Model 20B Specifications Cabinet Design closed box Crossover frequency 80Hz - 150Hz Frequency Range +/ 3dB 45Hz - 150Hz Sensitivity - 2.83v @ 1m active system Maximum output - typical in room 107dB Amplifier requirements 70W built in Impedance active system Weight 9.3kg (20.5lbs) Dimensions (H x W x D) 326 x 302 x 299mm 13 x 12 x 11.9in. Finishes video grey