Crunch GTO4120, Руководство пользователя

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11
ENG
+
-
blue = speaker - right - CH2 - positive
-
+
white = speaker - right - CH2 - negative
orange = speaker - left - CH1 - negative
yellow = speaker - left - CH1 - positive
LOUDSPEAKER CONNECTIONS
- In 4-channel operation (i.e. one loudspeaker on each amplifier channel), the impedance must
not be lower than 2 ohms for each speaker
- In bridging mode (two amplifier outputs combined) the impedance must not be lower than 4 ohms
for the bridged output.
- Never connect loudspeaker cables with the ground of the chassis or the +12 V supply voltage.
If the amplifier is operated with a too low impedance or incorrectly used, the entire sound system
may be damaged. This means a warranty void in such cases.
SIGNAL OUTPUTS TO CONNECT AN ADDITIONAL AMPLIFIER
Due to its compact design, the amplifier has no signal outputs to supply additional amplifiers, such as
a mono subwoofer amplifier. Split in this case the input signal with a suitable Y-connector to provide
the input signal to both amplifiers.
OPERATING ELEMENTS
Turn the input level controls (INPUT LEVEL, Fig. 1, 3) for each channel pair on the amplifier to the MIN.
position. Turn then the volume control of the headunit to 80% - 90% of its maximum volume. Now turn
slowly the input level control on the amplifier (INPUT LEVEL, Fig. 1, 3) in a clockwise direction until
you hear some distortion, then turn back slightly until the distortion is not audible anymore.
INPUT SENSITIVITY
The HIGH LEVEL INPUTS (Fig. 1, 1) are suitable to connect the amplifier inputs with speaker wires,
if your headunit is not equipped with pre-amplifier RCA outputs. Extend therefore every regarding
speaker cable from your headunit with appropriate speaker cables from your car audio retailer to the
mounting location of the amplifier. Then connect the each matching loudspeaker cable with the cables
of the included HIGH LEVEL jacks like described below.
NOTE: Never use the HIGH LEVEL INPUTS and the RCA inputs at the same time. This may damage
the amplifier seriously. The loudspeaker cables of the HIGH LEVEL INPUTS must have no contact to
the ground (GND).
HIGH LEVEL INPUTS
The amplifier detects a voltage rise (6 Volts) with a so called ”DC Offset” over the connected input
signal on the HIGH LEVEL INPUTS (Fig. 1, 1) when the headunit will be switched on. Hence, the
amplifier will also be turned on. As soon as the headunit will be turned off, the amplifier turns also
automatically off. In this case the turn-on connection (REM, Fig. 2, 2) is not needed.
Note: The Auto Turn On function usually works with 90% of all headunits, because they are equipped
with ”High Power”-outputs. Only with a few older and still existing headunits the Auto Turn On function
is not working.
AUTO TURN ON
+
-
blue = speaker - right - CH3 - positive
-
+
white = speaker - right - CH3 - negative
orange = speaker - left - CH4 - negative
yellow = speaker - left - CH4 - positive