Rated Input : 10 W (Mobile Mount use: 5 W) Rated Impedance : 8 Sound Pressure Level : 110 dB (1 W, 1 m at 500 Hz to 2.5 kHz peak level) Frequency Response : 315 Hz - 12.5 kHz Sensitivity when used as Microphone 2 (0 dB=1 mW/10 dynes/cm ) : -24 dB at 1 kHz Dust/Water Protection : IP65 Polarity Hot: Black, Com: White Operating Temperature -20 '" to +55 '" (must be free from dew condensation) Finish Horn flare: Aluminum, off-white, powder coating Reflector horn and rear cover: ABS resin, off-white Bracket, screws and bolts: Stainless steel Speaker cable: Polyvinyl chloride insulated cabtyre cable (6 mm in diameter, 600 mm in length) Dimensions : 172 (W) 161 (H) 188 (D) mm Option :Swivel bracket: YS-151S (Can be used instead of the supplied bracket.)