The SL-12 is a high-power long-range horn loudspeaker featuring a coaxial design for high and low frequencies. It adopts professional-grade coaxial drivers, delivering efficient sound transmission, strong penetration, and high voice clarity. The enclosure is constructed from PP material, providing waterproof, corrosion-resistant, and hydrochloric acid-resistant properties. It is suitable for various extreme climates and environments, and widely used in stadiums, schools, training grounds, air-raid sirens, coastal beaches, highways, and other applications.