100V Line Calculator

Date Posted 11/12/2025

Toolbox Audio 100V Line Load Calculator
100V Line Load Calculator

Enter amplifier power and speaker tapping values to check your total 100V line load against a recommended safety margin (typically 15% below the amplifier’s rated output).

Amplifier output: W
Recommended max speaker load: W
Total connected speaker load: W
Load vs recommended:

Rule of thumb: keep total speaker tappings to around 15% below the amplifier’s rated power (e.g. up to 100W of speakers on a 120W 100V line amplifier).

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