2 way, 5.25" (133mm) Polycellulose Low-Frequency Woofer; New High Definition Imaging (HDI) Waveguide; 1” (25mm) Aluminum Dome Tweeter; Recommended Amplifier Power20 – 125W; Frequency Response55Hz – 40kHz; Sensitivity86dB @ 1M, 2.83V; Nominal Impedance6 Ohms; Dimensions (W x D x H)190 x 230 x 321mm; Weight (each) 5.45kg