Membrane shape and materials are essential for high-fidelity reproduction. For exceptional treble, our engineers have developed the Béryllium inverted dome tweeter in pure Beryllium. Thanks to its unrivalled rigidity, Beryllium is the material of choice for high-frequency loudspeakers. Developed and patented by Focal, the pure Beryllium inverted dome is capable of covering more than five octaves (1,000 - 40,000 Hz) for perfect perception of micro-details.

The diaphragm, the central element of a loudspeaker, is at the heart of our engineers' research. For loudspeakers designed for outdoor use, we had to design a membrane that would deliver both sound performance and environmental resistance. The result is the Fiber IP membrane, a sandwich cone made of non-woven glass fibre. The sandwich layers increase damping and offer greater versatility. For even greater durability, this membrane is certified IP65, an international standard attesting to its soundproofing and resistance to dust intrusion.

As specialists in loudspeaker diaphragms and tweeters, our acoustic engineers work as much on materials as on cone shapes. That's what they've done with the famous inverted dome tweeter, which they've further developed with a new "M" shape that offers two decisive advantages: even lower sound directionality, for an ever more flexible listening position, and a significant gain in stiffness for the dome, which further reduces distortion and thus delivers quality sound.