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4. Fuse Replacement
• Only fit or replace a fuse when the device is unplugged from the mains.
• Replace a blown fuse with a fuse of the same type and rating (250Vac/6,3A 5x20mm fuse, order code FF6.3N):
1. Unscrew the fuse holder cap at the back with an appropriate screwdriver.
2. Remove the old fuse and install a new one.
3. Replace the fuse holder and fasten it with the screwdriver.
5. Use
a. Front Panel
1. ON/OFF switch, illuminated when ON.
2. CHANNEL A gain control. In MONO/BRIDGE use, it will control both channels simultaneously.
3. CHANNEL B gain control
4. CHANNEL A/B LEDs:
- Clipping LED ('CLIP'): yellow LED, indicates a state of over-modulation (distortion at high volumes).
Check the input signal to the amplifier and turn down its level if possible. If not, turn down the gain control on the
amplifier. Keep in mind that the amplifier cannot correct a distorted signal.
- Signal LED ('SIGNAL'): this green LED indicates a safe operation (output -30dB~0dB).
- Protection LED ('PROTECT'): lights up when the amplifier gets too hot.
b. Back Panel
5. Channel B 6.35mm and XLR balanced inputs
6. Cooling fan holes
7. Channel A 6.35mm and XLR balanced inputs
8. Channel B output (min. loudspeaker impedance: 4
9. Bridge output: to be used when selector switch #13 is set to 'BRIDGE' (min. loudspeaker impedance: 8
10. Channel A output (min. loudspeaker impedance: 4
11. Fuse holder
12. Mains connector
13. BRIGE/STEREO selection switch
VPA2450MB / VPA2620MB / VPA2700MB
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