Diablo Utopia Colour Evo

By developing and manufacturing its own membranes, Focal pushes the limits of innovation in acoustics. The sandwich "W" membrane of the loudspeakers plays an essential role in sound reproduction. It consists of two sheets of glass placed on either side of a central foam body; a sandwich construction that enables us to master the three key parameters of a good loudspeaker: lightness, rigidity and damping. This flagship membrane of Focal know-how perfectly optimizes the frequency response curve, providing low distortion and total listening transparency. Sound is the ultimate in precision.

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 performance of a loudspeaker is directly related to the magnetic energy transmitted by the magnet. To develop high-performance woofers, our engineers created the multi-ferrite magnet, or Power Flower™ technology, which brings together several stacked ferrite rings distributed around the central core. This technology combines very high magnetic energy transmission, for tenfold power handling, with optimal cooling of the loudspeaker: the spacing between the blocks allows free circulation of hot air, ensuring unrivalled ventilation of the coil. As it heats up less, it no longer represents a limitation on power, even after prolonged listening at high sound levels. Another advantage is that the coil is decompressed because it is totally open-back to the outside: distortion, linked to mechanical compression phenomena, is considerably reduced. This technology has been an exclusive Focal signature for many years.

As the surface area of a loudspeaker cabinet is greater than that of the loudspeaker diaphragms, it can radiate sounds that are distorted by the resonances of the cabinet structure. This alters reproduction and blurs the sound image. To prevent such "interference", it is essential that the cabinet is as inert as possible, that it is not emissive. At Focal, we use MDF (Medium Density Fiber) to achieve this inertia. This stable, heavy structure is anti-vibration. It has been optimized by vibratory mapping of the loudspeaker walls to reinforce or modify the structure wherever a weak point appeared.