Specs System Type : Three-way, floor standing Enclosure type : Coupled cavity Size : 900 x 280 x 415mm (35.5 x 11 x 16.5 inches) Weight : 32kg (70.5 lb) Nominal Impedance : 4 ohms resistive (20Hz-20kHz) Rated maximum power : 200W programme Amplifier Requirements : 25-200 watts per channel into 4 ohms Frequency response (standard) : 55-20,000Hz +/-2dB at 2m on design axis Frequency response (with matching KUBE) : 35-20,000Hz +/-2dB at 2m on design axis (-6dB at 20Hz, Q=0.5) Sensitivity : 92dB at 2m on reference axis for a pink noise input of 2.83V (anechoic conditions) Maximum output : 112dB on programme peaks under typical listening conditions Finishes : Selected real wood veneers Grille : fabric System : SP3037 Drive units : 2 x B200 bass unit (SP1188), 2 x B110 midrange unit (SP1190), T33 tweeter (SP1191) Crossover : SP2050 (1984 only: SP2042, 2043, 2046). System : SP3128 (Bi-Wire version, 1990 onwards) Drive units : 2 x B200 bass unit (SP1256), 2 x B110 midrange unit (SP1274), T33 tweeter (SP1191) Crossover : SP2173