JL Audio JX360/4 Owners Manual

OWNER’S MANUAL

360W 4-Channel, Full-Range Amplifier

Thank you for purchasing a JL Audio amplifier for

your automotive sound system.

Your amplifier has been designed and manufactured to exacting

standards in order to ensure years of musical enjoyment in your vehicle.

For maximum performance, we highly recommend that you have

your new amplifier installed by an authorized JL Audio dealer. Your

authorized dealer has the training, expertise and installation equipment

to ensure optimum performance from this product. Should you

decide to install the amplifier yourself, please take the time

to read this manual thoroughly so as to familiarize yourself

with its installation requirements and setup procedures.

If you have any questions regarding the instructions in this

manual or any aspect of your amplifier’s operation, please contact your

authorized JL Audio dealer for assistance. If you need further assistance,

please call our Technical Support Department

at [phone] during business hours.

!

PROTECT YOUR HEARING!

We value you as a long-term customer. For
that reason, we urge you to practice restraint in
the operation of this product so as not to damage
your hearing and that of others in your vehicle.
Studies have shown that continuous exposure to
high sound pressure levels can lead to permanent
(irreparable) hearing loss. This and all other
high-power amplifiers are capable of producing
such high sound pressure levels when connected

to a speaker system. Please limit your continuous

exposure to high volume levels.

While driving, operate your audio system in
a manner that still allows you to hear necessary
noises to operate your vehicle safely (horns,
sirens, etc.).

Chassis Ground

Connector

(pg. 5)

Power Status

Indicator

(pg. 11)

+12 V Power

Connector

(pg. 5)

+12 VDC Ground Remote

Protection Status

Indicator

(pg. 11)

Remote Turn-On

Input Mode

Selector

(pg. 7)

Connector

(pg. 6)

High-Level

Input Jack

(pg. 6,7)

CH 1 & CH 2

Preamp

Input Jacks

(pg. 6)

SERIAL NUMBER

In the event that your amplifier requires

service or is ever stolen, you will need to have

a record of the product’s serial number. Please

take the time to enter that number in the space
provided below. The serial number can be found
on the bottom panel of the amplifier and on the
amplifier packaging.

Serial Number:

CH 1 & CH 2

Speaker Outputs

(pg. 10)

CH. 1

(L)

CH 3 & CH 4

Preamp Input Jacks

(pg. 6)

Left & Right

Preamp Output Jacks

CH. 2

(R)

(pg. 9)

High-Level

Input Jack

(pg. 6,7)

CH 3 & CH 4

Speaker Outputs

(pg. 10)

BridgedBridged

CH. 3

(L)

CH. 4

(R)

INSTALLATION APPLICATIONS

This amplifier is designed for operation in
vehicles with 12 volt, negative-ground electrical
systems. Use of this product in vehicles with
positive ground and/or voltages other than 12V
may result in damage to the product and will void
the warra nty.

This product is not certified or approved for
use in aircraft.

Do not attempt to “ bridge” the outputs of this
amplifier with the outputs of a second amplifier,
including an identical one.

PLANNING YOUR INSTALLATION

It is important that you take the time to read
this manual and that you plan out your
installation carefully. The following are some
considerations that you must take into account
when planning your installation.

Cooling Efficiency Considerations:

The outer shell of your JL Audio amplifier is
designed to remove heat from the amplifier
circuitry. For optimum cooling performance, this
outer shell should be exposed to as large a volume
of air as possible. Enclosing the amplifier in a
small, poorly ventilated chamber can lead to
excessive heat build-up and degraded
performance. If an installation calls for an
enclosure around the amplifier, we recommend
that this enclosure be ventilated with the aid
of a fan. In normal applications, fan-cooling
is not necessary.

IMPORTANT!

Mounting the amplifier upside down is
strongly discouraged.

If mounting the amplifier under a seat,
make sure there is at least 1 inch (2.5 cm) of
space above the amplifier’s outer shell to permit
proper cooling.

Safety Considerations:

Your amplifier needs to be installed in a dry,
well-ventilated environment and in a manner
which does not interfere with your vehicle’s safety
equipment (air bags, seat belt systems, ABS brake
systems, etc.). You should also take the time to
securely mount the amplifier so that it does not
come loose in the event of a collision or a sudden
jolt to the vehicle.

Stupid Mistakes to Avoid

• Check before drilling any holes in your vehicle

to make sure that you will not be drilling
through a gas tank, brake line, wiring harness or
other vital vehicle system.

• Do not run system wiring outside or underneath

the vehicle. This is an extremely dangerous
practice which can result in severe damage to
your vehicle and person.

• Protect all system wires from sharp metal

edges and wear by carefully routing them,
tying them down and using grommets and
loom where appropriate.

• Do not mount the amplifier in the engine

compartment, under the vehicle, on the roof
or in any other area that will expose the
amplifier circuitry to the elements.

ENGLISH

Filter Mode

Selector

(pg. 8)

Filter

Frequency

Control

(pg. 8)

Sensitivity

Control

(pg. 8)

Filter Mode

Selector

(pg. 8)

Frequency

Filter

Control

(pg. 8)

Input

Sensitivity

Control

(pg. 8)

Input

2 JL Audio JX360/4 3

Remote

CH. 3

(L)

CH. 4

(R)

CH. 1

(L)

CH. 2

(R)

BridgedBridged

!

PRODUCT DESCRIPTION

The JL Audio JX360/4 is a four-channel,
full-range audio amplifier utilizing Class A/B
technology for all channels.

The JX360/4 can be operated with a wide
variety of source units and system configurations.
For detailed specifications, please refer to
Appendix B (page 13).

TYPICAL INSTALLATION SEQUENCE

The following represents the sequence
for a typical amplifier installation, using an
aftermarket source unit or OEM Interface
product. Additional steps and different
procedures may be required in some applications.
If you have any questions, please contact your
authorized JL Audio dealer for assistance.

1) Disconnect the negative battery post

connection and secure the disconnected cable
to prevent accidental re-connection during
installation. This step is not optional.

2) Run 4 AWG power wire from the battery

location to the amplifier mounting location,
taking care to route it in such a way that it
will not be damaged and will not interfere
with vehicle operation. Use 2 AWG or larger
power wire and a power distribution block if
additional amplifiers are being installed with
the JX360/4.

3) Connect power wire to the positive battery

post. Fuse the wire with an appropriate fuse
block (and connectors) within 18 inches (45
cm) wire length of the positive battery post.

This fuse is essential to protect the vehicle.
Do not install the fuse until the power wire
has been securely connected to the amplifier.

4) Run signal cables and remote turn-on wire

from the source unit to the final amplifier
mounting location.

5) Run speaker cables from the speaker systems

to the amplifier mounting location.

6) Find a good, solid metal grounding point

close to the amplifier and connect the
negative power wire to it using appropriate
hardware. Use the same size power wire as the
wire connected to the “+12VDC ” connection
(minimum 4 AWG), no longer than 36 inches
(90 cm) from the amplifier to the ground
connection point. In some vehicles, it may be
necessary to upgrade the battery ground wire.
(See page 5 for important notice).

7)

Securely mount the amplifier using
appropriate hardware.

8) Connect the positive and negative power

wires to the amplifier.

9) Connect the remote turn-on wire

to the amplifier.

10) Connect the input cables to the amplifier.

11) Connect the speaker cables to the amplifier.

12) Carefully review the amplifier’s control

settings to make sure that they are set
according to the needs of the system.

13) Install the power wire fuse (50A for a

single JX360/4) and reconnect the negative
battery post terminal.

14) Turn on the source unit at a low level

to double-check that the amplifier is
configured correctly. Resist the temptation
to crank it up until you have verified the
control settings.

15) Make necessary adjustments to the input

sensitivity controls to obtain the right
overall output and the desired balance
in the system. See Appendix A (page 12)
for the recommended input sensitivity
setting method.

16) Enjoy the fruits of your labor with your

favorite music.

POWER CONNECTIONS

Before installing the amplifier, disconnect the
negative (ground) wire from the vehicle’s battery.
This will prevent accidental damage to the system,
the vehicle and your body during installation.

+12 VDC Ground

The JX360/4’s “+12VDC” and “Ground”
connections are designed to accept 4 AWG power
wire. 4 AWG is a minimum power wire size for

this amplifier.

If you are installing the JX360/4 with other
amplifiers and wish to use a single main power
wire, use 2 AWG or larger main power wire
(depending on the overall current demands of all
the amplifiers in the system). This 2 AWG or
larger power wire should terminate into a fused
distribution block mounted as close to the
amplifiers as possible and should connect to the
JX360/4 with 4 AWG power wire.

Note: Smaller AWG numbers mean bigger wire
and vice-versa (1/0 AWG is the largest, 2 AWG is
smaller, then 4 AWG, then 8 AWG, etc.).

To connect the power and ground wires
to the amplifier, strip 1/2-inch (12 mm) of
insulation from each wire and insert the bare
wire into the the appropriate terminal block
positions on the JX360/4. Use the supplied

2.5 mm hex wrench to secure the wire via
the screw on the top of each terminal.

The “GROUND” connection should be made
using 4 AWG wire and should be kept as short
as possible, while accessing a solid piece of sheet

metal in the vehicle. The surface of the sheet
metal should be sanded at the contact point
to create a clean, metal-to-metal connection
between the chassis and the termination of the
ground wire. The use of a #10 sheet metal screw
and star washer to lock down the connection is
advisable. Alternatively, you can use a specialized
grounding lug, such as the JL Audio XB-MGLU.

Any wires run through metal barriers (such as
firewalls), must be protected with a high quality
insulating grommet to prevent damage to the
insulation of the wire. Failure to do so may result
in a dangerous short circuit.

IMPORTANT!

Many vehicles employ small (10 AWG -
6 AWG) wire to ground the battery to the
vehicle chassis and to connect the alternator’s
positive connection to the battery. To prevent
voltage drops, these wires should be upgraded
to 4 AWG when installing amplifier systems
with main fuse ratings above 60A.

FUSE REQUIREMENTS

An appropriate fuse at the main power wire(s)
to the amplifier(s) is vital for vehicle safety! This
fuse must be installed within 18 inches (45 cm)
of the positive battery post connection. If the
JX360/4 is the only device connected to this main
wire, use a 50A AGU or MAXI® fuse (no other
fuse is required in this situation).

When running multiple devices from one
main power wire, the main fuse value and rating
of the main power wire must be high enough
for all of the equipment being run from it. Use a
fused distribution block to split the main power
wire feed to each device, with appropriate fusing
and power wire for each device.

ENGLISH

4 JL Audio JX360/4 5

!

!

TURNON LEAD

+12 VDC

CH. 3

(L)

CH. 4

(R)

CH. 1

(L)

CH. 2

(R)

BridgedBridged

The JX360/4 is turned on and off

using a conventional +12V remote turn-

on lead, typically controlled by the
source unit’s remote turn-on output.

Ground Remote

The amplifier will turn on when +12V is

present at its “Remote” input and turn off when

+12V is switched off. If a source unit does not

have a dedicated remote turn-on output, the

amplifier’s turn-on lead can be connected to +12V

via a switch that derives power from an ignition­switched circuit.

18 AWG wire is more than adequate for the
remote turn-on connection. To connect the
remote turn-on wire to the amplifier, strip 1/2­inch (12 mm) of insulation from the wire and
insert it into the “Remote” receptacle on the
power connector. Tighten the connector down
using the supplied 2.5 mm hex wrench.

INPUT SECTIONS

The JX360/4’s has two input sections: one for
Channels 1&2 and another for Channels 3&4.
These input sections allows you to send signals to
the amplifier sections through the use of either
two or four inputs. Each input section offers
two input connection methods, one for high­level (speaker level) signals and one for low-level
(preamp level) signals.

1) Low-Level Inputs: A standard left/

right pair of RCA type jacks in the
“Low-Level Inputs” section is used for
preamp level (low-level) signal input
on the JX360/4. This is the preferred
connection method whenever available.

2) Hi-Level Inputs: If your system does not offer

a preamp level signal option, you can connect
speaker level signals directly to the “Hi-Level
Inputs” connectors using the supplied mating
connectors and wire harnesses. Simply splice
the appropriate left/right and positive/negative
wires to the included harnesses and plug the
harness into the “Hi-Level Inputs” connectors
on the amplifier. The JX360/4 will attenuate
the high-level signals to make them compatible
with its input stages.

IMPORTANT!

Make sure you observe correct polarity in
making the “Hi-Level Input” connections.
Failure to do so will reduce bass and affect
stereo imaging.

The connections for the “Hi-Level Inputs” plug wires
are as follows from left to right on the plug:

Channels 1&2 (FRONT)

White: Left Positive (+)

White/Black: Left Negative (–)
Black: Common Ground (rarely used)*

Gray: Right Positive (+)

Gray/Black: Right Negative (–)

Channels 3&4 (REAR or SUB)

Green: Left Positive (+)

Green/Black: Left Negative (–)
Black: Common Ground (rarely used)*

Purple: Right Positive (+)
Purple/Black: Right Negative (–)

*The only time you will use the Common Ground
connections is with some older (pre-1980’s) factory
systems or head units that ground their speakers to
chassis ground. To use these connections, ground
the black wires on the plugs to chassis ground and

only connect the Left and Right Positive plug wires

to the factory radio outputs.

“Input Mode” Switch

If you wish to send four discrete channels of
input into the JX360/4, simply use all four inputs
(Channels 1 & 2 and Channels 3 & 4) and set the
“Input Mode” switch to “4 Ch.”.

If you wish to feed all four channels by using

only two channels of input, set the “Input Mode”
switch to “2 Ch.” and use only the inputs to
Channels 1 & 2.

When Bridging the Amplifier:

If you are bridging the amplifier down
to two channels in a stereo application,
you must set the "Input Mode" switch to
the "4 Ch." position and feed the input of
each bridged channel pair individually.

For mono applications (where both bridged
channel pairs will reproduce the same signal), you
can select the "2 Ch." position and only feed the
Ch. 1 & 2 Inputs.

IMPORTANT!

Any bridged channel pair must be fed by both
Input Channels corresponding to it (Left and
Right). Failure to do so will result in significant
audible distortion.

See "Bridging Considerations" section on Page

10 for further information.

ENGLISH

6 JL Audio JX360/4 7

INPUT SENSITIVITY CONTROLS

!

The controls labeled “Input Sens.” located in

each channel pair's control section can be used
to match the source unit’s output voltage to the
input stage of each pair of amplifier channels
for maximum clean output. Rotating the control
clockwise will result in higher sensitivity (louder
for a given input voltage). Rotating the control
counter-clockwise will result in lower sensitivity
(quieter for a given input voltage.)

FILTER CONTROLS

The active filter built into each channel
section of the JX360/4 can be used to eliminate
potentially harmful and/or undesired frequencies
from making their way through the amplifier
sections to the speaker(s). This serves to improve
tonal balance and to avoid distortion and possible
speaker failure. Correct use of these filters can
substantially increase the longevity and fidelity
of your audio system.

“LP” (Low-Pass): Configures the filter to
attenuate frequencies above the selected filter
frequency at a rate of 12dB per octave. This is
useful for connection of subwoofer(s) to one
or both of the JX360/4’s channel pairs in a
bi-amplified system.

2) “Filter Freq. (Hz)” A simple rotary control

in each channel section adjusts the filter
cutoff frequency of the filter type you have
selected with the “Filter Mode” switch. This
control will have no effect if you have selected
the “Off” position for the “Filter Mode”).

Each filter in the JX360/4 is fully variable
between 50 Hz and 200 Hz. The "80"
Hz position is a good starting point for
tuning systems utilizing typical subwoofers
and component or coaxial speakers.

PREOUTS

The JX360/4 incorporates a pass-through

preamp output (Preouts) section, so that

additional amplifiers can be easily added to
the system. This pass-through pre-amp output
delivers a summed stereo signal, combining the

Ch 1 and 3 signals into a Left Preamp Output

Signal and the Ch. 2 and 4 signals into a Right

Channel Preamp Output signal. Only signals

applied to the Low-Level inputs are passed

through the Preouts. Input signals applied to

the High-Level inputs will not pass through the

Preouts.

ENGLISH

To properly set the amplifier for maximum

clean output, please refer to Appendix A (page

12) in this manual. After using this procedure,
you can then adjust any or all “Input Sens.”
levels downward if this is required to achieve the
desired system balance.

IMPORTANT!

Do not increase any “Input Sens.” setting for
any channel(s) of any amplifier in the system
beyond the maximum level established during
the procedure outlined in Appendix A (page

12). Doing so will result in audible distortion
and possible speaker damage.

8 JL Audio JX360/4 9

1) “Filter Mode” Control: The JX360/4 employs a

12dB per octave filter for each pair of channels
(one filter for channels 1&2 and another filter
for channels 3&4). Each of these filters can
be configured independently into one of two
filter types or defeated completely by way of the
three-position “Filter Mode” switches:

“HP” (High-Pass): Configures the filter to

attenuate frequencies below the selected filter

frequency at a rate of 12dB per octave. This is

useful for connection of component speakers

to one or both of the JX360/4’s channel pairs in

a bi-amplified system.

Of f”: Defeats the filter completely, allowing

the full range of frequencies present at the

inputs to feed the amplifier. This is useful

for systems utilizing outboard crossovers or

requiring full-range reproduction from one or

both of the JX360/4’s channel pairs.

The preamp output signal is not affected by
any crossover filter selected (if the input signal is
full-range, the preamp output will be full-range).

Note: The signal level of the “Preouts” is always
line-level (low voltage).

SPEAKER OUTPUTS

CH. 3

(L)

CH. 4

(R)

Bridged

!

!

!

The JX360/4’s speaker outputs are designed to

accept 16 AWG - 8 AWG wire.

Each pair of the JX360/4’s channels are
designed to deliver power into speaker loads equal
to or greater than 2 ohms per channel when using
a “stereo” configuration and speaker loads equal
to or greater than 4 ohms per bridged pair of
channels when using a “bridged” configuration.

Bridged

CH. 1

(L)

CH. 2

(R)

IMPORTANT!

Speaker loads below 2 ohms nominal per
channel are not recommended and will cause
the amplifier to enter a protection mode.

BRIDGING CONSIDERATIONS

Bridging is the practice of combining the
output of two amplifier channels to drive a single
load. When bridged, each channel produces
signals of equal magnitude, but opposite polarity.
The combined output of the two channels
provides twice the output voltage available from
a single channel. The JX360/4 has been designed
for bridging of its channel pairs without the need
for input inversion adaptors.

To bridge a pair of channels, use the
“Left +” and “Right –” speaker connectors only
(the “ Left –” and “Right +” remain unused).
When bridged, each channel will deliver
optimum power into a 4 ohm load.

IMPORTANT!

When a pair of JX360/4 channels are bridged,
they will deliver 180W x 1 into a 4 ohm load or
140W x 1 into an 8 ohm load. Operating a
pair of bridged channels into a load lower
than 4 ohms is not recommended and will
cause the amplifier to enter a protection mode.

IMPORTANT!

Any bridged channel pair must be fed by both
Input Channels corresponding to it (Left and
Right). Failure to do so will result in significant
audible distortion.

When a pair of the JX360/4’s channels are
operating in bridged mode, the output will be in
mono (only one channel). This mono channel
can contain right channel only information,
left channel only information or the sum of
the information from both the right and left
channels. In order to achieve one of these options,
configure the inputs to that pair of channels in
one of these two ways:

1) Left Channel Only or Right Channel Only

Information: If you wish to send a left-only

or right-only signal to a pair of the JX360/4’s
channels, use a “Y-Adaptor” to split the single
channel signal into both left and right RCA
inputs. This option is useful when using a
pair of the JX360/4’s channels to drive left
channel speakers only and the other pair of
the JX360/4’s channels to drive right channel
speakers only.

2) Left + Right Channel Information:

When bridged and fed by a stereo input, a pair
of the JX360/4’s channels will automatically
combine the left and right channels into a

summed mono (left + right) channel. This

option is useful when using a pair of the
JX360/4’s channels to drive a subwoofer system
or a summed mono center channel.

AMPLIFIER STATUS INDICATOR LIGHTS &
PROTECTION CIRCUITRY

There are two status indicator lights on the

control panel of the amplifier.

1) “Power” (Green): lights to indicate that the

amplifier is turned on and operating normally.
Located at the far left of the control panel.

2) “Protect” (Red): Indicates that the amplifier

protection circuitry has been activated
to prevent product failure due to thermal
overload, short-circuit or a dangerously
low impedance connected to the amplifier
outputs. Connecting the speaker outputs
to an impedance lower than 2 ohms stereo
(4 ohms bridged) will cause this protection
mode to activate. When this protection mode
is activated, the amplifier will shut down to
protect its circuitry. When the problem is
corrected, the amplifier will return to normal
operation and the “Protect” LED will shut off.

SERVICING YOUR AMPLIFIER

If your amplifier fails or malfunctions, please
return it to your authorized JL Audio dealer so
that it may be sent in to JL Audio for service.
There are no user serviceable parts or fuses inside
the amplifier. The unique nature of the circuitry
in the JL Audio amplifiers requires specifically
trained service personnel. Do not attempt
to service the amplifier yourself or through
unauthorized repair facilities. This will not only
void the warranty, but may result in the creation
of more problems within the amplifier.

If you have any questions about the installation
or setup of the amplifier not covered in this manual,
please contact your dealer or technical support.

JL Audio Technical Support:

[phone]

9:00 AM – 5:30 PM (Eastern Time Zone)

Monday - Friday

ENGLISH

10 JL Audio JX360/4 11

APPENDIX A:

!

Input Sensitivity Level Setting

Following the directions below will allow the
installer to adjust the input sensitivity of each
amplifier channel pair simply and easily in just a
few minutes using equipment which is commonly
available in installation bays.

Necessary Equipment

• Digital AC Voltmeter

• CD with a sine-wave test tone recorded at

0 dB reference level in the frequency range
to be amplified for that set of channels
(50 Hz for subwoofer channels, 1 kHz for a
midrange application). Do not use attenuated
test tones (-10 dB, -20 dB, etc.).

The Nine-Step Procedure

1) Disconnect the speakers from the

amplifier’s speaker output connectors (you need
only disconnect one wire on each output).

2) Turn off all processing (bass/treble, loudness,

EQ, etc.) on the source unit, processors (if used)
and amplifier. Set the source unit's fader control
to center position and its subwoofer level control
to 3/4 of maximum.

3) Turn the “Input Sens.” control all the

way down.

4) Set the source unit volume to 3/4 of full

volume. This will allow for reasonable gain
overlap with moderate clipping at full volume.

5) Using the chart on this page, determine the target

voltage for input sensitivity adjustment according
to the nominal impedance of the speaker system
connected to the amplifier outputs.

6) Verify that you have disconnected

the speakers before proceeding. Play

a track with an appropriate sine wave
(within the frequency range to be
amplified) at 3/4 source unit volume.

7) Connect the AC voltmeter to the speaker output

connectors of the amplifier. Make sure you test

the voltage at the correct connectors (+ and –).

8) Increase the “Input Sens.” control until the

target voltage is observed with the voltmeter.

9) Once you have adjusted the amplifier to

its maximum low-distortion output level,
reconnect the speaker(s) and listen to the
system. The “Input Sens.” controls can
now be adjusted downward if the amplifier
requires attenuation to achieve the desired
system balance.

IMPORTANT!

Do not increase any “Input Sens.” setting for
any amplifier channel or channel pair in the
system beyond the maximum level established
during this procedure. Doing so will result in
audible distortion and possible speaker damage.

It will be necessary to re-adjust the

“Input Sens.” for the affected channels if any
equalizer boost is activated after setting the
“Input Sens.” with this procedure. This applies
to any EQ boost circuit, including source unit
tone controls or EQ circuits. EQ cuts will not
require re-adjustment.

Nom.

Impedance

8

6

4

3

2

Target AC Voltage

Stereo Bridged

16.7 V 26.8 V

16.7 V 26.8 V

16.7 V 26.8 V

15.5 V not recommended

13.4 V not recommended

APPENDIX B:
JX360/4 Specifications

Amplifier Section:

Amplifier Topology: Class A/B
Power Supply : Unregulated PWM switching typ e
Frequency Response: 20 Hz - 20 kHz +0/-1 dB
Signal to Noise Ratio:

>100 dBA referred to highest rated power per ch.,

>80 dBA referred to 1W (20 Hz - 20 kHz Bandwidth)

Damping Factor: >60 @ 4 ohms per ch.
THD + Noise @ Rated Power: 1 %

Rated Continuous (RMS) Power @ 14.4V:

Stereo, all channels driven:

70W RMS x 4 @ 4 ohms

90W RMS x 4 @ 2 ohms
Bridged, all channels driven:

180W RMS x 2 @ 4 ohms

Rated Continuous (RMS) Power @ 12.5V:

Stereo, all channels driven:

55W RMS x 4 @ 4 ohms

80W RMS x 4 @ 2 ohms
Bridged, all channels driven:

160W RMS x 2 @ 4 ohms

Signal Processing:

Filter Type (for each channel pair): 12dB/octave High-

Pass or Low-Pass with continuously variable cutoff

frequenc y selec tion from 50 - 200 Hz. Defeatable.
Preamp Output: 2-Channel, unbuffered pass-through

with RCA-t ype jacks, summed from both input pairs.

Input Sections:

No. of Inputs:

Two Stereo Pairs with 2/4 Ch. Input Mode Switch

Low-Level Inputs: Single -ended with RCA jack inputs
Low-Level Input Range: 200mV - 4V RMS
High-Level Inputs: Single-ended with molded connector
High-Level Input Range: 2V - 10V RMS

Power Connections:

Recommended Fuse Value (Type): 50A (MAXI or AGU)
Minimum Copper Power/Ground Wire Gauge: 4 AWG

ENGLISH

Dimensions (LxWxH):

15.40" x 7.68" x 2.15" (391 mm x 195 mm x 55 mm)

Net Weight:

8.75 lbs. (3.97 kg)

Due to ongoing product development, all specifications are subject to
change without notice.

12 JL Audio JX360/4 13

APPENDIX C: TROUBLESHOOTING
“How do I properly set the input sensitivity on my amplifier”

Please refer to Appeaset the input sensitivity for maximum, low-

distortion output.

“My amplifier doesn’t turn on”

Check the fuse, not just visually, but with a continuity meter. It is

possible for a fuse to have poor internal connections that
cannot be found by visual inspection. It is best to take the
fuse out of the holder for testing. If no problem is found with
the fuse, inspect the fuse-holder.

Check the integrity of the connections made to each of the

“+12VDC”, “Ground”, and “Remote” terminals. Ensure
that no wire insulation is pinched by the terminal set screw
and that each connection is tight.

Check to make sure there is +12V at the “Remote” connection of the

amplifier. In some cases, the turn-on lead from the source unit
is insufficient to turn on multiple devices and the use of a relay
is required. To test for this problem, jump the “+12V DC” wire
to the “Remote” terminal to see if the amplifier turns on. If this
does not work, proceed to the next step.

“My amplifier’s output fluctuates when I tap on it or hit a bump”

Check the connections to the amplifier. Make sure that the

insulation for all wires has been stripped back far enough to
allow a good contact area inside the terminal block.

Check the input connectors to ensure that they all are making good

contact with the input jacks on the amplifier.

“My amplifier turns on, but there is no output”

Check the input signal using an AC voltmeter to measure the

voltage from the source unit while an appropriate test tone is
played through the source unit (disconnect the input cables
from the amplifier prior to this test). The frequency used
should be in the range that is to be amplified by the amplifier
(example: 50 Hz for a sub bass application or 1 kHz for a full
range / high-pass application). A steady, sufficient voltage
(between 0.2 and 8.0-volts) should be present at the output of
the signal cables.

Check the output of the amplifier. Using the procedure explained in

the previous check item (after plugging the input cables back
into the amplifier) test for output at the speaker outputs of
the amplifier. Unless you enjoy test tones at high levels, it is
a good idea to remove the speaker wires from the amplifier
while doing this. Turn the volume up approximately half
way. 5V or more should be measured at the speaker outputs.
This output level can vary greatly between amplifiers but it
should not be in the millivolt range with the source unit at
half volume. If you are reading sufficient voltage, check your
speaker connections as explained below.

Check to ensure that the speaker wires are making a good

connection with the metal inside the terminal block. The
speaker wire connectors are designed to accept up to 8 AWG
wire. Make sure to strip the wire to allow for a sufficient
connection with the metal inside the terminal block.

ENGLISH

14 JL Audio JX360/4 15

INSTALLATION NOTES:

Use this diagram to document your amplifier’s switch and control positions.

ENGLISH

16 JL Audio JX360/4 17

LIMITED WARRANTY  AMPLIFIERS USA

JL Audio warrants this product to be free of defects in materials and workmanship for a period of one
(1) year from the original date of purchase.

This warranty is not transferrable and applies only to the original purchaser from an authorized
JL Audio dealer. Should service be necessary under this warranty for any reason due to manufacturing
defect or malfunction, JL Audio will (at its discretion), repair or replace the defective product with new
or remanufactured product at no charge. Damage caused by the following is not covered under warranty:
accident, misuse, abuse, product modification or neglect, failure to follow installation instructions,
unauthorized repair attempts, misrepresentations by the seller. This warranty does not cover incidental
or consequential damages and does not cover the cost of removing or reinstalling the unit(s). Cosmetic
damage due to accident or normal wear and tear is not covered under warranty.

Warranty is void if the product’s serial number has been removed or defaced.

Any applicable implied warranties are limited in duration to the period of the express warranty as
provided herein beginning with the date of the original purchase at retail, and no warranties, whether
express or implied, shall apply to this product thereafter. Some states do not allow limitations on implied
warranties, therefore these exclusions may not apply to you. This warranty gives you specific legal rights,
and you may also have other rights which vary from state to state.

If you need service on your JL AUDIO product:

All warranty returns should be sent to JL Audio ’s Amplifier Service Facility freight-prepaid through
an authorized JL Audio dealer and must be accompanied by proof of purchase (a copy of the original
sales receipt). Direct returns from consumers or non-authorized dealers will be refused unless specifically
authorized by JL Audio with a valid return authorization number.

Warranty expiration on products returned without proof of purchase will be determined from the
manufacturing date code. Coverage may be invalidated as this date is previous to purchase date. Non­defective items received will be returned freight-collect. Customer is responsible for shipping charges and
insurance in sending the product to JL Audio. Freight damage on returns is not covered under warranty.

For Service Information in the U.S.A. please call

JL Audio Customer Service: [phone]

9:00 AM – 5:30 PM (Eastern Time Zone)

JL Audio, Inc

10369 North Commerce Pkwy.

Miramar, FL 33025

(do not send product for repair to this address)

International Warranties:

Products purchased outside the United States of America are covered only

by that country’s distributor and not by JL Audio, Inc.

MANUAL DEL PROPIETARIO

Amplificador de rango completo de 4 canales de 360W

Muchas gracias por adquirir un amplificador JL Audio para el sistema

deaudio de su automóvil.

El amplificador se ha diseñado y fabricado de acuerdo con normas

rigurosas a fin de asegurarle que disfrutará de la música en su vehículo

durante muchos años. Para un rendimiento óptimo, recomendamos que

su nuevo amplificador sea instalado por un concesionario autorizado

de JL Audio. El concesionario autorizado cuenta con la capacitación,

la pericia y los equipos de instalación necesarios para asegurar

elrendimiento óptimo de este producto. En el caso de que decida

instalar usted mismo el amplificador, lea atentamente este manual para

familiarizarse con los requisitos de la instalación y los procedimientos

deconfiguración.

Si tiene alguna duda relacionada con las instrucciones dadas en este

manual o con cualquier aspecto del funcionamiento del amplificador,

póngase en contacto con un concesionario autorizado de JL Audio para

solicitar asistencia. Si necesita más ayuda, llame a nuestro Departamento

de Soporte Técnico al [phone] en los EE.UU. durante horas

normales de oficina.

JX360/4-CH-07-2012

PROTEJA SU AUDICIÓN!

Lo valoramos como cliente a largo plazo. Por

ello, lo instamos a utilizar este producto con
cautela para no dañar su audición y la desus
acompañantes en el vehículo. Los estudios
realizados han demostrado que una exposición
continua a niveles de presión de sonido muy
altos puede provocar pérdida de audición
permanente (irreparable). Tanto este como otros
amplificadores de alta potencia pueden producir
niveles de presión de sonido muy elevados
cuando se conectan a un sistema de altavoces.
Lerecomendamos que limite la exposición
continua a niveles de volumen altos.

Mientras conduce, use su sistema de audio
de manera que le permita escuchar los ruidos
necesarios para conducir de manera segura
(bocinas, sirenas, etc.)

Conector a tierra

del chasis

Conector de

alimentación

Indicador de estado

de alimentación

(pág. 11)

Indicador de estado

de protección

(pág. 5)

Conector de

de +12V

(pág. 5)

+12 VDC Ground Remote

(pág. 11)

encendido

remoto

(pág. 6)

Selector del modo

de entrada

(pág. 7)

Conector

de entrada

de alto nivel

(pág. 6, 7)

Conectores
de entrada

de bajo nivel

de canal

1 y canal 2

(pág. 6)

NÚMERO DE SERIE

En el caso de que necesite reparar
suamplificador o si se lo roban, deberá tener
registrado el número de serie del producto.
No deje de anotar dicho número en el espacio
provisto a continuación. El número de serie
seencuentra en el panel inferior del amplificador
yen el embalaje del producto.

Número de serie:

Salidas de altavoces

de canal 1 y canal 2

(pág. 10)

Bridged

CH. 1

(L)

Conectores
de entrada

de bajo nivel

de canal 3

y canal 4

(pág. 6)

CH. 2

(R)

Conectores

de salida

de bajo nivel

izquierdo
y derecho

(pág. 9)

Salidas de altavoces

de canal 3 y canal 4

CH. 3

(L)

Conector

de entrada

de alto nivel

(pág. 6, 7)

(pág. 10)

Bridged

CH. 4

(R)

DÓNDE PUEDE INSTALARSE

Este amplificador se ha diseñado para
funcionar en vehículos con sistemas eléctricos
de12 V con toma a tierra negativa. Si se utiliza
este producto en vehículos con sistemas con
toma a tierra positiva y/o voltajes diferentes
de12V, pueden ocasionarse daños al producto
yseanulará la garantía.

Este producto no está certificado o aprobado
para el uso en aeronaves.

No intente realizar “conexiones puenteadas”
entre las salidas de este amplificador y las
deunsegundo amplificador, aunque sea
idénticoaloriginal.

PLANIFICACIÓN DE LA INSTALACIÓN

Es importante que dedique tiempo a leer
este manual y que planifique cuidadosamente
lainstalación. A continuación se indican algunas
consideraciones que debe tener en cuenta
alplanificar la instalación.

Consideraciones relativas a la eficiencia
deenfriamiento:

La carcasa externa de su amplificador JL Audio
se ha diseñado para eliminar el calor del circuito

del amplificador. Para lograr el rendimiento

de enfriamiento óptimo, la carcasa debe estar
expuesta al mayor volumen de aire posible.
Si el amplificador se coloca en una cámara
pequeña con escasa ventilación, seproducirá una
acumulación de calor excesiva y se degradará
el rendimiento. Si la instalación requiere
unespacio envuelto alrededor del amplificador,
recomendamos que este se ventile con la ayuda

de un ventilador. Para aplicaciones normales,

nose requiere enfriamiento con un ventilador.

IMPORTANTE

!

Se desalienta firmemente montar
elamplificador boca abajo.

Si se monta el amplificador debajo
deun asiento, asegúrese de que haya por
lomenos 2,5 cm (1 pulgada) por encima
de lacarcasa del amplificador para permitir
unenfriamiento adecuado.

Consideraciones relativas a la seguridad:

El amplificador se debe instalar en unlugar
seco y bien ventilado, y de manera que
nointerfiera con los equipos de seguridad del
vehículo (bolsas de aire, sistemas decinturones
de seguridad, sistemas de frenos ABS, etc.).
Debe dedicar tiempo a montar elamplificador
de manera segura a fin de que no se suelte
siseproduce un choque o el vehículo
daunsaltorepentino.

Errores sencillos que debe evitar

• Antes de perforar un agujero en el vehículo,

compruebe que no perforará el tanque
degasolina, la línea de frenos, el arnés de
cableado uotro sistema esencial del vehículo.

• No instale el cableado en el exterior o debajo

del vehículo. Es una práctica extremadamente
peligrosa que puede provocar daños graves
asuvehículo y a usted mismo.

• Proteja todos los cables del sistema de bordes

metálicos afilados y desgaste. A tal fin,
colóquelos cuidadosamente, amárrelos y use
ojales yorganizadores de cables donde sea
apropiado.

• No instale el amplificador en el compartimento

del motor, debajo del vehículo, sobre el techo
nien ninguna otra zona en la que el circuito del
amplificador esté expuesto a los elementos.

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Selector

Control

Selector

de modo

de ltro

(pág. 8)

Control

de frecuencia

de ltro

(pág. 8)

Control de

amplicación

de entrada

(pág. 8)

de modo

de ltro
(pág. 8)

de frecuencia

de ltro

(pág. 8)

Control de

amplicación

de entrada

(pág. 8)

2 JL Audio JX360/4 3

emote

CH. 3

(L)

CH. 4

(R)

CH. 1

(L)

CH. 2

(R)

BridgedBridged

DESCRIPCIÓN DEL PRODUCTO

El JL Audio JX360/4 es un amplificador
derango completo y de cuatro canales que utiliza
tecnología Clase A/B para todos los canales.

El JX360/4 puede funcionar con una amplia
variedad de unidades fuente y configuraciones

de sistema. Para conocer las especificaciones

detalladas, consulte el Apéndice B (página13).

SECUENCIA DE INSTALACIÓN TÍPICA

A continuación se representan los
pasos necesarios para la instalación típica
deunamplificador mediante el uso
deunreproductor de audio posventa o una
interfaz con equipo de fábrica. En algunos
casos, pueden requerirse pasos adicionales
yprocedimientos diferentes. Sitiene cualquier
duda, póngase en contacto con un concesionario
autorizado de JL Audio para solicitar asistencia.

1) Desconecte la conexión del polo negativo

de la batería y sujete el cable desconectado
para evitar una reconexión accidental
durante la instalación. Este paso

noesopcional.

2) Lleve el cable de alimentación calibre

4AWG desde la ubicación delabatería
hasta el lugar de montaje del
amplificador, con cuidado de colocar
el cable demanera que no se dañe
ointerfiera con elfuncionamiento del
vehículo. Sidesea instalar amplificadores
adicionales junto con el JX360/4, use
uncable dealimentación calibre 2 AWG
o más grueso yun bloque de distribución
dealimentación.

3) Conecte el cable de alimentación al polo

positivo de la batería. Interrumpa el cable
con un bloque de fusibles apropiado
(yconectores) a 45 cm (18 pulgadas) como
máximo del polo positivo de la batería.

Este fusible es esencial para proteger
el vehículo. No instale el fusible hasta
que elcable de alimentación se haya
conectado al amplificador.

4) Lleve los cables de señal y el cable

deencendido remoto desde la unidad
fuente hasta el lugar de montaje final del
amplificador.

5) Lleve los cables de los altavoces desde

el sistema de altavoces hasta el lugar
demontaje del amplificador.

6) Escoja un punto de toma a tierra de metal

sólido adecuado cercano al amplificador
yconecte el cable de alimentación negativo
aeste utilizando tornillería apropiada.
Use un cable de alimentación del mismo
calibre que el cable conectado a la conexión
“+12VDC” (mínimo, calibre 4 AWG),
de90cm (36 pulgadas) de largo como
máximo desde el amplificador hasta el punto
de toma a tierra. En algunos vehículos,
puede ser necesario aumentar el calibre del
cable a tierra de la batería. (Consulte el aviso
importante de la página 5.)

7) Monte el amplificador de manera segura

usando la tornillería adecuada.

8) Conecte los cables de alimentación positivo

y negativo al amplificador.

9) Conecte el cable de encendido remoto

alamplificador.

10) Conecte los cables de entrada

alamplificador.

11) Conecte los cables de los altavoces

alamplificador.

12) Revise con atención los ajustes de control

del amplificador para asegurarse de que
se hayan configurado de acuerdo con las
necesidades del sistema.

13) Instale el fusible del cable de alimentación

(50A para un único JX360/4) y vuelva
aconectar el terminal del polo negativo
delabatería.

14) Encienda la unidad fuente a un nivel

bajo para comprobar nuevamente que
el amplificador se haya configurado
correctamente. Resista la tentación desubir
el volumen al máximo hasta que haya
verificado los ajustes de control.

15) Haga los ajustes necesarios en los

controles de amplificación de entrada
para obtener lasalida general adecuada
yelbalance deseado en el sistema. Consulte
elApéndice A (página12) para el método
de configuración recomendado para
laamplificación de entrada.

16) Disfrute del trabajo realizado escuchando

sumúsica favorita.

CONEXIONES DE ALIMENTACIÓN

Antes de instalar el amplificador, desconecte
elcable negativo (tierra) de la batería del vehículo.
Esto servirá para evitar daños accidentales
alsistema, al vehículo y a usted mismo durante
lainstalación.

+12 VDC Ground R

Las conexiones “+12VDC” y “Ground”
(Atierra) del JX360/4 están diseñadas para aceptar
cables de alimentación calibre 4 AWG. Elcalibre

mínimo del cable de alimentación para este
amplificador escalibre 4 AWG.

Si instala el JX360/4 con otros amplificadores
ydesea usar un único cable de alimentación
principal, use un cable de alimentación principal
calibre 2 AWG o más grueso. Esto dependerá
de la demanda de corriente general de todos
los amplificadores del sistema. Este cable
dealimentación calibre 2 AWG o más grueso debe
terminar en un bloque de distribución situado
lomás cerca posible de los amplificadores ydebe
conectarse al JX360/4 con un cable de alimentación
calibre 4 AWG.

Nota: Cuanto menor es el número del AWG,
mayor es el calibre del cable y viceversa. (El cable
calibre 1/0AWG es el más grande, el calibre
2AWG esmáspequeño, después el calibre 4 AWG,
calibre8AWG, etc.)

Para conectar los cables de alimentación

ydetoma a tierra al amplificador, pele 12 mm
(0,5pulgada) de aislamiento de cada cable
e inserte el cable pelado en las posiciones
apropiadas del bloque de terminales del
JX360/4. Use la llave hexagonal de 2,5mm

provista para sujetar el cable con untornillo
en la parte superior de cada terminal.

La conexión“GROUND” (A tierra) debe

realizarse usando cable calibre 4 AWG y debe
ser lo más corta posible, con acceso a una chapa
metálica en el vehículo. La superficie delachapa
metálica debería pulirse en el punto decontacto
para crear una buena conexión entre metales
entre el chasis y la terminación del cable detoma
a tierra. Es aconsejable usar un tornillo para
chapa n.º 10 y una arandela en estrella para

asegurar la conexión. Puede utilizar, demanera

alternativa, un conector de toma a tierra
especializado como el XB-MGLU de JL Audio.

Se deben proteger todos los cables que atraviesen
barreras metálicas, como los cortafuegos, con una
goma de aislamiento de alta calidad a fin de evitar
daños al aislamiento del cable. En caso contrario,
podría producirse un cortocircuito peligroso.

IMPORTANTE

!

En muchos vehículos, se utilizan cables pequeños
(calibre 10AWG - calibre 6 AWG) para conectar
la batería a tierra en el chasis del vehículo y para
conectar el conector positivo del alternador
alabatería. Con el fin de evitar caídas de voltaje,
el calibre de estos cables se debe aumentar
acalibre 4 AWG cuando se instalan sistemas
deamplificadores con fusible principal de más
de60 A.

REQUISITOS DEL FUSIBLE

Es esencial usar un fusible apropiado en los cables
de alimentación principales a los amplificadores
para la seguridad del vehículo. Este fusible debe
instalarse a 45 cm (18 pulgadas) como máximo
de la conexión del polo positivo de la batería.
SielJX360/4 es el único dispositivo conectado
aeste cable principal, use un fusible AGU o MAXI®
de50A (no se requiere otro fusible en este caso).

Cuando se conectan varios dispositivos
auncable de alimentación principal, el valor del
fusible principal y la potencia nominal del cable
de alimentación principal deben tener capacidad
suficiente para todos los equipos instalados. Use
unbloque de distribución con fusibles para dividir
la potencia del cable de alimentación principal para

4 JL Audio JX360/4 5

Español