AXTON ATB20P Руководство по установке и эксплуатации - Страница 3

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SAFETY INSTRUCTIONS

1. This unit is designed to be used in a vehicle with a 12 V battery and negative ground.

2. Before any wiring, always remove the negative terminal of the battery to prevent short-

circuiting. This is also the last lead to be (re-)connected.

3. Do not disassemble or alter the unit in any way, because that will also void your

warranty. Do not attempt to repair or to service the unit yourself, but contact an

authorized AXTON dealer instead.

4. Use only original accessories which are designed and manufactured for the unit,

otherwise you will risk to damage it. Install the unit according to the mounting manual

and use only the supplied mounting accessories. The forces of acceleration for

accidents are sometimes huge. Incorrect mounted units are a big risk for the driver

and the passengers of the car, during an accident.

5. Protect the unit from water and other liquids, which can enter the casing. A short

circuit or even fire could be the result.

6. Before you replace a defective fuse, try to find the cause for the short circuit. Please

pay attention to the cables of the power supply! If the short circuit doesn't result from

a failure of the power supply or wiring, you can replace the defective fuse with a new

one of identical value. If the short-circuit still exists, please contact an authorized

AXTON dealer.

7. Be careful not to drain the car battery while using the unit when the car engine is

turned off. Because the unit uses a considerable amount of energy and the battery

will be charged only while the engine is running, it might happen that the battery will

discharge to a point where it's not longer possible to start the engine.

8. If your car is parked in direct sunlight and there is a considerable rise in temperature

inside the car, allow the unit to cool off before operation.

9. The amplifier module employs a protection circuit to protect the transistors and the

woofer if the amplifier malfunctions. The amplifier's protection circuitry will shut-off

the amplifier in case of short-circuit, overload or DC offset at the speaker outputs or

in case of overheat. In case the cause for protection shut-off has been eliminated, the

amplifier will operate normally again (green LED ON/ Red LED OFF). Otherwise the

amplifier will continue to switch on and off!

10. Do not use the unit with a weak or old battery as its optimum performance depends on

a normal battery supply voltage.

11. Please pay attention to the volume inside your vehicle, because you are obliged to

notice exterior sounds like a police siren or you might face penalties in case of an

accident or even loose your insurance cover.

12. Do not operate the unit in any other way than described in this manual. Failure to

follow the instructions within this manual will void your warranty.

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INTERFERENCE

All advice on controls and adjustments is based on the assumption that you

are also thouroughly acquainted with all the requirements and features of the

entire audio equipment – especially the head-unit – connected to this amplifier!

All cables are sources of interference. The power cable and RCA audio cable are very

prone to interference; the remote cables far less. There is often interference caused by

the generator (buzzing or whining), ignition (cracking) or other car electronic parts. Most

of these problems can be eliminated by correct and careful cabling. In doing so, read the

following guidelines first:

Use only a screened audio cable for the wiring between RCA input of the amplifier

and RCA or DIN output of the head unit.

Lay the signal and power cables separately with enough distance from one another

and also from each other car cable. The REM cable to the automatic amp remote

output of the radio can be laid together with the signal cables. Avoid ground loops by

laying the ground wiring of all components to a center point in a star-like way.

You can find the best central point in measuring the voltage directly at the battery.

Now compare this voltage value with the chosen ground point and the (+) terminal of

the amplifier. lf the measured voltage offers less than 0.1 V difference you've found

the correct central, which should be clean and uncorroded. Otherwise you have to

look for another point. You should measure with the ignition being switched on and

additionally switched on other electronics (rear window heating and lights). If there

are noise pickups from external electrical sources into the speaker cables, divide the

core leads and twist them together.

If there are humming noises, use thicker ground cables or add further ground cables

to the chassis.

To reduce contact resistance and loose contacts, use core cable ends.

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