JL Audio JX360 Bedienungsanleitung Seite 4

turn-on lead
The JX360/2 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.
6
Input sectIons
The JX360/2's has one pair of stereo
inputs.The input section 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/
right pair of RCA type jacks in the
"Amplifier Inputs" section is used for
preamp level (low-level) signal input
on the JX360/2. This is the preferred
connection method whenever available.
CH. 1
(L)
JL Audio
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 JX360/2 will attenuate
Bridged
the high-level signals to make them compatible
with its input stage.
! 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
CH. 2
(R)
stereo imaging.
The connections for the "Hi-Level Inputs" plug wires
are as follows from left to right on the plug:
Channel 1 (Left)
White: Left Positive (+)
White/Black: Left Negative (–)
Black: Common Ground (rarely used)*
Channel 2 (Right)
Gray: Right Positive (+)
Gray/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.
!
I m p o r ta n t !
When the amplifier is bridged, both the Left
and Right inputs must be fed with signal.
Failure to do so will result in significant
audible distortion.
See "Bridging Considerations" section on Page 10
for further information.
JX360/2
Input sensItIvItY control
The control labeled "Input Sens." can be used
to match the source unit's output voltage to the
input stage the amplifier 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.)
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 the "Input
Sens." level downward if this is required
to achieve the desired system balance.
! I m p o r ta n t !
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.
7