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Speaker Impedance (Series vs Parallel) & Amplifier Load Calculator

Calculate net nominal speaker load resistance (Ohms) across series, parallel, and series-parallel wiring topologies to avoid blowing amplifier output stages.

Inputs used by this tool

Enter values in the interactive controls when the page loads. The result depends on the assumptions and units shown for each field.

Input type: select
Input type: number
Input type: select

Data handling varies by tool. Review its notes and the Privacy Policy before entering sensitive information.