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FEATURES & SETUP- LED INDICATORS
CLIP : red LED that illuminates when the amplifier
clips.
Normal indication:
illumination briefly at extreme
output power peaks. Occasional clipping (once briefly
every few seconds) when operation at high power
levels is normal. At power-on, the clip LEDs may briefly
flash; this is normal.
Continuous operation at high power may trigger the
thermal protection circuitry, shutting down the amplifier
and fully illuminating the clip LED. Operation will
resume after the amplifier has cooled down sufficiently.
SIGNAL: green LED that lights up when the input
signal is strong enough to drive the output to about -40
dB from rated 8-ohm power.
Normal indication:
varying brightness corresponding
to strength of input signal.
POWER: green LED that illuminates when the power
switch is set to the on position and AC power is present
at the IEC cord receptacle.
Normal indication:
at power-on the LED will illumi-
nate at half-brightness for 2-3 seconds, then it illumi-
nates to full-brightness.
If no indication:
check gain settings, input cables,
connections and audio source. If audio source is
extremely low signal strength, signal LED may not
illuminate; this is normal but indicates that the input
signal strength should be increased.
Occasional illumination:
normal for weak input
signal strength.
Illuminated dimly all the time with brighter
flashing:
normal for “average” input signal strength.
Fully illuminated (on):
normal for “pushing” the
amplifier hard. Also, the clip indicator will probably
flash dimly with the beat of the program material and
brightly during extreme peaks in the material.
If no indication:
see previous page for suggested
items to check.
When power is switched off:
the LED may take
several seconds to extinguish (go out); this is normal.
If no indication:
normal if the amplifier is operated at
very low output levels.
Occasional illumination:
Occasional clipping (once
briefly every few seconds) when operation at high
power levels is normal. Continuous operation at high
power may trigger the thermal protection circuitry,
shutting down the amplifier and fully illuminating the
clip LED.
Illuminated most of the time:
Not normal; reduce the
output of the amplifier and/or input signal to avoid
thermal shutdown of the amplifier and possible speaker
damage.
Fully illuminated (on):
Amplifier is in thermal shut
down. Reduce gain settings or input signal and allow
the amp to cool down. Leave the power on so that the
fan continues to run; operation will automatically
resume after the amplifier has cooled sufficiently.
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