Type 2-way loudspeaker Enclosure load bass-reflex Suggested amplifier 30 - 120 watt Amplifier load impedance 4 - 8 ohm Frequency range 44 - 22000 hertz Sensitivity (2.83 V / 1 m) 91 dB Drive units 173 mm woofer 26 mm dome tweeter Crossover 1900 hertz Dimensions 200 x 400 x 310 mm Weight 8.7 Kg Technical features bi-wiring bi-amping Finishes black hig-gloss