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Safety Precautions - Kenwood KAC-8104D Instruction Manual

Class d mono power amplifier
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Safety precautions

To prevent injury or fire, take the following precautions:
• When extending the ignition, battery, or ground wires, make sure to use
automotive-grade wires or other wires with a 8 mm
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.
• Mounting and wiring this product requires skills and experience. For safety's
sake, leave the mounting and wiring work to professionals.
To prevent damage to the machine, take the following
• Be sure the unit is connected to a 12V DC power supply with a negative
ground connection.
• Do not open the 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
• 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
• If you experience problems during installation, consult your Kenwood dealer.
• If the unit does not seem to be working right, consult your Kenwood dealer.
• 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
• 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
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 a diameter of 8 mm
• 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 input power of the speakers that are going to be connected should be
greater than the 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 20 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.
0 . . •
. . . . . . . . . . . . .J
Combined impedance
(AWG 8) or more to
terminal. Do
(AWG 8) or greater.)
• • • •
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.
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 from running out
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.
This equipment may generate or use radio frequency energy. Changes or
modifications to this equipment may cause harmful interference unless the
modifications are expressly approved in the instruction manual. The user could
lose the authority to operate this equipment if an unauthorized change or
modification is made.
This equipment has been tested and found to comply with the limits for a
Class Bdigital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in
a residential installation. This equipment may cause harmful interference to
radio communications, if it is not installed and used in accordance with the
instructions. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio
or television reception, which can be determined by turning the eqUipment off
and on, the user is encouraged to try to correct the interference by one or more
of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the eqUipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which
the receiver is connected.
• Consult the dealer or an experienced radiolTV technician for help.
This Class Bdigital apparatus complies with Canadian ICES-Q03.
Declaration of Conformity with regard to the EMC
Directive 2004/108/EC
Kenwood Corporation
Ishikawa-machi, Hachioji-shi, Tokyo,
EU Representative's:
Kenwood Electronics Europe BV
37, 1422
AC UITHOORN, The Netherlands
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
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.



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