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AHB2 Instruction Manual Rev F Page 11

5. Connect the AC Power Cord

The AC input connector accepts standard IEC input cables. Use a grounded cable that is

appropriate for your location. The AC input is auto ranging and may be used internationally without

changing any settings or fuse sizes. Fuses are located in a drawer at the top of the AC input

connector.

6. Turn on the Power

 Turn down the audio source before turning the unit on for the first time.

 Press the power button to turn the unit on or off.

7. Check the Status Indicators

The amplifier has the following status indicators:

 POWER - Power-status indicator, On = Normal, Flashing = Fault

 CLIP (one per channel) - Audio-clip indicator, Flash = Clip, Off = Normal, On = Fault

 TEMP (one per channel) - Over-temperature indicator, Off = Normal, On = Fault

 MUTE (one per channel) - Channel-mute indicator, Off = Normal, On = PROTECT

POWER - Power Status Indicator

 Off = Power is Off

 On = Normal Operation

 Flash = Fault Condition, Power Supply has Shut Down

CLIP - Audio Clipping Indicators

 Off = Normal

 Occasional Flash = Some Clipping is Occurring

 On = Fault Condition, Excessive Clipping has Occurred

TEMP - Over-Temperature Indicators

 Off = Normal

 Left On = Fault - Left Channel Overheated

 Right On = Fault - Right Channel Overheated

 Both On = Other Fault Conditions

MUTE - Audio Mute Indicators

 Off = Normal

 Both On During Start Up or Shut Down = Normal, Audio is Muted

 Both On = PROTECT Mode, a Fault has Occurred, Audio is Muted

Note: Audio will automatically mute on startup and shutdown to protect the speakers and eliminate

unwanted transients.

Benchmark AHB2 User Manual

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