Safety precautions – Kenwood KAC-X41 User Manual

Page 2

English

Safety precautions

WARNING

To prevent injury or fire, take the following precautions:

• Mounting and wiring this product requires skills and experience. For safety’s

sake, leave the mounting and wiring work to professionals.

• When extending the ignition, battery, or ground wires, make sure to use

automotive-grade wires or other wires with the range of 14 mm2 (AWG 6)

to 21 mm2 (AWG 4) to prevent wire deterioration and damage to the wire

coating.

• To prevent a short circuit, never put or leave any metallic objects (such as

coins or metal tools) inside the unit.

• If the unit starts to emit smoke or strange smells, turn off the power

immediately and consult your Kenwood dealer.

• Do not touch the unit during use because the surface of the unit becomes

hot and may cause burns if touched.

CAUTION

To prevent damage to the machine, take the following

precautions:

• Be sure the unit is connected to a 12V DC power supply with a negative

ground connection.

• Do not open the top or bottom covers of the unit.
• Do not install the unit in a spot exposed to direct sunlight or excessive heat

or humidity. Also avoid places with too much dust or the possibility of water

splashing.

• When replacing a fuse, only use a new one with the prescribed rating. Using a

fuse with the wrong rating may cause your unit to malfunction.

• To prevent a short circuit when replacing a fuse, first disconnect the wiring

harness.

NOTE

• If you experience problems during installation, consult your Kenwood dealer.
• If the unit does not seem to be working right, consult your Kenwood dealer.

Cleaning the unit

If the front panel gets dirty, turn off the power and wipe the panel with a dry

silicon cloth or soft cloth.

CAUTION

Do not wipe the panel with a hard cloth or a cloth dampened by volatile

solvents such as paint thinner and alcohol. They can scratch the surface of the

panel and/or cause the indicator letters to peel off.

To prevent battery rise

When the unit is used in the ACC ON position without turning the engine ON, it

depletes the battery. Use it after starting the engine.

Protection function

The protection function is activated in the following situations:
This unit is equipped with a protection function for protecting this unit and your

speakers from various accidents or problems that can occur.
When the protection function is triggered, the PROTECTION indicator lights and

the amplifier stops operating.
• When a speaker wire may be short-circuited.
• When a speaker output contacts ground.
• When the unit malfunctions and a DC signal is sent to the speaker output.

Wiring

• Take the battery wire for this unit directly from the battery. If it’s connected to

the vehicle’s wiring harness, it can cause blown fuses etc.

• If a buzzing noise is heard from the speakers when the engine is running,

connect a line noise filter (optional) to each of the battery wire.

• Do not allow the wire to directly contact the edge of the iron plate by using

Grommets.

• Connect the ground wire to a metal part of the car chassis that acts as an

electrical ground passing electricity to the battery‘s negative - terminal. Do

not turn the power on if the ground wire is not connected.

• Be sure to install a protective fuse in the power cord near the battery. The

protective fuse should be the same capacity as the unit’s fuse capacity or

somewhat larger.

• For the power cord and ground, use a vehicle type (fireproof ) power wring

cord with a current capacity greater than the unit’s fuse capacity. (Use a power

wiring cord with the range of 14 mm2 (AWG 6) to 21 mm2 (AWG 4).

• When more than one power amplifier are going to be used, use a power

supply wiring wire and protective fuse of greater current-handling capacity

than the total maximum current drawn by each amplifier.

Speaker Selection

• The rated input power of the speakers that are going to be connected should

be greater than the maximum output power (in Watts) of the amplifier. Use of

speakers having input power ratings that are less than the output power of

the amplifier will cause smoke to be emitted as well as damage.

• Use speakers that have an impedance of 2Ω or greater. When more than one

set of speakers are going to be used, calculate the combined impedance of

the speakers and then connect suitable speakers to the amplifier.

4Ω

8Ω

2Ω

4Ω

8Ω

4Ω

Combined impedance

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08.10.21 3:48:32 PM