QSC KLA12 Line Array System, 500 W x 500 W power module, Rugged, ABS enclosure delivers light-weight durability, SOLO, Rigging thomann System supports deployment without tools or external hardware, Ar-Q Frequency Optimization quickly tunes the array with the click of a dial, adjusting for the appropriate number of boxes, 10:1 design factor supports arrays of up to 480 lbs. (218 kg) 5 x KLA12 and 2 x KLA181, 90° thomann x 18° nominal coverage (requires only five boxes to configure a 90° x 90° array), High power, 12" low frequency driver provides extension down to 44Hz without subwoofers, Extensive DSP further enhances and protects performance, 1.75" diaphragm compression driver delivers clear and powerful high-frequency reproduction, Power Twist Input thomann and Thru connections, Tilt-Direct pole mount assists directivity in single-unit applications