Constellation Audio Hercules II - Manual (Page 11)

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STEP 8: To mute the amplifier, press and release the left side of the bar on the front panel. The LED status
indicator will start flashing blue and the sound will stop. To unmute the amp, press and release the left side
of the bar again.
STEP 9: To turn the amplifier off, press and hold the left side of the bar on the front panel for 3 seconds. The
LED status indicator will start to blink red, indicating that the amp is in cool-down mode. It will remain in this
mode for 1 minute, and during this time, you will not be able to use the front power button. After 1 minute,
the LED will glow solid red and you can power up the amp again.
Normal operation
Once the amplifier is installed and properly set up, it normally requires no user operation except for turning
the amplifier on and off.
Other than the power button on the front panel, the only control that you might want to use on a regular basis
is the mute function, which can be activated from the front power button or the rear mute switch. However,
this function is provided mainly as a convenience—you would normally use the mute function on your preamp
or the pause button on your source device to mute the sound from your audio system.
Maintenance
The Hercules II amplifiers require no regular maintenance.
If the amplifier’s surface becomes dusty, simply wipe it off with a soft dry cloth. Do not spray cleaners on the
surface.
To clean fingerprints from the surface of the amplifier, spray a small amount of mild window cleaner such as
Windex onto a soft dry cloth, then use the cloth to remove the fingerprints. Do not spray the cleaner directly
onto the amplifier.
If dust collects inside any of the amplifier’s vents, vacuum it out with a hand vac or shop vac. Use a brush
attachment if available in order to avoid scratching the surface of the vents. If you do not have a brush
attachment, do not touch the surface of the vent with the nozzle of the vacuum, in order to avoid scratching
the surface.
Troubleshooting
Amplifier will not turn on
1. Check to see if the front status indicator LED is illuminated red. If it is not, try the following steps in order.
If any one of the steps restores the power, there is no need to continue to the next steps.
A. Make sure the master power switch on the rear of the amplifier is turned on.
B. Check to make sure the AC cord is connected to the amplifier and to a wall outlet.
C. Flip the master power switch off and on again. This will reset the amplifier’s internal circuit breaker.
D. Check the circuit breaker in the electrical box to make sure it has not been tripped. If it has, check to
make sure a short circuit does not exist at the amplifier’s speaker terminals or the speaker’s input
terminals. If no short circuit exists, flip the breaker on and off to reset it.