Speaker Load Wiring Calculator

Enter up to 4 speaker impedances and how they're wired, and this works out the combined load your amp channel actually sees — then flags it if that's outside a safe range. Daisy-chaining speakers without checking the resulting impedance is a common way to overheat or damage an amplifier.

Wiring All parallel All series Speaker 1 Impedance (Ω) Speaker 2 Impedance (Ω) — optional Speaker 3 Impedance (Ω) — optional Speaker 4 Impedance (Ω) — optional Amp's Safe Load Range — Min (Ω) Amp's Safe Load Range — Max (Ω) Calculate

4–16Ω is a common safe range for many amp channels, but it's not universal — check your specific amplifier's spec sheet and enter its actual min/max here. Mixed series-parallel wiring (some speakers in series, that group then paralleled with others) isn't covered by this calculator — for anything more complex than a single series or parallel group, work it out per-branch or consult your amp/speaker documentation.

Source: Newman, Brian. Live Sound Basics, "Amps & Speakers." Rewritten in Ryan's own words from the source material.