The IL 12.2 is a 2-way full-range loudspeaker box with an internal passive crossover. It is fitted with a direct-loaded 12"-cone loudspeaker in a bass reflex housing and a 2"-high frequency driver with CD-horn. This equipment makes a frequency response in the bass range possible which is sufficient for speech transmission and the reproduction of background music even without a subwoofer. The subwoofer IL 115 Sub is available for applications which need an extended frequency response in the bass range. Apart from natural speech reproduction, the IL 12.2 stands out due to its unusual phase linearity an a broad dynamic range. It is ideally suited for acoustic applications for which distances of up to approx. 25 m have to be bridged, depending on the sound pressure requirements. A controller is not required for operating the IL 12.2. It is possible, however, to use the HK Audio Digital Field Controller (DFC).