One of three models in a family of cinema crossover accessories designed for QSC’s DCA Digital Cinema Amplifiers. These products were designed to interface with the Display Port on the rear of the amplifier, replacing the native inputs and drawing its power from the same port. The XC-3 shown here utilizes a two way, 4th order Linkwitz-Riley alignment, frequency shaping, level shifting and delay. A selectable high-frequency boost circuit provides several increments of compensation for screen loss or constant-directivity horn equalization.