Behringer EUROLIVE B315D Active 550-Watt 2-Way PA Speaker System with 15-inch Woofer and 1.75-inch Titanium Compression Driver High-power 400-Watt 2-way PA sound reinforcement speaker system for live and playback applications Ultra-compact lightweight system delivers excellent sound even at extreme sound pressure levels Integrated sound processor for ultimate system control and speaker protection Extremely powerful 15'' long-excursion driver provides incredibly deep bass and acoustic power State-of-the-art 1.75'' titanium-diaphragm compression driver for exceptional high-frequency reproduction