JL Audio 1000/1v2 Output Polarity Switch, Status Indicator Lights Protection Circuitry

OUTPUT POLARITY SWITCH

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of the mid-bass speakers and the subwoofers in a system, it can be desirable to reverse the polarity of the subwoofer system in order to produce a better transition between subwoofer and mid-bass speaker output.

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to peform this polarity inversion without removing any wires. Simply flip the switch

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Experiment with this switch to determine which polarity produces the best overall bass performance in your system, listening in particular to the mid-bass smoothness and impact to make your determination.

Subwoofer Output

Output Polarity

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MONO OUTPUT ONLY

STATUS INDICATOR LIGHTS /

PROTECTION CIRCUITRY

There are three status indicator lights on the top of the amplifier. These are as follows:

1)

iPowerw (Green): lights to indicate that the amplifier is turned on and operating normally.

2)

iThermalw (Red): lights to indicate that the amplifier has exceeded its safe operating temperature, putting the amplifier into a self- protection mode, which reduces the power output of the amplifier. The red light will shut off and the amplifier will return to normal, full-power operating mode if the heat sink temperature drops back to a safe level.

3)iLow Ωw (Amber): lights to indicate that the impedance of the speaker load connected to the amplifier is lower than the optimum impedance load range for the amplifier. When this light is on, a protection circuit engages and reduces the power output of the amplifier. The amber indicator will also light when a short-circuit is detected in the speaker wiring (this can be a short between the positive and negative speaker wires or between either speaker wire and the vehicle chassis).

4)“Low V” (Blue): lights to indicate any dip in supply voltage below 8 volts. The

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dip duration to better alert the user to the problem. This will be accompanied by a shutdown of the amplifier (green LED will shut off) and a total loss of output.

Once the voltage rises above 9 volts, the amplifier will turn itself on. Because voltage dips occur in rapid succession, the typical behavior will be a cycling of the amplifier on and off, accompanied by flashing of the

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your system, you will need to investigate the cause of the voltage problem. This could be a bad ground on the amplifier, battery or alternator OR a faulty battery/charging system OR a problem with a fuse holder or wire connection.

If you are unsure as to the cause of the problem, please consult your JL Audio dealer or a qualified automotive electrical specialist.

Keep in mind that any large amplifier, like the 1000/1, places a very heavy demand on a vehicle’s charging system when operated at its limits.

Vehicles with weak charging systems may need to be serviced and/or upgraded to provide ample current to a system including a 1000/1.

There is only one condition that will shut down

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voltage drops below 10 volts, the entire amplifier

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on the top of the amplifier will turn off when this occurs. The amplifier will turn back on when voltage climbs back above 10 volts. This may happen in a rapid cycle when bass-heavy program material causes a weak charging system to dip below 10 volts momentarily. If this is happening in your system, have your charging system inspected to make sure it is working properly.

For information on troubleshooting this amplifier, refer to Appendix E (page 21).

SERVICING YOUR JL AUDIO AMPLIFIER

If your amplifier fails or malfunctions, please

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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

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to service the amplifier yourself or through

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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:

(954) 443-1100

9:00 AM – 5:30 PM (Eastern Time Zone)

Monday - Friday

12 JL Audio - 1000/1v2 Owner’s Manual 13