The all-weather high-power column speaker is built-in rated 20W output power amplifier and 6? plus 3? two way waterproof drivers, the two parts are well sealed and isolated from each to avoid magnetic interference and noise, also the first-class components help to disperse full frequency response for background music and paging system. It can remit sounds for a long distance because its high-power broad band-wave speakers. The waterproof IP56 rate and rust prevention processed metal enclosure can endure years of high performance, and the ABS top and bottom cover, the aluminum grille and one metal pair of mounting brackets all are provided for easy mounting. There are dual RCA line inputs with volume control, the AC 230V or 110V power supply input is provided with power switch and AC fuse. Ideal for outdoor applications in train stations, school, stadiums, shopping mall, park, garden, hospital and hotel.