The ZH-5050-AS is a horn speaker highly intelligible with built-in low frequency cut filler, general-purpose speaker suited to public address announcement applications. It's external speaker component finished with coating, and stainless steel screws ensure the unit is rust resistance and weatherproof capability. Specifications : Rated Input : 50 W Rated Impedance : 16Ω, Low Impedance Sound Pressure Level (100W/1m) : 110 dB (1W, 1m) Dust/Water Protection : IP65 Frequency Response 160 Hz - 6kHz Dimension (∅ x D) : Ø500 (W) x 420 (D)mm Weight 4.4kg