Kenwood KAC-5201 Manual

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)
(No sound from one side.) disconnected. cables.
• Protection circuit may be • Check connections by referring
activated. to "Power indicator".
(Blown fuse.) • Volume is too high. • Replace the fuse and use lower
volume.
• The speaker cord is shorted. • After check the speaker cord and
fixing the cause of the short,
replace the fuse.
The output level is too The input sensitivity adjusting Adjust the control correctly
small (or too large). control is not set to the correct referring to "Controls".
position.
The sound quality is bad. • The speakers wire are • Connect them properly checking
(The sound is distorted.) connected with wrong + / - the + / - of the terminals and
polarity. wires well.
• A speaker wire is pinched by a • Connect the speaker wire again
screw in the car body. so that it is not pinched by
anything.
• The switches may be set • Set switches properly by
improperly. referring to "System examples".
Specifications
Specifications subject to change without notice.
Audio Section ........................................................................KAC-6201 KAC-5201
Max Power Output ..............................................................................................350 W × 1 250 W × 1
Rated Power Output (4 Ω)
Normal (20 Hz – 20 kHz, 0.08 % THD)................................................................60 W × 2 40 W × 2
Bridge (1 kHz, 0.8 % THD) ................................................................................150 W × 1 120 W × 1
Rated Power Output (2 Ω)
Normal (1 kHz, 0.8 % THD) ................................................................................75 W × 2 60 W × 2
Frequency Response (+0, –1 dB) ..................................................................10 Hz – 45 kHz 5 Hz – 50 kHz
Signal to Noise Ratio ..................................................................................................100 dB 100 dB
Sensitivity (MAX) (rated output) ....................................................................................0.2 V 0.2 V
Sensitivity (MIN) (rated output) ......................................................................................5.0 V 5.0 V
Input Impedance ..........................................................................................................10 kΩ 10 kΩ
Low Pass Filter (12 dB/oct.) ..........................................................................................80 Hz 80 Hz
High Pass Filter (12 dB/oct.) (KAC-6201 only) ............................................................150 Hz
General....................................................................................KAC-6201 KAC-5201
Operating Voltage (11 – 16 V allowable) ......................................................................14.4 V 14.4 V
Current Consumption (1 kHz, 10% THD) ......................................................................19 A 16 A
Dimensions (W × H × D)[mm] ........................................................................228 × 59 × 228 228 × 59 × 160
Dimensions (W × H × D)[inch] ..........................................................................9 × 2-5/16 × 9 9 × 2-5/16 × 6-5/16
Weight ............................................................................................................2.8 kg (6.1 lbs) 2.1 kg (4.6 lbs)
■ Wiring
Safety precautions
• If a buzzing noise is heard from the speakers
when the engine is running, connect a line noise
2WARNING
filter (optional) to each of the battery wire.
To prevent injury or fire, take the following
• Do not allow the wire to directly contact the edge
precautions:
of the iron plate by using Grommets.
• When extending the ignition, battery, or ground
• Connect the ground wire to a metal part of the
wires, make sure to use automotive-grade wires or
car chassis that acts as an electrical ground
passing electricity to the battery's negative -
other wires with a 3mm 2 (AWG12) or more to
terminal. Do not turn the power on if the ground
prevent wire deterioration and damage to the wire
wire is not connected.
coating.
• Be sure to install a protective fuse in the power
• To prevent a short circuit, never put or leave any
cord near the battery. The protective fuse should
metallic objects (such as coins or metal tools) inside
be the same capacity as the unit's fuse capacity
the unit.
or somewhat larger.
• If the unit starts to emit smoke or strange smells,
• For the power cord and ground, use a vehicle
turn off the power immediately and consult your
type (fireproof) power wring cord with a current
Kenwood dealer.
capacity greater than the unit's fuse capacity.
• Do not touch the unit during use because the surface
(Use a power wiring cord with a diameter of 3
of the unit becomes hot and may cause burns if
mm 2 (AWG 12) or greater.)
touched.
• When more than one power amplifier are going
to be used, use a power supply wiring wire and
2CAUTION
protective fuse of greater current-handling
To prevent damage to the machine, take the
capacity than the total maximum current drawn
following precautions:
by each amplifier.
• Be sure the unit is connected to a 12V DC power
■ Speaker Selection
supply with a negative ground connection.
• The rated input power of the speakers that are
• Do not open the top or bottom covers of the unit.
going to be connected should be greater than
• Do not install the unit in a spot exposed to direct
the maximum output power (in Watts) of the
sunlight or excessive heat or humidity. Also avoid
amplifier. Use of speakers having input power
places with too much dust or the possibility of water
ratings that are less than the output power of
splashing.
the amplifier will cause smoke to be emitted as
• When replacing a fuse, only use a new one with the
well as damage.
prescribed rating. Using a fuse with the wrong rating
• The impedance of the speakers that are going to
may cause your unit to malfunction.
be connected should be 2Ω or greater (for
• To prevent a short circuit when replacing a fuse, first
stereo connections), or 4Ω or greater (for
disconnect the wiring harness.
bridged connections). When more than one set
NOTE of speakers are going to be used, calculate the
combined impedance of the speakers and then
• If you experience problems during installation,
consult your Kenwood dealer. connect suitable speakers to the amplifier.
• If the unit does not seem to be working right, consult
your Kenwood dealer.
4Ω
■ Cleaning the unit
4Ω
If the front panel gets dirty, turn off the power and
8 Ω
2 Ω
wipe the panel with a dry silicon cloth or soft cloth.
2CAUTION
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.
KAC-6201
KAC-5201
POWER AMPLIFIER
INSTRUCTION MANUAL
放大器
使用說明書
© B64-2562-00/00 (MV)
■ Accessories
Installation procedure
Part name
1. Remove the ignition key and disconnect the
negative - terminal of the battery to prevent
Terminal cover
short circuits.
(Power terminal)
2. Set the unit according to the intended usage.
3. Connect the input and output cables of the Self-tapping screws
(ø4 × 16 mm)
units.
4. Connect the speaker wires.
5. Connect the power wire, power control wire
and grounding wire following this order.
Installation
6. Install the unit in the car.
7. Connect the negative - terminal of the battery.
Since the power amplifier has no parts which require
2WARNING
operation, it can be installed at a position away from
the driver's seat without any hindrances.
To prevent fire caused by a short in the wiring,
As generally accepted positions for its installation,
connect a fusible link or breaker nearby the
places such as inside the trunk, etc. can be
battery's positive terminal.
considered.
2CAUTION
2CAUTION
• Be sure to turn the power off before changing the
• Do not install the unit under the carpet. Otherwise
setting of any switch.
heat build-up occurs and the unit may be damaged.
• If the fuse blows, check wires for shorts, then
• Install this unit in a location which allows heat to
replace the fuse with one of the same rating.
easily dissipate. Once installed, do not place any
• Check that no unconnected cables or connectors
object on top of the unit.
are touching the car body. Do not remove caps from
• The surface temperature of the amplifier will
unconnected cables or connectors to prevent short
become hot during use. Install the amplifier in a
circuits.
• Connect the speaker wires to appropriate speaker place where people, resins, and other substances
that are sensitive to heat will not come into contact
connectors separately. Sharing the negative wire of
with it.
the speaker or grounding speaker wires to the metal
• When making a hole under a seat, inside the trunk,
body of the car can cause this unit to fail.
or somewhere else in the vehicle, check that there
• After installation, check that the brake lamps,
is nothing hazardous on the opposite side such as a
winkers, and wipers work properly.
gasoline tank, brake pipe, or wiring harness, and be
■ Speaker level input terminals (!)
careful not to cause scratches or other damage.
• The genuine-accessory car stereo shall have a
• Do not install near the dashboard, rear tray, or air
maximum power output of no more than 40 W.
bag safety parts.
• Do not connect the speaker output leads from
• The installation to the vehicle should securely fasten
a power amplifier (Optional) to the speaker
the unit to a place in which it will not obstruct
level input terminals of this unit, for this may
driving. If the unit comes off due to a shock and hits
cause malfunction or damage.
a person or safety part, it may cause injury or an
4Ω 4Ω
• Do not connect cables and leads to both RCA
accident.
cable input jacks and the speaker level input
• After installing the unit, check to make sure that
terminals simultaneously, for this may cause
electrical equipment such as the brake lamps, turn
malfunction or damage.
signal lamps and windshield wipers operate
• Connect the power control lead to a power
normally.
supply which can be turned ON/OFF by the
ignition key switch (ACC line). With this Self-tapping screw
(ø4 × 16 mm)
connection, shock noise may be generated
when the power of the genuine-accessory car
stereo is switched ON/OFF.
■ Power terminal (234)
Connect to their respective terminals the power
supply wire, and ground wire, all of which pass
through the associated terminal cover. Once the
connections are complete, place the cover on
the terminal section.
Installation board, etc.
(thickness : 15 mm or more)
Controls
KAC-6201
KAC-5201
1 234 5
Operations of the following control and switches
are required in accordance with the center unit
and speakers connected with this unit.
1 Fuse
25 A × 1 : KAC-6201
15 A × 1 : KAC-5201
NOTE
If you can't find the specified capacity fuse at your
store etc., consult your Kenwood dealer.
2 Battery terminal
3 Ground terminal
4 Power control (REMOTE) terminal
5 SPEAKER OUTPUT terminals
• Stereo Connections:
When you wish to use the unit as a stereo
amplifier, stereo connections are used.
• Bridged Connections:
When you wish to use the unit as a high-output
monaural amplifier, bridged connections are
used. (Make connections to the LEFT channel (+)
and the RIGHT channel (–) SPEAKER OUTPUT
terminals.)
System examples
■ 2-channel system
Left speaker
CENTER L L
UNIT
Right speaker
R R
KAC-5201 KAC-6201
7 8 7 8
FILTER OPERATION FILTER OPERATION
OFF LPF STEREO MONO(Lch) OFF L+R
HPF LPF STEREO MONO(Lch)
■ Subwoofer system
CENTER Left speaker
UNIT
Right speaker
External Number of
L L Subwoofer
View Items
R R
1
KAC-5201 KAC-6201
7 8
7 8
4
FILTER OPERATION FILTER OPERATION
OFF LPF STEREO MONO(Lch) OFF L+R
HPF LPF STEREO MONO(Lch)
■ 1-channel system
L
L L Left speaker
CENTER
R R
UNIT
R L L Right speaker
R R
KAC-5201 KAC-6201
7 8 7 8
FILTER OPERATION FILTER OPERATION
OFF LPF STEREO MONO(Lch) OFF L+R
HPF LPF STEREO MONO(Lch)
■ Tri-mode
L
High pass
C
CENTER L L
UNIT R R
C
KAC-5201 KAC-6201
8
7 7 8
FILTER OPERATION FILTER OPERATION
OFF LPF STEREO MONO(Lch) OFF L+R
HPF LPF STEREO MONO(Lch)
Principle of Tri-mode
Method of frequency band division using a coil
and capacitor ... in case of 6dB/oct. slope
Coil (L): Passes low frequencies and blocks
high frequencies. (Low pass)
Capacitor (C): Passes high frequencies and
blocks low frequencies. (High pass)
Example:
When it is required to set a crossover
frequency of 120 Hz using speakers with an
impedance of 4 ohms.
fc=Cut of Frequency (Hz)
R=Speaker Impedance (Ω)
9
KAC-5201
10
15
6 7 89 0 !
20
(W)
25W or greater
KAC-6201
6 7 89 0 !
6 RCA cable ground lead terminal • STEREO position
When using an RCA cable with a ground lead The amplifier can be used as a stereo amplifier.
attached, connect the ground lead to this terminal. • L+R position (KAC-6201 only)
2CAUTION The input left and right signals are combined
before being amplified. Use this position when
Do not use this terminal for power source
the unit is used for subwoofer speakers or the
grounding. This unit will be damaged if the power
L+R (monaural) sound is required.
source grounding wire is connected to this
• MONO (Lch) position
terminal.
Amplifies the signal input from the left side only.
7 FILTER switch
Set to this position and make bridged
These switches allow filtering of the speaker
connections to use as a high-power monaural
output signals.
amplifier. (The input right signal is not output.)
• HPF (High Pass Filter) position (KAC-
9 INPUT SENSITIVITY control
6201 only)
Set this control according to the pre-output level of
Only frequencies of 150 Hz or higher are output.
the center unit connected with this unit, or to the
(Frequencies below 150 Hz are cut.)
maximum power output of the genuine-accessory
• LPF (Low Pass Filter) position
car stereo.
Only frequencies of 80 Hz or lower are output.
Use the diagram on the right as a guide.
(Frequencies above 80 Hz are cut.)
NOTE
The Lch and Rch will be mixed before output
even if the operation switch is set to STEREO. For the pre-output level or the maximum power
output, refer to the "Specifications" in the
• OFF position
instruction manual of the center unit.
The original sound without filtering is output.
0 LINE IN terminal
8 OPERATION switch
This switch allows selection of the amplification
! Speaker level input terminals
method of input signals.
Connection
NOTE
For safe installation, read "Installation procedure" before starting work.
■ RCA cable connection
CENTER UNIT (Cassette receiver,
CD receiver, etc.)
RCA cable*
6
Power control wire*
■ Speaker stereo connection
4
Lead terminal*
5
T
RI GH
ID GE D
BR
FT
LE
Left speaker Right speaker
Crossover Frequency
0 dB
■ Power wire connection
Subwoofer
-3 dB
(L + R)
L C
Frequency
159000 159000
C= (µF) = = 331.25 µF
fc x R 120Hz x 4Ω 2
159 x R 159 x 4Ω
L= (mH) = = 5.3 mH
fc 120Hz
2CAUTION
• If you wish to bridge-connect a speaker, the
speaker impedance must be no less than 4
ohms. Connecting a speaker with an
impedance lower than 4 ohms may damage
the unit.
Battery wire*
• Be sure to connect capacitors to speakers to
which high frequencies will be passed.
Failure to do so will result in a drop of the
combined impedance with the subwoofer.
Protective Fuse*
• Ensure that the withstand voltage and
Battery
current ratings of the capacitors (C) and coils
(L) are sufficient.
0.5 0.3
1.0
MIN MAX
INPUT
SENSITIVITY(V)
KAC-6201 KAC-5201
Power indicator
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 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.
• 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.
*Commercially available parts
■ Speaker level input connection
Genuine-accessory car stereo (No
line output center unit etc.)
Speaker
Car fuse box
ACC
Battery
! T
P U
IN
L RI GH T
V E
L E
E R
K
E A
S P FT
LE
■ Speaker bridge connection
Lead terminal* 4
5 T
RI GH
D
ID GE
BR
LE FT
Subwoofer
3 4
Lead terminal*
Terminal cover
Power control wire*
Ground wire*