Find the total impedance of speakers wired in series or parallel.
Series wiring adds impedances, while parallel wiring combines them in a way that always pulls the total below the smallest speaker. Keeping the total load inside the amplifier's rated range prevents overheating, distortion and potential damage.
Speaker Wiring Impedance
Series = Z1 + Z2; parallel = (Z1 x Z2) / (Z1 + Z2)
Series = Z1 + Z2; parallel = (Z1 x Z2) / (Z1 + Z2) Series wiring adds impedances, while parallel wiring combines them in a way that always pulls the total below the smallest speaker.
Keeping the total load inside the amplifier's rated range prevents overheating, distortion and potential damage.
This calculator takes 3 inputs: Speaker 1 impedance, Speaker 2 impedance, Wiring type. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.