Amplifier Current Estimator
Estimate DC input current from total RMS output, operating voltage, and assumed efficiency.
Estimated DC current at rated output90.6 AP ÷ efficiency ÷ voltage
- Estimated DC input power
- 1250 W
- Estimated conversion loss
- 250 W
- Assumed efficiency
- 80%
Example logic: 1,000 W ÷ 0.80 ÷ 13.8 V ≈ 90.6 A. Actual music draw is normally lower than a continuous full-power test, but transient and test-tone conditions differ.