This module can replace the inductive and capacitive passive frequency divider, and the frequency dividing point can be adjusted with good flexibility.
The test is normal. It is best to use shielded audio cables to prevent noise caused by external interference.
It adopts ±12~18V power supply. It can be powered by the positive and negative power modules of another open source work of mine, and the operation is stable.
Default crossover point: 20HZ~3.5KHZ is bass output, 3.5KHZ~20KHZ is treble output.
Two-channel in and four-channel out, treble, bass, and total volume can be adjusted individually.
Applicable to a variety of operational amplifier ICs: NE5532P, OPA2604AP, OP275G, TL072, etc.
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