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POWER SUPPLY AND TURN-ON-CONNECTION
ATTENTION: Before you start with the installation, disconnect the ground connection from the ve-
hicle's battery in order to prevent short circuits.
The power wiring which is usually installed in on-board car networks is not sufficient for a power amplifier's de-
mands. Make sure that the power wires to GND and to the +12 V terminal has been sufficiently specified. A suf-
ficient cable cross section (see page 33, fig. 6) must be used to connect the battery to the amplifier's terminals.
First connect the GND terminal of the amplifier to an appropriate ground connection at the chassis. To ensure a
good connection, residue dirt and dust from the connection point. A loose connection may cause malfunctions
or interferences noise and distortion.
Then connect the +12 V terminal of the amplifier with the battery by using an appropriate cable (see page 33,
fig. 6) including an in-line fuse. This fuse should be located very close to the battery; for safety reasons not
more than 30 cm away.
Then connect the remote turn-on-wire from the head unit with the amplifier's REM terminal. A cable with a
cross-section of 0.5 mm
LOUDSPEAKER CONNECTION
- In 4-channel operation (i.e. one loudspeaker on each amplifier channel), the impedance must not be lower
than 2 Ω for each speaker.
- In bridging mode (two amplifier speaker outputs combined) the impedance must not be lower than 4 Ω 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 dam-
aged. This means a warranty void in such cases.
AUDIO SIGNAL CABLES
When installing the audio cables between the RCA outputs of the head unit and the RCA inputs of the ampli-
fier (Fig. 1,5), the audio and power supply cables should, if possible, not be routed along the same side of the
vehicle. We recommend a separated installation, e.g. routing the power cable through the cable channel on
the left side and the audio cables through the cable channel of the vehicle on the right side or vice versa. This
prevents interferences due to crosstalk into the audio signal.
INPUT MODE
By setting the switch INPUT MODE (Fig. 1,7) to the 2CH position, you switch the inputs to a 2-channel mode,
which allows a four-channel operation with only occupying the inputs FRONT.
INPUT SENSITIVITY (FRONT & REAR)
Turn the controller LEVEL INPUT (Fig. 1,4 and fig. 1,6) of the amplifier to the MIN position. Then turn the vol-
ume controller of the head unit to 80 - 90% of its full setting. Now turn LEVEL INPUT clockwise until you hear
some distortion. Then turn back the LEVEL INPUT slightly until you hear a cleaner sound.
is adequate.
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