70V / 100V Speaker Line Loss

Check end-of-line voltage, power loss and cable resistance.

Your estimate

Enter your project values and select Calculate.

Method & assumptions

Z = V² / tap watts; loop R = 2 × length × conductor resistance / 1,000; load V = V × Z / (Z + loop R).

All speaker load is modeled at the far end, with nominal resistive transformer impedance. Default resistance is approximately 16 AWG copper at 20°C; replace with your cable data and operating temperature. Not a transformer, amplifier or fire-circuit certification.

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70V / 100V Speaker Line Loss

Project inputs

Your estimate

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