Specifications

2-1
OPERATION
POWERING UP
With all your connections made, you are ready to listen to your
Boulder 850 Power Amplifier.
To turn the amplifier on, press the STANDBY button on the front
panel. The amplifier will perform a warm up cycle and the indicator will
alternate between red and amber for 45 seconds. This power up sequence
can be skipped by pressing and holding the STANDBY button until the
indicator turns red; then release and it will start in about 5 seconds.
Because of the large inrush currents associated with the powerful
toroidal transformer, two power relays are used to turn on the amplifier.
These are under the control of the supervising microprocessor. During
the power up time, you will hear 2 sequential relay clicks.
The indicator will then turn amber and stay so during normal
operation.
To turn the amplifier off, press the STANDBY button again. The
indicator will continuously change from red to green.
OPERATION