Type : 2-way bass-reflex bookshelf loudspeaker Speaker drivers : 61/2″ (16.5cm) Slatefiber Midbass1″ (25mm) Al/Mg inverted dome TAM tweeter Sensitivity (2.83V/1m) : 89.5dB Frequency response (+/-3dB) : 56Hz – 30kHz Low frequency point (-6dB) : 48Hz Nominal impedance : 8 Ω Minimum impedance :4.5 Ω Recommanded amplifier power : 25 – 120W Crossover frequency : 2,800Hz Dimensions (WxDxH) : 85/8×101/4×151/4″ (21.9x26x38.7cm) Net weight (with grille) : 15.4lbs (7kg) Packaging dimensions (WxDxH) : 227/8x15x187/8″ (58x38x48cm) Net weight (with packaging) : 38.6lbs (17.5kg) (2 pieces)