AV Tools / Audio

Speaker Impedance Calculator

Calculate total impedance for series, parallel, or series-parallel speaker configurations.

Projects
Pro

Amplifier

100 W amp

Wiring

Series

Speaker Types

1 type · 4 speakers
Subtotal4 × 8Ω

Results

Safe
Wiring StatusSeries load at 32.0Ω
Total impedance32.0Ωabove amp minimum
Amp minimum4Ωminimum safe load
Speaker count41 type
Per speaker power25.0Wequal distribution

Wiring Diagram

Series configuration
AMP 4 Ohm min + - + - S1 25.0W + - S2 25.0W + - S3 25.0W + - S4 25.0W

Speaker Power Headroom

Enter speaker power ratings to see worst-case headroom per speaker type.

Power Distribution

Power is distributed equally across all speakers.

SpeakerImpedanceVoltagePower% of Total
S18Ω14.1V25.0W
25.0%
S28Ω14.1V25.0W
25.0%
S38Ω14.1V25.0W
25.0%
S48Ω14.1V25.0W
25.0%
Total32.0Ω56.6V100.0W100%

Disclaimer

These tools are provided in beta and are subject to change. All calculations and results may contain errors and should be independently verified by a qualified professional before use in any design, installation, or safety-critical application. AV500 accepts no liability for decisions made based on these outputs.