Impedance Equalization Designer Help Impedance Equalization Circuits, also know as Zobel circuits, are used to counteract the rising impedance of a voice coil caused by inductive reactance. This problem mainly occurs in sub woofers, because of their large coils. A Impedance Equalization circuit is usually placed after the crossover. The impedance of the tweeter rises because of the voice coils inductance at high frequencies. Using the capacitor and resistor will help to flatten out the impedance curve.
Experimentation is recommended to achieve the desired result.
1998 Michael LaLena .