The Classic is the result of more than a decade of research and development, offering several important advantages over conventional designs. A uniform dispersion pattern provides a broad sweet spot for the listener duo e to the diminishing line source design philosophy, which demands low crossover frequencies and high temperature voice coils. Due to the inherent ruggedness of the drivers used, no degrading overload protection devices are needed, and distortion levels are kept below the threshold of audibility across the spectrum via the use of six custom designed drive elements.