10
OPERATING THE QUAD 99 POWER AMPLIFIER
Front Panel Indications
When used as part of a 99 system
When the Quad 99 preamplifier or AV processor is in STANDBY mode, the
front panel indicator will light a steady red. When you activate the system
the indicator will glow green and stay green during normal operation.
If the amplifier detects a fault such as a short circuit on the speaker cables,
or if the amplifier overheats, the power amplifier will power down and the
indicator will flash red. After thirty seconds the amplifier will ‘try again’. If
all is well, the amplifier will go into standby and the indicator light will
glow a steady red. You may now bring the amplifier out of STANDBY.
If there is a persistent fault, when the amplifier ‘tries again’ the light will
still flash red. If this should happen, switch off the unit at the mains and
wait 30 minutes. Carefully check all the connections before switching on
again. The amplifier should now go into STANDBY and the light will glow
a steady red. If the red light still flashes, there is an internal fault and you
should return the unit to your dealer for his attention.
When used with other units
When the amplifier is switched on, the front panel indicator will briefly
light red and then glow steady green. It will stay green during normal
operation.
If there is a fault, the amplifier will power down and flash red. After 30
seconds the amplifier will ‘try again’. If all is well the light will glow green
indicating normal operation. If the light still flashes red, switch off the unit
at the mains and wait 30 minutes. Carefully check all the connections before
switching on. The light should now indicate green indicating normal
operation. If, however, the red light still flashes, there is an internal fault and
you should return the unit to your dealer for his attention.
Running In your amplifier
The performance of the amplifiers tends to stabilise after a period of use.
This is due to a number of factors associated with the physical and chemical
properties of the components used. We recommend that the system be run
with a music signal for several hours when it is first installed. Although the
changes can be quite subtle in nature, we find that after a few days the
