HQ Power VPA2200U1 Mode D'emploi page 4

2. Power LED indicators
These LEDs illuminate when the power is turned ON.
3. Limit LED indicators
These LEDs illuminate if any section of the power amplifier's input are within 3dB of clipping. Occasional blinking
of the LEDs are acceptable, but if they remain on more then intermittently you should turn down the level on the
amplifier or reduce the output level of the preceding component to avoid audible distortion.
4. Signal LED indicators
These LEDs illuminate to confirm the presence of an input signal greater than 100mV at that channel of the
amplifier.
5. Protect LED indicators
These LEDs illuminate if the power amplifier's output connection is shorted or the load impedance is too low.
When either of these LEDs is lighting up, turn OFF the power and check the output connection to verify that it is
correct, then turn ON the power again.
6. Level Controls
These control the level of signal coming into each channel. The actual voltage gain of the amplifier is shown in
dB. Turn these controls counter clockwise if the peak LEDs illuminate steadily (indicating too strong input signal).
b. Rear panel (fig. 2)
7. Power connector
The power connection is used to connect the AC power source to your power amplifier.
CAUTION: Do not remove the grounding pin.
8. Fuse holder
When the fuse has been blow up always replace by a fuse of the same range. If these fuse continuously blow,
shut down the amplifier and ask a qualified person to check the unit.
9. AC voltage selector switch
Before plugging the power cord, check to see that the unit is set for the proper voltage for your area, i.e. 115VAC /
60Hz or 230VAC / 50Hz.
10. Input connector
Connect your input signal to these unbalanced ¼" input jacks.
11. Left / Right channel output connectors
Connect these to your left and right speaker box with a Speakon
12. Fans
The fan speed is varied continuously and automatically to maintain the proper internal operating temperature.
8. Installation
a. Rack Installation
• This amplifier is built for 19" racks. The rack should be fitted with a cooling fan. When mounting the amplifier,
make sure there is enough free space around the device for the evacuation of hot air. Continuous overheating
will damage your device.
• Fix the amplifier with four screws M6.
VPA2200U1
connection.
®
4 VELLEMAN