The Ampac Class B 40-Watt (RMS) Audio Power Amplifier complies with the requirements of AS2220.1:1989 in an Ampac EV3000 Emergency Warning and Intercommunication System.
| Voltage | 24 V dc |
| Quiescent Current | 58 mA |
| Max Current | 3400 mA |
| Max Output Power | 40 Watts |
| Output Voltage | 100V ac RMS |
| Frequency Response | 150Hz to 12kHz (±1dB) |
| Distortion | Max 1% at full load (typical 0.5%) |
| Sensitivity | +5dB |
| Overload | 100 VRMS + 10% |
| Weight | 675 grams |
| 154-0075 | 40 Watt Amplifier |
