TypeThree-way bass-reflex floorstanding loudspeakerSpeaker driversTwo 61/2" (16.5cm) Flax bass 61/2" (16.5cm) Flax midrange 1" (25mm) Al/Mg TNF inverted dome tweeterFrequency response (+/- 3dB)45Hz - 28kHzLow frequency point - 6 dB37HzSensitivity (2.83V / 1m)91.5dBNominal impedance8 OhmsMinimum impedance2.9 OhmsRecommended amplifier power40 - 250WCrossover frequency290Hz / 2400HzDimensions (H x W x D)403/4x119/16x145/8’’ (1035x294x371mm)Weight55lbs (25kg)