Altec Lansing 1203A SPEAKER SYSTEMS are powerful and versatile sound systems designed for a wide range of professional audio applications. With 85 watts of power handling capability, they deliver clear and dynamic sound reproduction. The built-in amplifier and advanced circuitry ensure optimal performance and protection for the output transistors. The systems feature a 15" low frequency speaker and an 800 Hz cast aluminum sectoral horn with a revolutionary diaphragm construction for exceptional mid-range and high frequencies.