Speaker Impedance

Welcome to Speaker Impedance. This website calculates the nominal impedance created with different combinations of wiring speakers together. Remember calculations are only to be used as a guide; in reality, the impedance will vary with frequency and more factors such as coil temperature come into play.

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Equation Wordy Equation Info
V = I x R Voltage = Current x Resistance Ohm's Law.
R = R1 + R2 +.. Resistance = Resist1 + Resist2 +.. Resistances connected in series add up
1/R = 1/R1 + 1/R2 +.. 1/Resistance = 1/Resist1 + 1/Resist2 +.. The reciprocal of Resistances connected in Parallel add up
PA = PTotal x R / RTotal Powerof speaker A = PowerTotal x Resistanceof speaker A / ResistanceTotal Calculates the power going to one speaker connected in series