Hertz MP 15K Unlimited Advance Manual page 17

General Precautions
• This symbol indicates that you have to pay attention to these
instructions. Disregarding them might cause accidental harms or
damage your amplifier.
• Before installing the amplifier, make sure you carefully read and
understand all instructions.
• The vehicle electrical system must have 12 VDC voltage with negative to ground.
Make sure your car has it in order to avoid any damages to your amplifier and to the vehicle.
• Pre-plan the configuration of your new amplifier and the best wiring routes to ease installation.
• Always wear protective eyewear when using tools that may generate splinters.
• During installation, keep the amplifier in its packing as long as possible; this will protect it
from damages.
• Secure all auxiliary devices you built to install the components to the vehicle structure through
brackets, screws, nuts and bolts; this insures stability and safety while driving.
• The amplifier detachment while driving can damage the people in the vehicle and other cars.
Make sure the amplifier is properly secured, paying utmost attention if installation is inside the
passenger's compartment. Do not carry out any installation inside the engine compartment.
• Before installing the amplifier, turn off the source and all other electronic devices in the audio
system to prevent any damages.
• Make sure the location you chose for the components does not affect the correct functioning
of the vehicle mechanical and electrical devices.
• Do not run the cables or install the amplifier next to electronic gearcases.
• Use extreme caution when cutting or drilling the car plate, checking there are no electrical wiring
or structural element underneath.
• Before connecting the power cable to the amplifier, disconnect the negative lead ( - ) from the
car battery.
• Make sure power cable is not short circuited during installation and connection.
• Power cable must have mechanically resistant and self-extinguishing insulation. Its section has
a size corresponding with what is suggested in this manual. Avoid to run it over or through sharp
edges or close to moving mechanical devices. Make sure it is well fixed all along its length.
Through a clamping screw block positive and negative cables just close to the amplifier where
power supply terminal blocks are.
• Use rubber grommets to protect the wire if it runs through a hole of the plate or use proper
materials if it is close to heat-generating parts.
• To ground the device ( - ) in the right way, use a screw in the vehicle chassis; scrape all paint
or grease from the metal if necessary, making sure that there is continuity between the battery
negative terminal ( - ) and the fixing point with a tester. If possible, connect all components to the
same ground point; this solution rejects most noise.
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• Route all signal cables away from power cables.
• Never run cables outside the vehicle; you would not be protected against wear and in case
of accidents.
• When installing speakers and the cables that connect them, make sure that non-insulated parts
never touch, even occasionally, the vehicle cutting parts. If they do, the amplifier protection is
activated.
• To prevent all problems, use very good quality cables, connectors and accessories, choosing
them from the Connection Audison catalogue.
• When installation is over, and before plugging the main power supply fuse, check the system
wiring and make sure all connections were done in the right way.
• Power amplifiers put an increased load on the battery and on its charging system.
We recommend checking your alternator and battery condition to ensure they can handle the
increased consumption. Standard electrical systems which are in good condition should be able
to stand this extra load without problems but we recommend the use of an energy storage
capacitor and/or a battery for high level audio systems.
• Put a fuse and its insulated fuse holder 40 cm max. far from the battery positive terminal;
connect one end of the power cable to it after connecting the other end to the amplifier.
The fuse value must be 50% higher than the amplifier built-in one. In case the cable supplies
several amplifiers, the fuse value will have to be 50% higher than the sum of the values of all
other fuses in the amplifiers.
• There must be good air circulation where the amplifier is installed; this area must not be affected
by humidity, rain, external deposits or parts coming from the vehicle mechanical devices. Do not
hinder in any way the cooling of the amplifier side fins.
• Install the amplifier in the vehicle parts where temperature is between 0°C (32°F) and
55°C (131°F).
WARNING. When working in demanding conditions, the amplifier can reach temperatures of
around 80 – 90°C (176÷194°F). Make sure it is not dangerously hot before touching it.
• Periodically clean the amplifier without using aggressive solvents that might damage it.
Dampen a piece of cloth with water and soap, wring it and clean the amplifier. Then use a
piece of cloth dampened with water only; eventually clean the amplifier with a dry piece of cloth.
• Remove dust and solid deposits from the heat sink side fins. Don't use compressed air
on the amplifier since it would push solid parts in the amplifier. If necessary, please contact a
specialised service centre for internal cleaning. Cooling system obstruction makes the amplifier
go in safety.
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