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Crossover Calculator - Zobel Circuit
Impedance Stabilization
Even though speakers are rated at a certain resistance the actual impedance varies with frequency. To compensate for the non-linearity of speakers Zobel circuits are used. Re is the DC resistance of the woofer (can be measured with an ohmmeter.) Le (or Lces) is the electrical inductive equivalent of the driver.
DC Resistance: Ω
Inductive Equivalent: Henries
C1 = µF
R1 = Ω

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