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