FREQUENCY RESPONSE: 40Hz-120Hz ?3dB DRIVERS: 18" (460mm) bass driver RATED POWER: 500W AES, 2000W peak SENSITIVITY : 99dB MAXIMUM SPL : 124dB continuous, 130dB peak IMPEDANCE : 8 ohms nominal DISPERSION : - DIMENSIONS : (W) 561mm x (H) 690mm x (D) 595mm (W) 22.1ins x (H) 27.2ins x (D) 23.4ins WEIGHT :45kg (99lbs)