The cone, the centerpiece of a loudspeaker, is at the heart of our acoustic engineers' research. Focal's exclusive Polyglass technology involves applying fine glass microbeads to a cellulose pulp cone. This process combines the excellent damping of paper with the rigidity of glass. The rigidity index is almost 10 times higher than that of polypropylene. Adjusting the mass-rigidity-damping ratio results in a remarkable linearity of the frequency response curve, right from the cone design stage. This innovation also significantly increases definition in the midrange.

The inverted dome tweeter has been a Focal signature since 1981; it offers the property of being a true micro loudspeaker. The curvature of the dome is significantly less pronounced than that of positive domes. This allows for better spatial dispersion and offers very low directivity, unlike ribbon tweeters. The inverted dome tweeter therefore generates unrivaled dynamics, allowing sound engineers to very precisely control the compression dosage. The precision of the image (height, width and depth) is remarkable and makes it easy to position each instrument. In addition, in order to perfect the spatialization and further improve the very low directivity of the inverted dome, a waveguide was developed. In the horizontal plane, the frequency response is within a deviation of +/- 0.5 dB. This performance guarantees an incredibly stable soundstage.