Kenwood KAC-8401 User Manual
KENWOOD
KAC-8401
4-CHANNEL POWER AMPLIFIER
b
page
2-13
INSTRUCTION MANUAL
AMPLIFICATEUR DE PUISSANCE 4 CANAUX
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page
14-25
MODE D’EMPLOI
b
pagina
AMPLIFICADOR DE POTENCIA DE 4 CANALES
26-36
MANUAL DE INSTRUCCIONES
KENWOOD
CORPORATION
Take the time to read through this instruction manual.
Familiarity with installation and operation procedures will help
you obtain the best performance from your new power amplifier.
For
your
Record the serial number, found on the back
designated on the warranty card, and in the space provided below.
Refer to the model and serial numbers whenever you call upon your
KENWOOD
Model
0
PRINTED
records
dealer for information or service on the product.
KAC-8401 Serial number
IN
CHINA
B64-2573-00/00
(KV/EV)
of
the unit, in the spaces
Safety precautions
I
AWARNING
To
prevent injury or fire, take the following
precautions:
When extending the ignition, battery, or
ground wires, make sure to use automotivegrade wires or other wires with
(AWG
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.
1
ACAUTION
To
prevent damage to the machine, take the
following precautions:
Be sure the unit
power supply with
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
the wrong rating may cause your unit to
malfunction.
To prevent a short circuit when replacing
fuse, first disconnect the wiring harness.
pEEl
If you experience problems during
installation, consult your Kenwood dealer.
If the unit does not seem to be working right,
consult your Kenwood dealer.
FCC
WARNING
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.
I
10)
or more to prevent wire
1
is
connected to
a
negative ground
a
5
mm2
a
12V
a
fuse with
DC
Cleaning the unit
If the front panel gets dirty, turn off the power
and wipe the panel with
soft cloth.
I
ACAUTION
Do not wipe the panel with a hard cloth or
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
without turning the engine
battery. Use it after starting the engine.
I
a
dry silicon cloth or
ON,
Protection function
There
is a Protection function installed in the
unit to protect the unit and speakers from
various problems. When Protection operates,
the indicator informs you of the condition.
(Refer to page
5)
Accessories
External
View
Self-tapping screws
I
a
Part name
(04x
16
mm)
a
ON
position
it depletes the
Number
Items
of
2
English
lnstalla tion
Self-tapping screw
(04
x
16
Cooling fan
Installation board, etc.
(thickness
I
ACAUTION
Do
not install in the below locations;
(Unstable location, In
dusty location, In a place that gets hot, In a place that gets direct sunlight, In
gets hit by hot air)
Do
not install the unit under the carpet. Otherwise heat build-up occurs and the unit may be
damaged.
Install this unit in a location which allows heat to easily dissipate.
Once installed, do not place any object on top of the unit.
*The surface temperature of the amplifier will become hot during use. Install the amplifier in
place where people, resins, and other substances that are sensitive to heat will not come into
contact with it.
*This unit has cooling fans to decrease the internal temperature. Be careful not to block the
cooling fan openings when installing the unit. Blocking these openings will inhibit the cooling of
the internal temperature and result in malfunction.
When making a hole under a seat, inside the trunk, or somewhere else in the vehicle, check
that there
wiring harness, and be careful not to cause scratches or other damage.
Do
not install near the dashboard, rear tray, or air bag safety parts.
*The installation to the vehicle should securely fasten the unit to
obstruct driving. If the unit comes off due to a shock and hits
cause injury or an accident.
*After installing the unit, check to make sure that electrical equipment such as the brake lamps,
turn signal lamps and windshield wipers operate normally.
:
15
mm or more)
I
a
is
nothing hazardous on the opposite side such as a gasoline tank, brake pipe, or
my)
location that interferes with driving, In a location that gets wet, In a
a
place in which it will not
a
person or safety part, it may
a
location that
a
English
3
Controls / Indicator
This is a 4 channel amplifier including
stereo amplifiers in a body. One amplifier is
referred to as amplifier
amplifier
large variety of systems by combining the
switches and functions described in the
following.
@
@
B.
This unit is compatible with a
INPUT SENSITIVITY control
Set this control according to the pre-output
level of the center unit connected with this
unit, or to the maximum power output
the genuine-accessory car stereo.
The sensitivities of amplifiers A and B can
be adjusted independently regardless of the
position of the input selector switch.
Use the diagram on the right as a guide.
I
NOTE
For the pre-output level or the maximum
power output, refer to the "Specifications"
in the instruction manual of the center unit.
I
Bch BASS
Setting this switch to "ON" emphasizes the
bass.
You can use the BASS BOOST for amplifier
B only.
ON
position:
BASS BOOST is
OFF
position:
BASS BOOST is OFF.
BOOST
+6
A
and the other
switch
dB.
2
is
of
6
@
@
6
FILTER switch
This switch allows to apply high-pass or
low-pass filtering to the speaker outputs.
0
HPF (High-Pass Filter) position:
The filter outputs the band of higher
frequencies than the frequency set with the
FILTER FREQUENCY control.
OFF
position:
The entire bandwidth is output without
filtering.
0
LPF (Low-Pass Filter) position:
The filter outputs the band
frequencies than the frequency set with the
FILTER FREQUENCY control.
OPERATION switch
The amplification methods of the signals
input to amplifiers A and B can be selected
independently according to the setting of
this switch.
STEREO
The amplifier can be used as a stereo
amplifier.
MONO
Amplifies the signal input from the left side
only. Set to this position and make bridged
connections to use as a high-power
monaural amplifier. (The input right signal is
not output.)
@
INPUT SELECTOR switch
This switch selects the input method
signals to be amplified by amplifiers A and
6.
A
Amplifies both of the signals input to
amplifiers A and 6.
A
Amplifies only signal input amplifier A with
both amplifiers A and 6.
position:
(Lch) position:
B
position:
position:
of
lower
of
the
4
English
0
FILTER FREQUENCY control
When the FILTER switch is set to the HPF
(High-Pass Filter) or LPF (Low-Pass Filter)
position, the threshold frequency can be
adjusted with this control.
0
Power indicator
When the power is turned on, the Power
indicator lights.
If the Power indicator does not light when
the power is turned on, the protection
function may be activated. Check whether
there is any indication of trouble.
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
Power indicator goes
stops operating.
When a speaker wire may be shortcircuited.
When a speaker output contacts ground.
When the unit malfunctions and a DC
signal is sent to the speaker output.
When the internal temperature is high and
unit won't operate.
When a ground wire of the center unit
(cassette receiver, CD receiver, etc.) or
this unit is not connected to
serving as an electrical ground passing
electricity to the battery's negative
terminal.
off
and the amplifier
a
metal part
@
English
5
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