Form construction: Rectangular box. Equipment: 18 “transistor for low frequencies Power (rms watts): 500 watts Impedance input: 8 ohms Frequency range: 38 Hz – 250 Hz Sound pressure (1W / 1m): 97 dB Sensitivity (max ./1 m): 133 dB Dispersion: Omnidirectional Internal crossover: Yes Connections: Neutrik Speakon Housing material: Multiplex wood, black lacquered Dimensions (AxAlxPr): 508 x 763 x 595 mm Weight: 38.7 kg.