JVC Car Amplifier KS AX3102 User Manual

For Customer Use:  
KS-AX3104  
Enter below the Model No. and Serial No. which  
are located on the top or bottom of the cabinet.  
Retain this information for future reference.  
KS-AX3102  
KS-AX3101D  
Model No.  
Serial No.  
POWER AMPLIFIER: INSTRUCTIONS  
УСИЛИТЕЛЬ МОЩНОСТИ: ИНСТРУКЦИИ ПО ЭКСПЛУАТАЦИИ  
LVT2205-001A  
[K/US]  
1110NYMMDWTKK  
EN, RU  
© 2011 Victor Company of Japan, Limited  
POWER SUPPLY  
ENGLISH  
Thank you for purchasing a JVC product.  
If you have any questions or require information regarding installation kits, consult your “JVC IN-  
CAR ENTERTAINMENT” or a company supplying the kits.  
KS-AX3104  
KS-AX3101D  
KS-AX3102  
* Not Supplied  
For safety....  
• Stop the car before performing any complicated operations.  
CAUTIONS AND NOTES  
Fuse*  
This unit is designed to operate on 12 V DC, NEGATIVE ground electrical systems.  
JVC recommends consulting a qualified technician for installation.  
• This unit uses BTL (Balanced Transformerless) amplifier circuitry, i.e., floating ground system,  
so comply with the following:  
To metallic body or chassis  
(To an accessory terminal)  
– Do not connect the “·” terminals of the speakers to each other.  
– Do not connect the “·” terminals of the speakers to the metal body or chassis.  
• Cover the unused leads with insulating tape to prevent them from short circuiting.  
• When an extension lead is used, it should be as thick and short as possible; connect it firmly  
with insulating tape.  
• Be sure to leave an appropriate space between the antenna (aerial) and the wires of this unit.  
• If the fuse blows, first make sure the wires aren’t touching to cause a short circuit then replace  
the old fuse with one with the same rating.  
Remote turn-on line  
JVC car receiver, etc.  
Ignition switch  
Car battery  
Caution  
To prevent short circuits while making connections, keep the battery’s negative terminal  
disconnected.  
• Do not let pebbles, sand or metallic objects get inside the unit.  
To keep the heat dissipation mechanism running effectively, wipe the accumulated dust off  
periodically.  
• Listening to the tape, radio, CD or digital audio player, etc. with the volume set at a high level  
for a long period of time will exhaust the battery, while the engine is turned off or while the  
engine is idling.  
• When using a power cord (purchased separately), be sure to place the fuse near the battery as  
shown.  
• Connect the lead wire (power cord) through which power is supplied directly to the battery’s  
ª” terminal only after all the other connections have been made.  
The proper lead wire connected to each POWER terminal is as follows.  
• + B and GND: AWG 8 to AWG 4 (The cross section is about 8 mm2 to 21 mm2.)  
• REM: AWG 18 to AWG 8 (The cross section is about 0.8 mm2 to 8 mm2.)  
• This unit becomes very hot. Be careful not to touch the unit not only when using but after using.  
DO NOT disassemble the unit since there are no user serviceable parts inside.  
a When you use JVC car receiver with a remote lead, connect to the REM terminal on this unit.  
b When you connect a unit without a remote lead, connect to the accessory circuit of the car  
which is activated by the ignition switch. In this case, noise may occur when the car receiver  
is turned on or off. To avoid this noise, do not turn on or off the car receiver itself. You can  
turn on or off the car receiver along with the on/off operation of the ignition switch.  
INSTALLATION  
The following illustration shows a typical installation. However, you should make adjustments  
corresponding to your specific car.  
• Mount this unit on a firm surface, such as in the  
Å Location of the unit  
trunk or under the front seat.  
TERMINAL CONNECTIONS  
When making terminal connections, properly fix each terminal with the provided screw by turning  
it as illustrated.  
• Since heat is generated in the unit, do not  
mount it near inflammable objects. In addition,  
mount it in an area that will not prevent the unit  
from dissipating the heat.  
• Do not mount the unit in the places subject to  
heat: near a radiator, in a glove compartment or  
• Use ring terminals (not provided) for secure connection.  
Notes  
Onto the trunk floor  
• Make sure the screw is fixed in place to prevent disconnections.  
• Avoid over-tightening as it may cause the damage to the screw or its  
head slot.  
in insulated areas such as under a car mat that  
Under the front seat  
will prevent the unit from dissipating heat.  
• When mounting the unit under the front seat,  
make sure that adjusting the seat position will  
not catch any wire of the unit.  
ı Install the unit  
Provided screw  
13  
φ 4 × 20 mm ( /16 in.)  
SPEAKER SYSTEMS  
Notes  
• Be sure not to connect the “·” terminals of the speakers to a common point.  
• If the same lead is used for both left/right or front/rear speaker wirings, this unit cannot be used.  
Always use the independent leads for each speaker. In this case, redo the wirings.  
• Use the speakers with an impedance of 2 Ω to 8 Ω (4 Ω to 8 Ω: when used in Bridge Mode).  
• Use the speakers which have sufficient capacity to the unit.  
• When mounting this unit, be sure to use the  
provided screws.  
• If any other screws are used, there is a risk of  
loosening the unit or damaging the parts under  
the car floor.  
• Before drilling holes in the trunk to install the  
unit, make sure that there is a sufficient space  
under the trunk so that you do not drill holes in  
the fuel tank, etc.  
The proper lead connected to each SPEAKER OUTPUT terminal is as follows.  
KS-AX3104/KS-AX3102: AWG 18 to AWG 12 (The cross section is about 0.8 mm2 to 3.3 mm2).  
KS-AX3101D: AWG 18 to AWG 8 (The cross section is about 0.8 mm2 to 8 mm2).  
Drilled hole  
SAFETY INSTRUCTIONS  
“SOME DOS AND DON’TS ON THE SAFE USE OF EQUIPMENT”  
This equipment has been designed and manufactured to meet international safety standards but, like any electrical  
equipment, care must be taken if you are to obtain the best results and safety is to be assured.  
Dear Customer,  
This apparatus is in conformance with the valid European directives and  
standards regarding electromagnetic compatibility and electrical safety.  
European representative of Victor Company of Japan, Limited is:  
JVC Technical Services Europe GmbH  
Postfach 10 05 04  
DO read the operating instructions before you attempt to use the equipment.  
DO ensure that all electrical connections (including the mains plug, extension leads and interconnections between  
pieces of equipment) are properly made and in accordance with the manufacturer’s instructions. Switch off and  
withdraw the mains plug when making or changing connections.  
DO consult your dealer if you are ever in doubt about the installation, operation or safety of your equipment.  
DO be careful with glass panels or doors on equipment.  
61145 Friedberg  
Germany  
Information for Users on Disposal of Old Equipment and Batteries  
[European Union only]  
DON’T continue to operate the equipment if you are in any doubt about it working normally, or if it is damaged in any  
way–switch off, withdraw the mains plug and consult your dealer.  
DON’T remove any fixed cover as this may expose dangerous voltages.  
DON’T leave equipment switched on when it is unattended unless it is specifically stated that it is designed for  
unattended operation or has a standby mode. Switch off using the switch on the equipment and make sure that your  
family know how to do this. Special arrangements may need to be made for infirm or handicapped people.  
DON’T use equipment such as personal stereos or radios so that you are distracted from the requirements of traffic  
safety. It is illegal to watch television whilst driving.  
These symbols indicate that the product and the battery with this symbol should  
not be disposed as general household waste at its end-of-life.  
If you wish to dispose of this product and the battery, please do so in accordance  
with applicable national legislation or other rules in your country and municipality.  
Products  
By disposing of this product correctly, you will help to conserve natural resources  
and will help prevent potential negative effects on the environment and human  
DON’T listen to headphones at high volume as such use can permanently damage your hearing.  
DON’T obstruct the ventilation of the equipment, for example with curtains or soft furnishings. Overheating will cause  
damage and shorten the life of the equipment.  
DON’T use makeshift stands and NEVER fix legs with wood screws–to ensure complete safety always fit the  
manufacturer’s approved stand or legs with the fixings provided according to the instructions.  
DON’T allow electrical equipment to be exposed to rain or moisture.  
health.  
Notice:  
The sign Pb below the symbol for batteries indicates that this battery contains lead.  
Battery  
ABOVE ALL  
— NEVER let anyone, especially children, push anything into holes, slots or any other opening in the case — this could  
result in a fatal electrical shock.  
— NEVER guess or take chances with electrical equipment of any kind–it is better to be safe than sorry!  
E43486-340B  
1
CONTROLS  
KS-AX3101D  
2-Subwoofer system (2 amplifiers)  
• Use the speakers with an impedance of 2 Ω to 8 Ω.  
• Incoming signals from INPUT jacks are emitted through the PRE OUT jacks.  
KS-AX3104  
Å
INPUT  
L/MONO  
JVC car receiver, etc.  
CROSSOVER  
HIGH INPUT  
HIGH INPUT  
CROSSOVER  
L/MONO  
OFF  
OFF  
LEVEL  
LEVEL  
LPF  
KS-AX3102  
LEVEL  
HPF  
LPF  
HPF  
POWER  
ı Speaker input connector.  
MIN  
MAX  
MIN  
MAX  
Connector lead  
To Receiver  
Line out (Rear)  
or  
Subwoofer out  
FRONT  
REAR  
=
=
=
a White "LEFT (+)"  
b Black "RECEIVER GND"  
c Gray "RIGHT (+)"  
Left (+) lead  
Chassis*1  
KS-AX3101D  
2
*
Right (+) lead  
PRE OUT INPUT  
HIGH INPUT  
L
L/MONO  
CROSSOVER  
OFF  
Subwoofer  
LEVEL BASS BOOST  
LPF  
R
LPF  
HPF  
R
POWER  
POWER  
MIN  
MAX  
MIN  
MAX  
MIN  
MAX  
50Hz  
200Hz  
PRE OUT INPUT  
HIGH INPUT  
L
L/MONO  
2
*
Å POWER indicator  
R
R
The green lamp lights while the unit is turned on.  
ı CROSSOVER filter switch  
OFF: Normally set to this position. The switch is preset to this position when the unit is  
shipped.  
Subwoofer  
2-Subwoofer system  
• Use the speakers with an impedance of 4 Ω to 8 Ω.  
LPF: Set to this position when you want to turn on the LPF (Low-Pass Filter) switch. The Low-  
Pass Filter transmits frequencies lower than 80 Hz.  
HPF: Set to this position when you want to turn on the HPF (High-Pass Filter) switch. The  
High-Pass Filter transmits frequencies higher than 150 Hz.  
Å
JVC car receiver, etc.  
Ç Input LEVEL controller  
ı Speaker input connector.  
The input level can be adjusted with this control when this unit is connected to other source  
equipment. Adjust the level while listening to the sound. This control is preset to MIN when  
the unit is shipped.  
Line out (Rear)  
or  
Connector lead  
To Receiver  
=
=
=
a White "LEFT (+)"  
b Black "RECEIVER GND"  
c Gray "RIGHT (+)"  
Left (+) lead  
Subwoofer out  
Î BASS BOOST controller  
Chassis*1  
2
*
Turning this boosts the 45 Hz frequency within the range of 0 dB to +18 dB. Adjust the level  
while listening to the sound. This controller is preset to MIN when the unit is shipped.  
Right (+) lead  
PRE OUT INPUT  
HIGH INPUT  
LPF (Low-Pass Filter) controller  
L
L/MONO  
Adjust the cutoff frequency (the Low-Pass Filter transmits frequencies lower than the cutoff  
frequency) within the range of 50 Hz to 200 Hz. Adjust the level while listening to the  
sound. This controller is preset to 50 Hz when the unit is shipped.  
R
R
Subwoofer  
Subwoofer  
5-speaker system plus subwoofer—5.1-channel (3 amplifiers)  
• Use the speakers with an impedance of 2 Ω to 8 Ω.  
• Be sure to connect the line output from the receiver to the left (L) jack on this unit.  
TROUBLESHOOTING  
The POWER indicator does not light.  
• Change the fuses if the current one is blown.  
• Connect the ground lead securely to a metal part of the car.  
• Turn on the equipment connected to this unit.  
• Confirm the battery voltage (11 V to 16 V).  
• Use a relay if your system employs too many amplifiers.  
• Leave the unit turned off to cool it down if it heats up abnormally.  
Line out (Front)  
2
*
Å
JVC amplifier, etc.  
(Purchased separately)  
JVC car receiver, etc.  
Subwoofer out  
2
*
Line out (Rear)  
Line out  
(Center)  
Front  
Speaker  
Rear  
Speaker  
No sound is heard.  
ı Speaker input connector.  
• Confirm the connections for the power supply (see "POWER SUPPLY" on page 1).  
• Connect the RCA pin cords to the INPUT jacks, or the speaker input connector to the HIGH  
INPUT terminal.  
• Confirm the speaker wirings and the position of the CROSSOVER filter switch (See “SPEAKER  
CONNECTIONS” on page 2).  
2
2
Connector lead  
To Receiver  
*
*
=
=
=
a White "LEFT (+)"  
b Black "RECEIVER GND"  
c Gray "RIGHT (+)"  
Left (+) lead  
Chassis*1  
PRE OUT INPUT  
HIGH INPUT  
L
L/MONO  
Left (+) lead  
R
R
Alternator noise is heard.  
• Keep the leads of the POWER terminals away from the RCA pin cords.  
• Keep the RCA pin cords away from other electrical cables in the car.  
• Connect the ground lead securely to a metal part of the car.  
• Make sure the speaker negative leads do not touch the car chassis.  
• Connect a bypass capacitor across the accessory switches (horn, fan, etc....).  
JVC amplifier, etc.  
(Purchased separately)  
Center Speaker  
Subwoofer  
Noise is made when you connect the unit to an AM (MW/LW) tuner.  
• Move all the leads of this unit away from the antenna (aerial) lead.  
SPECIFICATIONS  
KS-AX3104  
KS-AX3102  
KS-AX3101D  
Power Output  
• Normal Mode:  
60 W RMS × 4 channels at 4 Ω and 1% THD + N  
65 W RMS × 2 channels at 4 Ω and 1% THD + N  
250 W RMS × 1 channels at 4 Ω and 1% THD + N  
76 dBA (reference: 1 W into 4 Ω)  
76 dBA (reference: 1 W into 4 Ω)  
60 dBA (reference: 1 W into 4 Ω)  
Signal-to-Noise Ratio  
Power Output  
• Normal Mode:  
90 W RMS × 4 channels at 2 Ω and 1% THD + N  
150 W RMS × 2 channels at 4 Ω and 1% THD + N  
800 W (400 W × 2)  
90 W RMS × 2 channels at 2 Ω and 1% THD + N  
150 W RMS × 1 channels at 4 Ω and 1% THD + N  
400 W  
400 W RMS × 1 channels at 2 Ω and 1% THD + N  
• Bridge Mode:  
Maximum Power Output  
Load Impedance  
800 W  
• Normal Mode:  
4 Ω (2 Ω to 8 Ω allowance)  
4 Ω (4 Ω to 8 Ω allowance)  
5 Hz to 50,000 Hz ( +0 dB, –3 dB)  
2 V/21 kΩ (0.3 V to 6 V, variable)  
Less than 0.04% (at 1 kHz)  
DC 14.4 V (11 V to 16 V allowance)  
Negative ground  
4 Ω (2 Ω to 8 Ω allowance)  
4 Ω (4 Ω to 8 Ω allowance)  
5 Hz to 50,000 Hz ( +0 dB, –3 dB)  
2 V/21 kΩ (0.3 V to 6 V, variable)  
Less than 0.04% (at 1 kHz)  
DC 14.4 V (11 V to 16 V allowance)  
Negative ground  
4 Ω (2 Ω to 8 Ω allowance)  
• Bridge Mode:  
Frequency Response  
Input Sensitivity/Impedance  
Distortion  
20 Hz to 200 Hz ( +0 dB, –3 dB)  
2 V/40 kΩ (0.3 V to 6 V, variable)  
Less than 0.08% (at 100 Hz)  
DC 14.4 V (11 V to 16 V allowance)  
Negative ground  
Power Requirement  
Grounding system  
Dimensions (W×H×D)  
335 mm × 51 mm × 212 mm  
202 mm × 51 mm × 212 mm  
222 mm × 51 mm × 212 mm  
4
1
6
1
6
12  
1
6
(13- /16 in. × 2- /16 in. × 8- /16 in.)  
(8 in. × 2- /16 in. × 8- /16 in.)  
(8- /16 in. × 2- /16 in. × 8- /16 in.)  
Mass (approx.)  
Accessories  
2.43 kg (5.3 lbs)  
1.52 kg (3.4 lbs)  
1.83 kg (4.0 lbs)  
Speaker input connector 3P × 2  
Speaker input connector 3P × 1  
Speaker input connector 3P × 1  
Mounting Screw φ 4 × 20 mm (13/16 in.) × 4  
Mounting Screw φ 4 × 20 mm (13/16 in.) × 4  
Mounting Screw φ 4 × 20 mm (13/16 in.) × 4  
Design and specifications are subject to change without notice.  
3

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