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.

If the material of a membrane is essential, so is its shape. Focal engineers worked on an "M" profile for the glass fibre "W" membrane. This "M" profile is the fruit of many years of research and our expertise in membrane geometries. Produced in a single piece (without a core cover), it achieves, among other things, a significant reduction in harmonic distortion, better sound dispersion and optimal power handling. A major Focal innovation that can be found on many products.

At the rear of the diaphragm is the spider, which holds the lower part of the cone in place. By working on this essential element of the loudspeaker, and in particular by developing a spider with a progressive profile, our engineers have achieved better damping of the sandwich cone's movements, greatly enhancing the linearity, precision and dynamics of the sound.