The SL-15 is a high-power long-range horn speaker with a coaxial design for high and low frequencies. It adopts professional-grade coaxial drivers, featuring efficient sound transmission, strong penetration and high voice reproduction fidelity. The cabinet is made of PP material, which is waterproof, corrosion-resistant and hydrochloric acid-resistant. Suitable for various extreme climates and environments, it is widely used in stadiums, schools, training grounds, air-raid sirens, coastal beaches, highways and other places.