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General| Type | Stereo Integrated Amplifier |
|---|---|
| Total Harmonic Distortion | 0.05% |
| Input Impedance | 47 kΩ |
| Input Sensitivity (MM) | 2.5 mV |
| Input Sensitivity (line) | 150 mV |
| Damping Factor | 50 |
| Speaker Load Impedance | 4Ω to 16Ω |
Procedure for safely removing the power transistors from the unit.
Steps for removing printed wiring boards and power transistors.
Procedure for setting the idle current for both HA-4700 and HA-3700 models.
Procedure for adjusting the DC output for the HA-4700 model.
Procedure to verify the ASO detection circuit's functionality for output transistors.
Method to check the correct operation of the speaker protection relay.
Troubleshooting steps for phenomena when the protection circuit activates.
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