Crunch GTi2100 Mode D'emploi page 10

LOUDSPEAKER CONNECTIONS
- In 2-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 ADDITIONAL AMPLIFIERS
The input signal on the INPUT jacks (Fig. 1,4) will be routed in stereo to the output jacks OUTPUT
(Fig. 1, 3). Thus the OUTPUT jack allows the connection of an additional amplifier.
OPERATING ELEMENTS
INPUT SENSITIVITY
The input sensitivity can be adjusted to any headunit. Turn the volume control of your headunit to the
center medium position and then adjust the input level controls (Fig. 1,5) until you have an average
medium level. This setting usually provides sufficient power reserves at optimum signal-to-noise ratio.
VARIABLE HIGHPASS FILTER
If the amplifier is to be used for mid-range/tweeter loudspeakers, set the switch (Fig. 1,6) to "HP". Set
the desired cross-over frequency on controller (Fig.1, 7). Thus to that only the frequencies above the
chosen cross-over frequency will be amplified. This effectively minimizes distortions and overloads at
lower frequencies. A good point to start is at 125 Hz. For bigger loudspeakers (>20 cm) set the switch
(Fig. 1,6) to "FULL". In this configuration the high pass controller (Fig.1, 7) is without function.
VARIABLE LOWPASS FILTER
If the amplifier is used to drive a subwoofer, set the switch (Fig. 1, 6) to "LP". Set the desired cross-
over frequency by using the controller (Fig. 1, 8). Thus to that only the frequencies below the chosen
cross-over frequency will be amplified and the subwoofer plays more accurate and efficient.
VARIABLE BASS BOOST
With the bass boost controller (Fig.1, 9) you are able to adjust the bass level from 0 - 12 dB at 45 Hz.
ENG
10