User manual MAC AUDIO MPX 4000

[. . . ] The amplifier may not be installed in small confined spaces or spaces without air circulation (e. Install the amplifier in such a way that it is protected as far as possible against vibrations and dust and dirt. Make sure that the input/output cables are sufficiently distant from the power supply cables as otherwise interference may occur. Make sure that the fuse and operating elements are accessible after installation. [. . . ] 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. The impedance in tri-mode may not fall below 2 ohm per channel. 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. 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 controls (3) and (4) 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. This makes the filter adaptable to the installed woofer's sound requirements. Only the frequencies above the set cross-over frequency will then be amplified. This effectively minimizes distortions caused by excessive membrane movement at low frequencies and small satellite loudspeakers without reducing the bass level. 4 BASS-BOOST The bass-boost function (5/6) is used to increase or equalize the lower bass frequencies. The LINE OUT connections allow the use of a subwoofer amplifier without requiring additional T-plugs and cables. 1 POWER SUPPLY / REMOTE SWITCH-ON CONNECTIONS (1) (2) (3) (4) (5) (6) GND terminal for the ground, to the battery's minus pole REM terminal for remote switch-on Terminal for + 12 V battery voltage Battery Cable fuse 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. [. . . ] Further claims, and in particular those for price reduction, cancellation of sale, compensation for damages or subsequential damages, are excluded. The guarantee period is not altered by the fact that we have carried out guarantee work. Unauthorized tampering with the equipment will invalidate this guarantee. Consult your authorized dealer first, if guarantee service is needed. [. . . ]