Loudspeakers

Kudos's crossover specification requires a –6dB point at 3.6kHz (12dB/octave slope) and a –3dB low-pass at 750Hz (6dB/octave) to correctly emulate the performance of the passive 707. In practice, the VXN hits the –6dB/3.6kHz point on the nail [red trace, inset Graph] although the 2nd-order roll-off bites below 2kHz. The low pass –3dB point is closer to 620Hz than 750Hz [black trace] – slightly earlier than specified.

The gain of the low-pass section is –0.3dB, and the high-pass –2.75dB, the 2.45dB difference reflected in the relative amplitude of the low (black)/high (red) responses. Distortion is ~0.002% across the linear portion of each passband with an A-wtd S/N of 93-97dB and a moderate 40-160ohm output impedance. PM