New 4.25 inch Uni-Q Driver Array The secret of the E305 system's outstanding hi-fi response lies in the latest iteration of KEF's signature Uni-Q driver array, originally developed for the multiple award-winning Q Series. With its famously wide dispersion characteristics and sonic purity, this technology is what gives the system its extraordinarily natural sound quality. Uni-Q Tweeter The tweeter at the centre of the midrange cone is vented to prevent distortion-inducing high pressure from building up behind the dome, so the response in the critical vocal region remains intricately detailed with every nuance of the original recording. With KEF's 'tangerine' waveguide, it encourages the sound to radiate evenly, increasing both the dispersion and sensitivity of the tweeter for a more natural performance throughout the listening area. Uni-Q MF/ LF Driver Being stiffer than conventional materials, the aluminium midrange cone operates rigidly over the entire vocal range for the smooth, clear midrange response that reproduces the human voice with stunning accuracy. Together with KEF's Z-flex cone surround it allows the cone full excursion while providing a smooth, uninterrupted surface over which the tweeter output passes with no disturbance or diffraction effects. Its undercut magnet designed driver motor, which usually is only found in high end speakers, reduces midrange distortion by generating a very symmetrical magnetic field, resulting transparency helps to create the feeling of 'being there'. The frequency and phase response of the sub and satellites are carefully matched to smoothen the transition, so you can't hear where the satellite stops and the sub starts. With a large, powerful motor system driving a long throw 8-inch cone, low frequency reproduction remains composed and unerringly accurate, even at high volume. Based on a Linkwitz Transform circuit to minimise any signal group-delay that would otherwise muddy the bass, the on-board pre-amp assures noticeably cleaner and more accurate low frequency reproduction. A closed-box design, the E-2 subwoofer delivers agile extended bass response without overhang - fast, punchy and well defined. Like the satellites, the cabinet borrows damping technologies from the LS50 to avoid resonance and secondary radiation to ensure tight, clean and immaculately controlled bass