KEF introduce the LS50, an innovative concept derived from the legendary LS3/5a, the LS50 mini monitor speaker is designed to bring a professional studio monitor concept into the home.Rarely the case in such a compact design, the LS50 monitor delivers a rich, multi-dimensional ‘soundstage experience’ that is out of all proportion to its size. Patent-pending acoustic designs, together with state-of-the-art technologies from KEF's latest flagship Blade loudspeaker, provide the ultimate studio experience – even in the smallest of spaces. Model LS50 Design Two-way bass reflex Drive units Uni-Q driver array:HF: 25mm (1in.) vented aluminium domeMF: 130mm (5.25in.) magnesium/aluminium alloy Frequency range (-6dB) 47Hz - 45kHz Frequency response (±3dB) 79Hz - 28kHz Crossover frequency 2.2kHz Amplifier requirements 25 - 100 W Sensitivity (2.83V/1m) 85dB Harmonic distortion2nd & 3rd harmonics (90dB, 1m) less than 0.4% 175Hz-20kHz Maximum output 106dB Nominal impedance 8O (min. 3.2O) Weight 7.2kg (15.8lbs.) Dimension (H x W x D) (with terminal) 302 x 200 x 278 mm(11.9 x 7.9 x 10.9 in.)