Nakamichi NGXA80.4, User Manual

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4 EN
Panel Controls and features
A. HIGH PASS CROSS FREQUENCY
Controls the frequency of the power amplifier of high frequency reduction to common denominat or is
20Hz to 3KHz.
B. X-OVER CONTROL
Depending on the selected switch setting the amplifier operates in fullrange, highpass or Lowpass mode.
C. LOW PASS CROSS FREQUENCY
Controls the frequency of the power amplifier of Low frequency reduction to common denominat or is
50Hz to 3KHz.
D. BASS BOOST LEVEL KNOB
The Bass BOOST feature will increase the sound level in the bass frequencies.
E. GAIN CONTROL
The gain control will match the amplifiers sensitivity to the source units signal voltage.
F. LOW LEVEL RCA INPUT
These RCA input jacks connect with your source unit RCA Low level outputs or via optional adapter with
your source unit speaker high level outputs. The use of high quality twisted pair car audio cables is
recommended to mind possibility of disturbance the audio signal.
G. SPEAKER CONNECTIONS
connect speakers/subwoofers to these terminals. Be sure to check wire for proper polarity. Never connect
the speaker cables to chassis ground.
H. Fuse
the fuses protect the car should a catastrophic problem occur in the amp. Always replace fuses with the
same size fuse.
I. Protection indicator
this red LED will light up and will be flashing if there is a fault presented to the amplifier. Please disconnect
the amplifier and resolve the fault before reconnecting the amplifier.
J. Power indicator
this LED will light up when amplifier works properly.
K. + 12V = POWER SUPPLY
connect this terminal through a fuse or circuit breaker to the positive terminal of the vehicle battery or
the positive terminal of an isolated audio system battery.
L. REM(ON/OFF) REMOTE CONTROL
when use Hi-Input, the amp can detect the DC offset from the high level input signal to auto turnON/OFF.
when the amp turns on , The REM terminal will 12V DC to control the other device turn ON/OFF.
REM IN: When use Low level input , the amp rem in should be connected to the rem out of the source unit.
The head unit controls the amp turn ON/OFF.
N. GND(-) = GROUND CONNECTION
Connect this cable directly to the frame of the vehicle. make sure the metal frame has been stripped of
all paint down to the bare metal. Use the shortest distance possible. It is always a good idea to replace
the vehicle battery ground terminal or any other factory ground points.
M. INPUT MODE SWITCH
If your head unit has one single pair of rca outputs, input them in to the amplifiers channel 1 and 2 input
jacks and set the input mode switch to 2ch. The amplifiers preamp circuitry will automatically mix all the
channels and output will occur on all 4 channels.
If your head unit has two pairs of rca outputs, input front left and front right in to the amplifier channels 1 and
2 input jacks. Rear left and rear right in to amplifiers channels 3 and 4 input jacks. Set the input mode switch
to 4ch. The amplifiers preamp circuitry will automatically mix all the Channels and output will occur on all 4
channels.
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