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(1) INPUT GAIN (dB)
These controls are used to adjust the input gain of each channel. They determine how loud each
channel of the power amplifier will sound for a given input signal level. Maximum input gain is
achieved at the fully clockwise setting, and this setting yields maximum mixer/system
headroom. A setting of less than fully clockwise will yield lower system noise at the expense of
mixer/system headroom. Turning the control fully counterclockwise is the off setting . It is
always a good idea to power up any new installing at this setting to protect the system
loudspeakers.
(2) POWER LED (POWER)
These indicators illuminate when the AC mains power is being supplied to the amp and both
channels are operational. If either channel experiences fault conditions, exceeds safe operating
temperature limits, or if the mains circuit breaker trips; both channel power LED will be dark,
indicating shutdown. If the BRIDGE mode is selected, the indicator on channel B will remain
dark as a positive indication of this mode selection.
(3) SIGNAL ACTIVITY LEDS (SIGNAL)
These indicators illuminate when the associated channel output signal level exceeds 1 V RMS.
(4) OVERLOAD LEDS (CLIP)
These indicators illuminate when the associated channel has been overloaded.
(5) FAULT LEDS (FAULT)
These indicators illuminate when the amplifier just turned on or if the amplifier is detected
some problem inside such as overheat or circuit problem so that can protect the amplifier.
(6) POWER SWITCH
This heavy-duty, rocker-type switch turns on the mains power to the amplifier. When the mains
power is applied, there is a three-second delay in activation of the unit. This reduces/eliminates
the turn-on transients associated with the system equipment connected to the amplifier and
protects loudspeakers.
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