact of vapours or micro-particles.
1. Safety instructions
The Beryllium dome must never be in contact with abrasive material.
You must avoid any contact with the skin or the eyes, any inhalation or ingestion of the whole or a part of the Beryllium dome. The manufacturer underlines that the Beryllium absorption by respiratory, digestive tracts or skin can lead to serious physical troubles, because of its high toxicity for man. We then recommend to the loudspeaker users to carefully keep the tweeter protection grille in place. If the protection grille is removed, the user will have to carefully replace this grille after use. Generally speaking, children must be kept away from loudspeakers and especially from the Beryllium dome.
2. In case of dome damaging
If the Beryllium dome is damaged in any possible way, you must cover it as soon as possible on all its surface with the supplied protection adhesive tape. We recommend that you contact the retailer so that a competent department will take off and replace the tweeter. If the dome is broken, the possible Beryllium particles must be carefully collected with the supplied protection adhesive tape and then be placed in a hermetically sealed plastic bag. It will be sent with the loudspeaker to the retailer. In case of absorption by skin, eye projection or in case of inhalation or ingestion of Beryllium, see a doctor.
3. End of life for loudspeakers - Information
At the end of the loudspeaker life, you must not throw this product in the environment, but you must take it to an adapted recycling center. For more information, please contact us directly to the following address: beryllium@focal-fr.com