JL Audio JX 360/4 Manual De Instrucciones página 4

turn-on lead
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.
+12 VDC 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 ignition-
switched 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 1/2-
inch (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.
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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 high-
level (speaker level) signals and one for low-level
(preamp level) signals.
1) Low-Level Inputs: A standard left/
Bridged
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
CH. 1 CH. 2 CH. 3
(L) (R) (L)
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.
!
I m p o r ta n t !
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 (+)
Bridged
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 (+)
CH. 4
(R)
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.".
JL Audio JX360/4
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.
!
I m p o r ta n t !
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.
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