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HQ-Power VPA300MB Manual Del Usuario página 6

Amplificador de potencia - 2 x 300w rms (19'), puente

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4. Power switch
Push this switch and the soft-start circuit of the amplifier will be activated. After the soft start, connect with the
speakers. The amplifier will be on standby.
5. LED state indicator
When turning on the VPA300MB, the red/green indicators will both flash. When operating normally, the green
LED will light.
6. Signal LEDs channel B
The green LED indicator lights to indicate the corresponding level. When the red LED (CLIP) indicator lights, it
means that the amplifier is distorted.
7. 20-step level control for channel B
In bridged or mono parallel connection mode, only this knob is used
b. Back Panel (fig. 2)
1. Cooling fan with variable speed
Automatically runs when the temperature exceeds 35°C. The speed changes depending on the temperature.
Prevent noise interference when the fan runs.
2. Circuit breaker
Automatically cuts off the power supply in case of over-voltage. The amplifier can easily be reset with this
switch.
3. Channel A XLR input
Wiring: pin 1: signal ground; pin 2: signal + (hot); pin 3: signal – (cold).
4. Channel A XLR input (Link)
Wiring: pin 1: signal ground; pin 2: signal + (hot); pin 3: signal – (cold).
5. Limiter switch and LED indicator
• Turn on/off the limiter switch manually to effectively protect the speaker.
• ON (red light on): the amplifier works within the output rate.
• OFF (red light off): the amplifier output is not controlled.
6. Channel B XLR input
Wiring: pin 1: signal ground; pin 2: signal + (hot); pin 3: signal – (cold).
7. Channel B XLR input (Link)
Wiring: pin 1: signal ground; pin 2: signal + (hot); pin 3: signal – (cold).
8. Suspending / ground switch
When the switch remains suspending, the insulation resistance of the grounding wire and housing exceed 1M
ohms. Otherwise, the grounding wire is connected to the housing.
9. Limiter
4 or 8 ohms limit mode switch (select the appropriate mode according to the impedance).
10. Mode switch (2 possible modes):
• Mono bridged mode: the output voltage is doubled; use 4 ohms or a higher impendence.
• Stereo work mode.
VPA300MB
All manuals and user guides at all-guides.com
6
VELLEMAN

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