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Also helpful is bass equalization and subsonic filtering. When cascading
active filters with the existing passive filters within the speaker system, be
sure to allow for adequate frequency overlap. For instance, if the passive
crossover is set at 500 Hz, select a low pass corner frequency of 600 Hz
and a high pass corner frequency of 450 Hz to prevent a suck out in the
response at 500 Hz. The controlled distribution of power afforded by the
active crossover results in less amplifier strain (better clarity), greater
dynamics, and lower intermodulation distortion. However, a basic
understanding of crossover slopes and crossover frequencies within your
loudspeaker will be needed to implement the active crossover successfully.
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