Front Panel; Rear Panel - Crest Audio LT Series Owner's Manual

front panel

1
Rack Mounting Ears
Two front-panel mounting holes are provided on each mounting ear.
2 Channel Level attenuators
Two input attenuators adjust level for their respective amplifier
channels. In Bridged Mono and Parallel modes, the channel A
attenuator controls overall signal level (see rear panel mode switch
description).
3
Protect
This Red LED indicates that the amp channel is in Protect mode.
During Power up, the amp briefly goes into protect mode in order
to prevent any loud spikes from being fed the speakers. After a few
seconds the amp comes out of protect mode and is ready for
normal operation. If the amp stays in Protect mode, this indicates
that there may be a problem internal to the amp. If the amp goes
into Protect mode during operation this indicates that either a
problem has developed internal to the amp or the amp is being
over-stressed and needs to cool down. After a Protect condition, the
amp must be reset by cycling the power off and then on again in order
to continue using it.
4 ACL / IGM
This Red LED illuminates when either the ACL or IGM protection
circuitry is engaged. See Section 6,Tourclass Protection for more
information on these Crest-exclusive features.
5 -24, -18, -6, 0dB
The first three LEDs (-24, -18, -6,) are Green and the last led, 0dB is
yellow. These LEDs respond to the incoming program material as peak
meters. Under normal operating conditions the Green LEDs illuminate
with the dynamics of the program material and the Yellow LED flashes
during the loudest peaks.
6 Signal
Green LED varies in intensity in response to signals below -24 dB.
7 Active
Green LED illuminates when the amp is on to show that the channel
is active.
8 Fan Outlet Grill
LT & ST Series amplifiers are cooled by a single rear-mounted fan.
Cool air flows over the heat sink and exhausts through the front grill.
Make sure this outlet remains clear to allow unrestricted airflow.
9
Power switch
This switch turns the amp on and off. If the amp doesn't turn on when
the switch is in the ON position, check the circuit breaker on the rear
panel.
features overview
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