11
5 Start-up
Fig. 7:
Front view
10
LED (red) indicates protection mode during warm-up or error on the left output stage channel
11
LED (red) indicates protection mode during warm-up or error on the right output stage channel
12
LED (blue) indicates ready for operation
13
Mains power switch
to switch on the AMP III
–
MK 2
5. 1 Description of function
The two red LEDs (10 and 11) signal that the output relay of the output stage channel is open and that means that
the transmission of a music signal to the connected loudspeaker is interrupted.
The blue LED 12 in the middle signals that the unit is switched on (operational status).
To connect the unit to the mains socket, please press the mains power switch 13 on the front of the unit. To start
your listing music please check, if the
MUTE
switch 9
on the rear isn’t activated.
After switching on the mains switch 13 all three LEDs will turn on. After approx. 5 seconds the two red ones will
extinguish, while the blue LED stays on showing that the unit is running.
5. 2 Operating instructions
▪
Switching on: Always
switch-on the
power amplifier last, i.e. after the other devices in your system
(preamplifier, CD player, etc).
▪
Switching off: Always switch-off the power amplifier first and then switch-off the other devices from the
mains power.
▪
When you switch off the unit from the front panel the auxiliary transformer remains connected to the mains
power. The power consumption is minimal. However, for longer periods of absence always disconnect the
power amplifier from the mains power by pulling the mains plug from the socket.
▪
During a thunderstorm please
completely
disconnect the unit from the mains power by pulling out all three
plugs.
▪
Avoid unnecessarily frequent switching the power amplifier on and off. The high amount of switch-on current is
a heavy burden for the electrical components and so the life of the unit will be shortened by this action.
