BEHRINGER EUROLIVE PROFESSIONAL B1220 PRO High-performance 1,200-Watt loudspeaker system for use as PA speaker or floor monitor Extremely powerful 12'' long-excursion driver provides incredibly deep bass and acoustic power Proprietary 1.75'' titanium-diaphragm compression driver for exceptional high-frequency reproduction Ultra-wide 50 Hz  18 kHz frequency range (-10 dB), impedance 8 Ohms Extremely high sound pressure level (95 dB full space 1 W @ 1 m)