Operating Elements - Crunch GROUND POWER GPX1000.1D Manual De Uso

AUDIO SIGNAL CABLES
When installing the audio cables between the RCA outputs of the head unit and the RCA inputs of the amplifier,
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.
SIGNAL OUTPUTS FOR ADDITIONAL AMPLIFIERS
The input signal on the INPUT jacks (Fig. 1,2) will be routed in stereo to the output jacks OUTPUT (Fig. 1,1).
Thus the OUTPUT jack allows the connection of a additional amplifier.

OPERATING ELEMENTS

INPUT SENSITIVITY
Turn the GAIN (Fig. 1,3) controller of the amplifier to the MIN position. Then turn the volume controller of the
head unit to 80 - 90% of its full setting. Now turn GAIN clockwise until you hear some distortion. Then turn back
the GAIN slightly until you hear a cleaner sound.
VARIABLE SUBSONIC FILTER
With the SUB SONIC controller (Fig. 1,5) you can adjust the lower crossover frequency, to filter the very low
frequencies to relieve the subwoofer or to generate a bandpass signal. If you don't want to use this function,
turn the controller (Fig. 1,5) to the very left to the 10 Hz position.
NOTE: The adjusted value of the SUB SONIC (Fig. 1,5) should not be higher than the adjusted value of the
LPF controller (Fig. 1,6). Otherwise no sound will be audible.
VARIABLE LOW PASS FILTER
Set the desired crossover frequency by using the controller LPF (Fig. 1,6). Thus to that only the frequencies
below the chosen crossover frequency will be amplified and the subwoofer plays more precisely and efficient.
PHASE SHIFT SWITCH
The PHASE SHIFT switch (Fig. 1,4) allows to set the phase between 0° or 180° to match the run time of the
output signal with the vehicle's interior acoustic.
VARIABLE BASS BOOST
With the bass boost controller (Fig.1,7) you are able to adjust the bass level from 0 - 12 dB.
Attention: Use the BASS BOOST wisely!
BASS LEVEL REMOTE CONTROLLER
With the included bass level cable remote controller you are able to adjust the bass level e.g. out of the driver's
seat.
10