24 dB Active Crossover with Front, Rear and Sub inputs for 6 ch. or use just Front and Rear for 4 ch. or just use Front for 2 ch. input. Auto mode circuitry will feed the Sub from the front ch. inputs. Crossover frequencies can be changed from 15 Hz to 3500 Hz. Purchase already made up, array of resistors, and just plug them in. Gain controls for each frequency setting. Easy to set up. Clean with no noise. Use passive capacitors to protect your tweeters from low frequencies due to amp turn on etc.
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