Nakamichi NGXA80.4, User Manual

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6 EN
● This unit is designed for negative ground 12 Volts DC operation only.
● Use speakers with an impedance of 2Ω or 4Ω (4Ω to 8Ω when used as bridged amplifier)
● Avoid installing the unit where:
– It would be subject to high temperatures, such as from direct sunlight or hot air from
the heater.
– It would be exposed to rain or moisture.
– It would be subject to dust or dirt.
● If your car is parked in direct sunlight and there is a considerable rise in temperature
inside the car, allow the unit to cool off before operation.
● When installing the unit horizontally, be sure not to cover the heatsink fins with the floor
carpet.
● If this unit is placed too close to the car radio, an interference may occur. In this case,
separate the amplifier from the car radio.
● This power amplifier employs a protection circuit to protect the transistors and speakers
if the amplifier malfunctions.
●Do not attempt to test the protection circuits by covering the heatsink or connecting
improper loads.
● Do not use the unit with a weak auto battery as its optimum performance depends on a
normal battery supply voltage.
●For safety reasons, keep the volume of your car audio system moderate so that you can
still hear normal traffic sounds outside your car.
If the fuse blows, check the power connection and replace the fuse. If the fuse blows
again after replacement, there may be an internal malfunction. In this case, consult your
dealer.
WARNING: Use the specified amperage fuse. Use of a higher amperage fuse may cause
serious damage.
PRECAUTIONS
FUSE REPLACEMENT
This amplifier is provided with a protection circuit which operates in the following cases
when:
– the unit is overheated.
– the speaker terminals are short circuited.
PROTECTION CIRCUIT: