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.

Go to on your mobile device to use the Webapp

System Impedance Calculator

Amp Power:
3 Speakers in Series and Parellel configuration

Speaker A:

Speaker B:

Speaker C:

Total Impedance = 4 Ω
Speaker A Power = 75 Watts
Speaker B Power = 75 Watts
Speaker C Power = 150 Watts

Please remember, this website gives theoretical values. We can't be held responsible if you speakers/amps blow up. This website is to be used for guidance only. :)