ToolsElectronics, cables & data
Speaker impedance: series & parallel
Total load of several speakers wired in series or in parallel.
- Ω
- Ω
- In series
- 16Ω
- In parallel
- 4Ω
How it works
Two 8 Ω speakers in parallel present 4 Ω to the amplifier; in series they present 16 Ω. Always check that the total load is within what your amplifier is rated for. Nominal impedance varies with frequency, so these are approximations.
Formulas
- Z_series = Z₁ + Z₂ + …
- 1 / Z_parallel = 1/Z₁ + 1/Z₂ + …
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