JL Audio J2360.2 Turn-On Lead, Input Sections, Channels 1&2 Front, Channels 3&4 Rear or SUB

Turn-On Lead

The J2-360.2 is turned on and off using a conventional +12V remote turn- on lead, typically controlled by the source unit’s remote turn-on output.

Ground Remote + ￿￿VDC

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 a Phillips screwdriver.

Input Sections

The J2-360.2’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 J2-360.2. This is the preferred connection method whenever available.

pAmplifier

ts Inputs

LEFT

m In

TRIGHT

2)High-Level Inputs: If your system does not offer a preamp level signal option, you can connect speaker level signals directly to the “High-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 “High-Level Inputs” connectors on the amplifier. The J2-360.2 will attenuate the high- level signals to make them compatible with its input stages.

High-Level Inputs

! IMPORTANT

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

The connections for the “High 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 Sensitivity Controls

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.)

min max Input Sens.

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.

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