Front Panel Description - Phonic XP6000 User Manual

FRONT PANEL DESCRIPTION

1. CLIP/LIM LED (RED)
When the audio signal drives the amplifier output circuit beyond
its power capability, it will clip. The peak limiter detects this and
quickly reduces the gain to minimize the amount of overdrive, so
as to preserve as much of the program dynamics as possible.
2. PROTECT LED (YELLOW)
The power amplifier features several types of protection to
prevent damage to the circuitry during turn-on or fault conditions.
The power-on protection relay prevents damaging thumps to the
speakers as the power comes on. When the amplifier is switched
on, the protect LED will light for a few seconds, and then go out,
indicating that the relay has closed, connecting the speakers to
the amplifier.
The protect LED will also come on if the speaker terminals are
short circuited, or the impedance of the load between them is too
low. Under these circumstances, the protect LED will stay on until
the fault condition is rectified.
If the amplifier's large heat sinks go down for thermal reasons,
leave the power connected to the amplifier, try to improve
ventilation, and reduce the gain. Without power, the fan cannot
operate, and the amplifier will require longer to reach a low
enough temperature to restart.
3. SIGNAL LEDS (GREEN)
Each channel of the power amplifier features a small level meter
to show the level of the audio signal is run through the channel.
The thresholds for these indicators are -40, -20, and -10 dB. Any
signal above these levels will cause the corresponding LEDs to
illuminate.
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4. GAIN CONTROLS
These two knobs are the level controls for each channel of the
amplifier. The gain increases as the knob is turned clockwise.
This unit features detented gain controls.
5. POWER SWITCH
While the XP6000 features power-on muting, it is always a good
practice to reduce both the gain controls before turning on the
amplifier. The powering-up procedure for an audio system should
start from instruments and then mixer, and you should verify that
all system operations are normal before turning on the amplifier.
6. POWER LED
This LED will light up when the the XP6000 is enabled.
7. BRIDGE MONO
When the amplifier is switched to the bridge mono mode, the
bridge LED right next to the PHONIC logo will light up in red.
8. PARALLEL LED
When the amplifier is switched to the parallel mode, the parallel
LED next to the bridge LED will light up in yellow.
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XP6000