Specification Bass : 6.5" (170 mm) x 1 woven carbon fibre cone with aluminium/steel Midrange : 3" (75 mm) x 2 soft dome textile Tweeter : 1" (25 mm) x 2 soft dome textile with Neodynium magnet Power : 100 W Nominal Impedance : 6 ohm Sensitivity : 89 dB Frequency Response (+/-3db) : 60 Hz - 43 kHz Crossover : 650 Hz , 3 kHz System Fb : 30Hz Dimensions (H x W x D) : 280 x 460 x 180 mm Net weight : 10.6 kg Finish : rosewood grand piano