The CA 1215-6 is a compact full-range, highpower loudspeaker system with 12“ and 1.5“ transducers. With a coverage of 65 x 50 degrees, the CA 1215-6 is the ultimate tool for medium and long throw applications. If a wider horizontal coverage or a higher SPL is needed it is possible to combine more systems to powerful arrays with very homogenous sound dispersion. Even at distance the CA1215-6 sounds very direct, also at very high sound pressure levels the sound is crystal clear and free of coloration. For music programme the use of a subwoofer is recommendable. The well-considered design of the CA 1215-6 enclosure and the variety of mounting hardware options allow flexible usage in various sound applications. With the 1.5“ driver the CA 1215-6 has the best of both worlds: the fine resolution of a 1“ driver and the pure power of 2“ driver. The CD Horn provides consistent pattern control in both axes already from 1 kHz upwards. The highly efficient 12“ loudspeaker in an optimum ported enclosure produces clear, bone dry lows with high sound pressure levels. The total quality of a passive loudspeaker design, like the CA 1215-6, depends not only on the use of very high quality woofers and drivers, but a major part of the overall quality depends on the design of the cross-over network. Apart from the exactly tuned compensation filters, we use for the first time a passive two step all-pass filter, to optimise the phase response and time alignment between the two transducers. The result is a hardly noticeable transition between the woofer and the horn driver, and a perfect ”off axis” frequency response starting at 500 Hz. For extra safety there is a built-in limiter circuit for the 1.5“ driver.