Minimum Amplifier Power Calculator
Estimate amplifier watts needed for a target loudness from speaker sensitivity.
Compare Your Options And Get Clear Answers
Estimate amplifier watts needed for a target loudness from speaker sensitivity.
Minimum Amplifier Power Estimator
Enter your numbers below for an instant estimate.
How It Works
Key concepts behind this calculator
Enter Values
Fill in each field with your own numbers.
Calculate
Results update as you change the inputs.
Review
Read the breakdown and the explanation.
Adjust
Change values to compare scenarios.
Minimum Quick Guide
Typical values for reference.
| Speaker sensitivity (dB at 1W 1m) | Target level (dB SPL) | Listening distance (m) | Minimum power |
|---|---|---|---|
| 90 | 105 | 3 | 285 W |
| 86 | 105 | 3 | 715 W |
| 95 | 100 | 3 | 28.5 W |
| 90 | 105 | 5 | 791 W |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Minimum Amplifier Power Calculator FAQ
Answers to common questions about this calculator.
It uses the formula shown with your inputs. Real conditions vary, so treat it as a guide.
Add headroom for peaks.
It is an estimate based on the inputs you enter. Check real quotes, labels or official guidance for important decisions.
Yes. Replace each input with your own figures and the result updates instantly.