USB 3001 - 3002 - 3003
Class-D Power amplifiers
TWO AMPLIFIERS LINKED TO ONE CHANNEL
TROUBLESHOOTING
RUN indicator doesn t light up
• check all fuses on the amplifier
• check main fuse near the battery
• check plus and minus battery cables
• check remote voltage
Bass response is low
• one speaker cable could be disconnected
• the bass control on the r
adio is set on low
• an active crossover unit is adjusted wrong
© US Blaster Europe BV
RUN indicator is on but no sound
• check volume control on the radio
• check GAIN regulator on the amplifier
• check RCA cables and connections
• check speaker cables and connections
The amplifier switches on and off
• cable terminals and battery terminals are oxidized
• low voltage from the battery
• remote wire is connected wrong
• bad chassis ground connection with amplifier
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