Kenwood KAC 9102D User Manual

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)  
ꢉꢉ  
ꢅꢆ  
ꢉꢆ  
ꢄꢆ  
ꢁꢆ  
ꢉꢅ  
ꢆꢂ  
ꢈꢆ  
ꢉꢁ  
ꢊꢂ  
ꢉꢂꢂ  
"//34 ,%6%, ꢇD"  
&2%15%.#9 ꢇ(Z  
KAC-9152D/8152D  
KAC-9102D/8102D  
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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%  
,).% /54  
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%  
,).% /54  
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.  
f
g
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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