Cleaning The Unit; Protection Function; Speaker Selection - Kenwood KAC-X4D Instruction Manual

Information on Disposal of Old Electrical
and Electronic Equipment (applicable for
EU countries that have adopted separate
waste collection systems)
Products with the symbol (crossed-out
wheeled bin) cannot be disposed as
household waste.
Old electrical and electronic equipment
should be recycled at a facility capable
of handling these items and their waste
byproducts. Contact your local authority
for details in locating a recycle facility
nearest to you. Proper recycling and waste
disposal will help conserve resources whilst
preventing detrimental effects on our
health and the environment.
This Product is not installed by the manufacturer of a
vehicle on the production line, nor by the professional
importer of a vehicle into an EU Member State.

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.
7 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.

7 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.
• The impedance of the speakers that are going
to be connected should be 2Ω or greater (for
stereo connections), or 4Ω or greater (for bridged
connections). When more than one set of speakers
are going to be used, calculate the combined
4Ω
impedance of the speakers and then connect
suitable speakers to the amplifier.
4Ω
4Ω
4Ω
4Ω 4Ω
4Ω
4Ω
4Ω
2Ω
8Ω
4Ω
4Ω
2Ω
8Ω
Combined impedance
4Ω 4Ω
4Ω 4Ω

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