2.5 way, 2 x 6.5" (165mm) Polycellulose Low-Frequency Woofer; New High Definition Imaging (HDI) Waveguide; 1” (25mm) Aluminum Dome Tweeter; Recommended Amplifier Power20 – 225W; Frequency Response40Hz – 40kHz; Sensitivity90dB @ 1M, 2.83V; Nominal Impedance6 Ohms; Dimensions (W x D x H)230 x 295 x 1000mm; Weight38.03 lbs (17.25kg)