Frequency response: 75 Hz – 20,000 Hz Impedance: 4 Ω Maximum input power: 60 W Nominal input power: 20 W Sensitivity: 89 dB Series: Surface Mount Diameter Size: 13 cm Dimensions: 300 mm (W) x 111 mm (H) x 166 mm (D) Magnets: Ferrite Woofer material: IMPP™