Important Installation Information - MAC Audio APM 2.0 Bedienungsanleitung

2. FeAtures
• Complementary push-pull final stage
• Automatic switching on/off via car radio
• Infinitely adjustable high pass and low pass filters
• Switchable bass equalizer
• Adjustable input sensitivity
• Bridgeable 2-/1-channel mode
• Tri-mode
• Electronic protective circuit against short circuiting, DC offset and excess temperature
• Mute switch for suppressing switch-on crackle interference
• Low-level outputs (cinch jacks) for connecting additional amplifiers
• High-level input for connecting to car radios without low-level output/cinch jacks
• Operating display (green LED) and overload indicator (red LED)
3.

iMPOrtAnt instAllAtiOn inFOrMAtiOn

• This appliance may only be connected to a 12 volt system with negative ground.
• The heat radiated when the amplifier is used means that sufficient air circulation is required at the place of
installation. It is very important that the cooler's cooler ribs do not contact any metal plating or any surfaces
which could impair air circulation. The amplifier may not be installed in small confined spaces or spaces without
air circulation (e.g. spare wheel recess or under the vehicle carpeting). Installation in the boot is recommended.
• 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.
• The appliance's reliability and performance depend on the quality of installation. Preferably get an expert to
install the system, particularly if you want to install several loudspeakers or a complex multi-way system.
4. COnneCtiOns
4.1 POWer suPPlY AnD AutOMAtiC sWitCHing On
important notice: Before commencing the installation, disconnect the plus terminals from the car battery
in order to prevent short circuits.
The power cabling usually installed in on-board car networks is not sufficient for a power amplifier's demands. Make
sure that the power lines to GND and to the +12 V terminal have been sufficiently specified. A cable cross-section of
at least 6 mm² must be used to connect the battery to the amplifier's terminals.
First connect the amplifier's GND terminal to the battery's minus pole. It is very important that the connection is
good. Dirt residues must be carefully removed from the battery's connection point. A loose connection may cause
malfunctions or interference noise or distortion.
The +12 V amplifier connection must then be connected with a power cable possessing an integrated fuse to the
battery's plus pole. The fuse must be located close to the battery, the length of cable from the battery's positive
pole to the fuse must be less than 60 centimetres for safety reasons. Only insert the fuse when all installation work,
including the connection of the loudspeakers, has been completed.
Now connect the car hi-fi receiver's remote control connection to the amplifier's REM control jack. A cable with a
cross-section of 0.75 mm² is sufficient for connecting the amplifier's REMOTE connection and the control device.
4.2 COnneCting tO A CAr rADiO WitH CinCH OutPuts
Use the „INPUT" low-level inputs when connecting a car radio with low level outputs (cinch jacks).
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.
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