The QSC AcousticPerformance™ AP-4122m is a professional, two-way, full-range loudspeaker ideal for a variety of portable and installed sound reinforcement applications requiring high power, wide coverage and compact size. It uses a 305 mm (12") woofer with 64 mm (2.5") voice-coil and a coaxially mounted high power-capacity, 44 mm (1.75") voice coil compression driver to deliver exceptional full bandwidth reproduction.