JL Audio JX400/4D Manuel D'utilisation page 7

!
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 (+)
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 JX400/4D, simply use all four
inputs (Channels 1 & 2 and Channels 3 & 4) and
set the "Input Mode" switch to "4 Ch.".
JX400/4D
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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