KAC-5204
STEREO/BRIDGEABLE POWER AMPLIFIER 3 page 2-11
INSTRUCTION MANUAL
AMPLIFICATEUR DE PUISSANCE STEREO/COMPATIBLE 3 page 12-21
MODE D’EMPLOI
ESTÉREO/AMPLIFICADOR DE POTENCIA CONECTABLE 3 página 22-31
MANUAL DE INSTRUCCIONES
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 records
Record the serial number, found on the back of the unit, in the spaces designated on the
warranty card, and in the space provided below. Refer to the model and serial numbers
whenever you call upon your Kenwood dealer for information or service on the product.
Model KAC-5204 Serial number
US Residence Only
Register Online
Register your Kenwood product at
© B64-4488-08/00 (KH/EH) 5707-00000-203-0S
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Information on Disposal of Old Electrical
and Electronic Equipment (applicable for
EU countries that have adopted separate
waste collection systems)
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 a diameter of 5 mm2 (AWG 10) or
greater.)
• 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.
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.
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
impedance of the speakers and then connect
suitable speakers to the amplifier.
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
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 Number of
Part name
View
Items
Self-tapping screws
(ø4 × 16 mm)
4Ω
4
4Ω
4Ω
Terminal cover (Power
terminal)
Speaker level input
cable
4Ω
1
1
2Ω
8Ω
Combined impedance
English ꢁ
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Controls / Indicator
SPEAKER OUTPUT
RIGHT
BRIDGED
LEFT
[
]
FUSE 25A
BATT.
P.CON
GND
POWER IN
ꢈ
ꢁ
ꢄ
ꢅ
ꢆ
40
30
20
10
(W)
ꢀ
SPEAKER LEVEL INPUT
LINE IN
0.5
0.5
FILTER
0.3
1
0.3
1
2
3
4
OFF
LPF
2
[
]
[
]
MIN
5
0.2 MAX
L
R
3
INPUT
[
]
V
SENSITIVITY
4
[
]
[
]
MAX
MIN
0.2
INPUT
5
[
]
V
SENSITIVITY
ꢃ
ꢂ
ꢀ ꢇ
Only frequencies of 80 Hz or lower are output.
(Frequencies above 80 Hz are cut.)
The speaker output is automatically switched to
monaural (L+R).
1 Speaker level input terminals
NOTE
• The genuine-accessory car stereo shall have a
maximum power output of no more than 40 W.
• Do not connect the speaker output leads from
a power amplifier (Optional) to the speaker
level input terminals of this unit, for this may
cause malfunction or damage.
5 Fuse (ꢀ5 A)
6 Battery terminal
7 Power control terminal
Controls the unit ON/OFF.
• Do not connect cables and leads to both RCA
cable input jacks and the speaker level input
terminals simultaneously, for this may cause
malfunction or damage.
NOTE
Controls the unit power. Be sure to connect it with
all the systems.
• Connect the power control lead to a power
supply which can be turned ON/OFF by
the ignition key switch (ACC line). With this
connection, shock noise may be generated
when the power of the genuine-accessory car
stereo is switched ON/OFF.
8 Ground terminal
9 Speaker output terminals
• Stereo Connections:
When you wish to use the unit as a stereo
amplifier, stereo connections are used.
The speakers to be connected should have an
impedance of 2Ω or greater. When multiple
speakers are to be connected, ensure that the
combined impedance is 2Ω or greater for each
channel.
2 LINE IN terminal
3 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 of the genuine-
accessory car stereo.
• Bridged Connections:
When you wish to use the unit as a high-
output monaural amplifier, bridged
Use the diagram on the right as a guide.
connections are used. (Make connections to
the LEFT channel 9 and the RIGHT channel ·
SPEAKER OUTPUT terminals.)
The speakers to be connected should have an
impedance of 4Ω or greater. When multiple
speakers are to be connected, ensure that the
combined impedance is 4Ω or greater.
NOTE
For the pre-output level or the maximum power
output, refer to the <Specifications> in the
instruction manual of the center unit.
4 FILTER switch
This switch allow filtering of the speaker output
signals.
• OFF position:
The original sound without filtering is output.
• LPF (Low Pass Filter) position:
4 English
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ꢀ
7 System examples
0 Power indicator
When the power is turned on, the Power indicator
lights.
• ꢀ-channel system:
Left speaker
L
L
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.
CENTER UNIT
R
R
Right speaker
FILTER
7 The protection function is activated in
the following situations:
OFF
LPF
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 off 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.
• Subwoofer system:
CENTER UNIT
FILTER
L
L
R
R
Subwoofer
(Bridged)
OFF
LPF
• 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 a metal part serving as
an electrical ground passing electricity to the
battery's negative · terminal.
English 5
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Installation
198 mm
131 mm
Self-tapping screw
(ø4 × 16 mm)
Installation board, etc.
(thickness : 15 mm or more)
• When making a hole under a seat, inside the
trunk, or somewhere else in the vehicle, check
that there is nothing hazardous on the opposite
side such as a gasoline tank, brake pipe, or 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 a place in which it will not
obstruct driving. If the unit comes off due to a
shock and hits a person or safety part, it may
cause injury or an accident.
CAUTION
• Do not install in the below locations;
(Unstable location, In a location that interferes
with driving, In a location that gets wet, In a dusty
location, In a place that gets hot, In a place that
gets direct sunlight, In a location that 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.
• After installing the unit, check to make sure that
electrical equipment such as the brake lamps,
turn signal lamps and windshield wipers operate
normally.
• The surface temperature of the amplifier will
become hot during use. Install the amplifier in a
place where people, resins, and other substances
that are sensitive to heat will not come into
contact with it.
ꢂ English
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WARNING
Remove the ignition
key and disconnect the
negative · terminal of
the battery to prevent
short circuits.
7 Installation procedure
Since there are large variety of settings and
connections possible according to applications, read
the instruction manual well to select the proper
setting and connection.
1. Remove the ignition key and disconnect the
negative · terminal of the battery to prevent short
circuits.
2. Set the unit according to the intended usage.
3. Connect the input and output wires of the units.
4. Connect the speaker wires.
5. Connect the power wire, power control wire and
grounding wire following this order.
6. Install the unit in the car.
7. Connect the negative · terminal of the battery.
CAUTION
• If sound is not output normally, immediately turn
power off and check connections.
• Be sure to turn the power off before changing the
setting of any switch.
• If the fuse blows, check wires for shorts, then
replace the fuse with one of the same rating.
• Check that no unconnected wires or connectors
are touching the car body. Do not remove caps
from unconnected wires or connectors to prevent
short circuits.
• Connect the speaker wires to appropriate speaker
connectors separately. Sharing the negative wire
of the speaker or grounding speaker wires to the
metal body of the car can cause this unit to fail.
• After installation, check that the brake lamps,
winkers, and wipers work properly.
English ꢃ
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Connection
7 RCA cable or Speaker level input connection
(RCA cable Connections)
RCA cable*
CENTER UNIT
(CD receiver, etc.)
Power control wire*
(Blue/ White)
SPEAKER LEVEL INPUT
LINE IN
0.5
FILTER
0.3
1
2
3
4
OFF
LPF
[
]
[
]
MIN
5
0.2 MAX
L
R
INPUT
SENSITIVITY
[
]
V
Left input
Right input
(Speaker level input Connections)
Car fuse box
SPEAKER LEVEL INPUT
LINE IN
0.5
FILTER
0.3
1
2
3
4
OFF
LPF
[
]
[
]
MIN
5
0.2 MAX
L
R
INPUT
SENSITIVITY
[
]
V
Battery
ACC
Genuine-accessory car
stereo (No line output
center unit etc.)
Cable Color of the connector
White
Speaker level input cable
Left
White/Black
Gray
Right
Gray/Black
8 English
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* Commercially available parts
7 Speaker wire connection
(Stereo Connections)
SPEAKER OUTPUT
RIGHT
BRIDGED
LEFT
[
]
FUSE 25A
BATT.
P.CON
GND
POWER IN
Right
speaker
Left
speaker
Lead terminal*
(Bridged Connections)
SPEAKER OUTPUT
RIGHT
BRIDGED
LEFT
[
]
FUSE 25A
BATT.
P.CON
GND
POWER IN
Speaker (Bridged)
7 Power wire connection
SPEAKER OUTPUT
RIGHT
BRIDGED
LEFT
[
]
FUSE 25A
BATT.
P.CON
GND
OWER IN
Terminal cover
Lead terminal*
Power control wire*
Battery wire*
Ground wire*
Protective Fuse*
Battery
English ꢄ
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Troubleshooting Guide
What might appear to be a malfunction in your unit may just be the result of slight misoperation or
miswiring. Before calling service, first check the following table for possible problems.
PROBLEM
POSSIBLE CAUSE
SOLUTION
No sound.
• Input (or output) cables are
• Connect the input (or output) cables.
(No sound from one side.) disconnected.
(Blown fuse.)
• Protection circuit may be activated.
• Check connections by referring to
<Protection function>.
• Replace the fuse and use lower
volume.
• After check the speaker cord and
fixing the cause of the short, replace
the fuse.
• Volume is too high.
• The speaker cord is shorted.
The output level is too
small (or too large).
• The input sensitivity adjusting control • Adjust the control correctly referring
is not set to the correct position. to <Controls>.
The sound quality is bad. • The speakers wire are connected with • Connect them properly checking the
(The sound is distorted.)
wrong ª/·polarity. ª/· of the terminals and wires well.
• A speaker wire is pinched by a screw • Connect the speaker wire again so
in the car body. that it is not pinched by anything.
• The switches may be set improperly. • Set switches properly by referring to
<System examples>.
10 English
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Specifications
Specifications subject to change without notice.
CEA-ꢀ00ꢂ
RMS Watts per channel @ 4 ohms, 1 % THD+N.........................................................................................60 W × 2
Signal to Noise Ratio (Reference: 1Watt into 4 ohms)...............................................................................75 dBA
Audio Section
Max Power Output ...............................................................................................................................................................................................350 W
Rated Power Output
Normal (4 Ω) (20 Hz – 20 kHz, 1.0 % THD).....................................................................................................................................60 W × 2
(4 Ω) (DIN : 45324 , +B = 14.4V).........................................................................................................................................60 W × 2
(2 Ω) (1 kHz, 1.0 % THD)..........................................................................................................................................................75 W × 2
Bridged(4 Ω) (1 kHz, 1.0 % THD).......................................................................................................................................................150 W × 1
Frequency Response (+0, –3 dB)................................................................................................................................................. 5 Hz – 50 kHz
Sensitivity (rated output) (MAX.) ......................................................................................................................................................................0.2 V
Sensitivity (rated output) (MIN.) .......................................................................................................................................................................5.0 V
Signal to Noise Ratio..............................................................................................................................................................................................94 dB
Input Impedance.....................................................................................................................................................................................................10 kΩ
Low Pass Filter Frequency (-12 dB/oct.).....................................................................................................................................................80 Hz
General
Operating Voltage...................................................................................................................................................14.4 V (11 – 16 V allowable)
Current Consumption ............................................................................................................................................................................................18 A
Dimensions (W × H × D).....................................................................................................................................................198 × 59 × 230 mm
7-13/16 × 2-5/16 × 9-1/16 inch
Weight.........................................................................................................................................................................................................1.7 kg (3.7 lbs)
English 11
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