SUBWOOFER POWER AMPLIFIER
KAC-9152D
KAC-9102D
KAC-8152D
KAC-8102D
INSTRUCTION MANUAL
© B64-3010-00/00 (MV)
Installation
ꢀꢁꢂ MM
ꢀꢃꢂ MM
Accessories
Part name
External View Number of Items
Œꢄ
Self-tapping screws
(ø5 × 18 mm)
4
Terminal cover (Power terminal)
Speaker level input cable
Hexagon Wrench
1
1
1
KAC-9152D/8152D only
Part name
External View Number of Items
Remote cable
1
Remote controller
1
Mounting bracket
1
2
Self-tapping screws
(ø2.6 × 12 mm)
NOTE
Installation procedure
• The rear side cover is fixed and cannot be
removed.
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.
Hexagon socket
head cap screw
(M4 × 8 mm)
Front side cover
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.
Hexagon Wrench
5.Connect the power wire, power control wire and grounding wire following this
order.
6.Install the installation fittings in the unit.
7.Attach the unit.
8.Install the remote controller. (KAC-9152D/8152D only)
9.Connect the negative - terminal of the battery.
2CAUTION
• 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.
• 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.
• 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.
• After installing the unit, check to make sure that electrical equipment
such as the brake lamps, turn signal lamps and windshield wipers operate
normally.
Self-tapping screw
(ø5 × 18 mm)
Installation board, etc.
(thickness : 15 mm or more)
■ Remote controller (KAC-9152D/8152D only)
Mounting bracket
Remote controller
Self-tapping screw
(ø2.6 × 12 mm)
English 3
Connection
2WARNING
■ RCA cable or Speaker level input connection
To prevent fire caused by a short in the wiring,
connect a fusible link or breaker nearby the
battery’s positive terminal.
• RCA cable Connections
Power control wire
RCA cable*
2CAUTION
CENTER UNIT
(CD receiver, etc.)
• 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.
RCA cable ground terminal
Left input
'.$
• 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.
Right input
• Speaker level input Connections
Cable Color of the connector
Car fuse box
Genuine-accessory car
NOTE
9
·
9
·
White
stereo (No line output
center unit etc.)
Left
• 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.
White/Black
Gray
Gray/Black
ACC
Right
Battery
* Commercially available parts
■ Power wire and Speaker wire connection
Power control wire
Lead terminal*
Terminal cover
Battery wire*
Protective Fuse*
Subwoofer (L + R)
Battery
Ground wire*
■ Remote cable connection (KAC-9152D/8152D only)
2CAUTION
Remote cable
• Before connecting the remote controller
cables, always set the Bass boost level control
to "0dB".
Remote controller
4 English
Controls
Remote controller
(KAC-9152D/KAC-8152D only)
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0 LINE OUT terminal
NOTE
The signal that’s input from the line input terminal is output.
The control panel locates under the front side cover. Remove the cover to
access to its controls for adjustment. (See page 3)
! 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. (See page 2)
1 Fuse (KAC-9152D/9102D: 30 A × 2)
Fuse (KAC-8152D/8102D: 40 A × 1)
NOTE
@ BASS BOOST LEVEL control (KAC-9102D/8102D only)
If you can’t find the specified capacity fuse at your store etc., consult your
Kenwood dealer.
Sets the low frequency level to be compensated.
# LPF(Low-Pass Filter) FREQUENCY control
2 Battery terminal
This control adjusts the frequency band output from this unit.
3 Ground terminal
$ ISF (infrasonic filter) switch
4 Power control terminal
Ultralow frequencies that cannot be reproduced even by a subwoofer
speaker do not become sound but become unnecessary oscillations, which
affect the sound by causing distortion, etc. Setting this switch to "15 Hz" or
"25 Hz" cuts the frequencies below the respective frequency.
This improves the reproduction performance of the speakers by eliminating
unnecessary oscillations which will not become sound.
Controls the unit ON/OFF.
NOTE
Controls the unit power. Be sure to connect it with all the systems.
5 Speaker output terminals
• KAC-9152D
% PHASE switch
As this unit accepts speakers with a minimum impedance of 1 ohm,
connect speakers with 1-ohm or higher impedance to these terminals.
When this switch is set "180°" (Reverse) the speaker output phase is reversed.
^ INPUT SENSITIVITY control
• KAC-9102D/8152D/8102D
As this unit accepts speakers with a minimum impedance of 2 ohms,
connect speakers with 2-ohms or higher impedance to these terminals.
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.
2CAUTION
Use the diagram on the right as a guide.
The rated input of the speakers should be no less than the maximum output
of the amplifier. Otherwise malfunction may result.
NOTE
For the pre-output level or the maximum power output, refer to the
<Specifications> in the instruction manual of the center unit.
6 REMOTE terminal (KAC-9152D/8152D only)
Connects the Remote cable.
& BOOST LEVEL (Bass boost level) control (KAC-9152D/8152D
only)
NOTE
Sets the level by which the low frequency range should be boosted.
Use the Remote cable of the accessory.
* FREQUENCY (Bass boost frequency) control (KAC-9152D/
7 Speaker level input terminals
8152D only)
NOTE
Sets the center frequency around which the low frequency range should be
boosted.
• 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.
• 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.
• 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 RCA cable ground lead terminal
When using an RCA cable with a ground lead attached, connect the ground
lead to this terminal.
9 LINE IN terminal
English 5
Dual Mono Drive (Function of the KAC-9152D)
A Dual Mono Drive system is a system in which 2 monaural amplifiers are
both set to bridged mode to drive one subwoofer with a high-output signal.
f
Setting
ꢀ
1.If you use the connection as shown, set amplifier ¡ to the Forward phase
(PHASE: 0 º) and set amplifier ™ to the Reverse phase (PHASE: 180 º).
2.Set all other switches (except for the "PHASE" switch) of amplifiers ¡ and ™ to
the same position.
CENTER UNIT
,
2%-/4%
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Subwoofer
(2 Ω or higher)
ꢀ
Connection
,
1.Connect the 9 speaker wire to the 9 terminal of amplifier ¡. Also, connect
the · speaker wire to the 9 terminal of amplifier ™.
Remote controller
2%-/4%
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2.Connect between · terminals of amplifiers ¡ and ™.
3.The remote controller can be used just when connected to amplifier ¡. It can
be used for more fine control if also connected to amplifier ™.
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2CAUTION
• Always connect between · terminals of amplifiers ¡ and ™. If a cable is
incorrectly connected between 9 and · terminals of these amplifiers, the
amplifier protection circuit is turned on.
• Use a speaker having the 2Ω or higher impedance only.
• To protect the electrical system from a short-circuiting, be sure to remove the
· battery cable from the vehicle in advance.
• Fully insulate amplifier terminals and speaker terminals to avoid a high voltage
from peripherals.
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6 English
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 disconnected.
• Protection circuit may be activated.
• Volume is too high.
• Connect the input (or output) cables.
• 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.
(Blown fuse.)
• The speaker cord is shorted.
The output level is too small • The input sensitivity adjusting control is not set to the correct • Adjust the control correctly referring to <Controls>.
(or too large).
position.
The sound quality is bad.
(The sound is distorted.)
• The speakers wire are connected with wrong + /-polarity.
• A speaker wire is pinched by a screw in the car body.
• The switches may be set improperly.
• Connect them properly checking the + / - of the terminals
and wires well.
• Connect the speaker wire again so that it is not pinched by
anything.
• Set switches properly by referring to <Controls>.
• Connect the Remote Cable securely and correctly.
• Adjust the "BOOST LEVEL".
The Remote Controller does • The Remote Cable is disconnected.
not function.
• The "BOOST LEVEL" is set to "0dB".
Specifications
Specifications subject to change without notice.
Audio Section................................................................................................................. KAC-9152D/9102D KAC-8152D/8102D
Max Power Output......................................................................................................................................................................1800 W (KAC-9152D) 1100 W
Max Power Output......................................................................................................................................................................1700 W (KAC-9102D)
Rated Power Output (+B = 14.4 V)
(4 Ω) (20 Hz – 200 Hz, 0.5 % THD)...............................................................................................................................................500 W × 1 300 W × 1
(2 Ω) (100 Hz, 0.9 % THD)....................................................................................................................................900 W × 1 (KAC-9152D) 550 W × 1
(2 Ω) (100 Hz, 0.9 % THD)....................................................................................................................................850 W × 1 (KAC-9102D)
(1 Ω) (100 Hz, 1.0 % THD)....................................................................................................................................900 W × 1 (KAC-9152D)
—
Frequency Response (+0, –3 dB)........................................................................................................................................................5 Hz – 200 Hz 5 Hz – 200 Hz
Sensitivity (rated output) (MAX.) ...........................................................................................................................................................................0.2 V 0.2 V
Sensitivity (rated output) (MIN.) ............................................................................................................................................................................5.0 V 5.0 V
Input Impedance ......................................................................................................................................................................................................... 10 kΩ 10 kΩ
Signal to Noise Ratio............................................................................................................................................................................................... ≤96 dB ≤96 dB
Low Pass Filter Frequency (24 dB/oct.) ..........................................................................................................................50 – 200 Hz (variable) 50 – 200 Hz (variable)
Infrasonic Filter Frequency (18 dB/oct.)..................................................................................................................................................15 / 25 Hz 15 / 25 Hz
Phase Inverter.................................................................................................................................................................0° (Normal) / 180° (Reverse) 0° (Normal) / 180° (Reverse)
Bass Boost Circuit............................................................................................................................................................................0 – 18 dB (variable) 0 – 18 dB (variable)
Bass Boost Frequency.................................................................................................................................40 – 100 Hz (variable) (KAC-9152D) 40 – 100 Hz (variable) (KAC-8152D)
Bass Boost Frequency................................................................................................................................................................... 40 Hz (KAC-9102D) 40 Hz (KAC-8102D)
General ........................................................................................................................... KAC-9152D/9102D KAC-8152D/8102D
Operating Voltage ........................................................................................................................................................ 14.4 V (11 – 16 V allowable) 14.4 V (11 – 16 V allowable)
Current Consumption .................................................................................................................................................................................................. 60 A 40 A
Installation Size (W × H × D) ...................................................................................................................................................380 × 61 × 286 mm 380 × 61 × 286 mm
Weight ..................................................................................................................................................................................................5.8 kg (KAC-9152D) 5.6 kg (KAC-8152D)
Weight ..................................................................................................................................................................................................5.7 kg (KAC-9102D) 5.5 kg (KAC-8102D)
English 7
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