Specifications Bass:- 30cm (12") woven carbon fiber, 30cm (12") Passive Radiator Mid:- two rectangular 10 x 20 cm (4 x 8") Neo ribbons, 280 Hz - 6.9 kHzTreble:- FST, 6.9kHz - 30kHzImpedance & Sensitivity:- 4 Ohm (3.6 min.) 91 dB/1W/1mPower handling:- 300 W rms / 4 Ohms, 20 W min.Frequency response:- 22 Hz - 25 kHz +0/-3dBDimensions & Weight:- 114H x 38W x 41Dcm, 55kg (45"H x 15"W x 16"D, 120 lbs)Output levels and distortion:- max. 1% THD fullrange/1 W, max. 112+ dB SPL / 1 mFinishes:- standard lite oak, dark oak