6 x 3" (76mm) Polycellulose Low-Frequency Woofer; New High Definition Imaging (HDI) Waveguide; 1” (25mm) Aluminum Dome Tweeter; Recommended Amplifier Power20 – 150W; Frequency Response75Hz – 40kHz; Sensitivity90dB @ 1M, 2.83V; Impedance 6 Ohms; Crossover Frequencies2.5kHz; Dimensions (W x D x H)745 x 166 x 104mm; Weight 7.45kg