Paper cone with a unique Nextel top coating combined with a back coating for extra damping gives an unparalleled smooth and detailed paper cone sound. FEA optimised magnet system with precisely fitted copper parts represents the state-of-the-art regarding linearity and low distortion. Titanium voice coil former with a long copper clad aluminium winding for excellent force transfer, transient sound reproduction and large linear excursion. A unique adaptive rubber surround reduces radial resonances and prevents surround break up at large excursions. Low mechanical and electromagnetic damping ensure high quality reproduction of even the finest micro details in music. The extremely stiff and stable injection moulded metal basket keeps the critical components in perfect alignment. Large windows in the basket both above and below the spider reduce sound reflection, air flow noise and cavity resonance to a minimum..