MAC Audio ZXS 1000 Mode D'emploi page 8

4.2 AUDIO CABLES
When installing the audio cable between the cinch output of your car receiver and the cinch input of the amplifier inside your car, the
audio and power supply cables should, wherever possible, not be routed along the same side of the vehicle. We recommend an isolated
installation, e.g. routing the power cable through the cable duct on the left-hand side and the audio cable through the cable duct on the
right-hand side or vice versa. This reduces interference due to crosstalk into the audio cables.
This also applies to the connecting cable for the remote control for regulating the volume. This cable should not be laid on the side of the
power supply leads but together with the audio cable.
4.3 LOUDSPEAKER CONNECTIONS
· The lowest terminal resistance is 2 ohm
· Never connect the loudspeakers' minus terminals to the vehicle chassis.
· Never connect the +12 V supply voltage to a loudspeaker output as this would destroy the amplifier final stage.
If the amplifier is operated with lower terminal resistances or incorrectly used as described above, both the amplifier and the
loudspeakers may be damaged. The warranty becomes void in such cases.
5. OPERATING ELEMENTS AND IN/OUTPUTS
5.1 SETTING THE INPUT SENSITIVITY
The input sensitivity may be adapted to any car radio or tape deck. Turn the volume control of your radio to its central position and then
adjust the input-level control (5) to produce an average medium volume. This setting usually provides sufficient power reserves at optimum
weighted noise voltage.
ATTENTION: only reproduce loud test noises briefly to prevent damaging the loudspeakers.
5.2 LOW-PASS FILTER WITH ADJUSTABLE CROSS-OVER FREQUENCY
Set the desired cross-over frequency with the control (3). This makes the filter adaptable to the installed woofer's sound requirements. The
filter's high edge steepness is responsible for the precision reduction of medium and high frequency ranges.
5.3 SUBSONIC FILTER
The subsonic function reduces the lowest bass frequencies. The reduction rate may be infinitely adjusted with the regulator (4). This
allows distortions produced by excessive loudspeaker membrane movements to be effectively minimized without reducing the utilizable
bass levels.
5.4 BASS-BOOST
The bass-boost function (2) is used to increase or equalize the lower bass frequencies.
5.5 VOLUME REMOTE CONTROL
The volume may be adjusted by using the supplied remote control. Please observe during installation that the remote control line shouldn't
be routed along the same side of the vehicle as the power supply cables. The remote control unit should be mounted on the dashboard or
at any other easily accessible position. Now, the subwoofer volume may be adjusted independently from the settings at the radio.
5.6 OUTPUTS FOR CONNECTING ADDITIONAL AMPLIFIERS
The input signal of the LINE INPUT connections LINE INPUT L and R (7) is forwarded directly to the OUTPUT (6) L and R jacks. The
OUTPUT connections allow the use of additional amplifiers without requiring additional T-plugs and cables.
FIG. 1 POWER SUPPLY / REMOTE SWITCH-ON CONNECTION
(1) GND terminal for the ground, to the battery's minus pole
(2) REM terminal for remote switch-on
(3) Terminal for +12 V battery voltage
(4) Battery
(5) Cable fuse
(6) To your car radio's automatic aerial connection
If your car is not equipped with an automatic aerial connection, connect this cable's plus pole (+) to the ignition lock. An on/off switch
should be inserted in this case. Make sure that this switch is switched off if the amplifier is not used.
FIG. 2 OPERATION WITH STEREO CAR RADIO
Connect and set the amplifier as shown in Fig. 2 if it is to be controlled by a car radio with two output channels. Operation of the low-pass
filter used is described in Chapter 5.2.
(1) To the car radio, left output
(2) To the car radio, right output
(3) Subwoofer
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