JL Audio JX250/1 - User Manual

Thank you for purchasing a JL Audio amplifier for
your automotive sound system.
Your amplifier has been designed and manufactured to exacting
standards in order to ensure years of musical enjoyment in your vehicle.
For maximum performance, we highly recommend that you have
your new amplifier installed by an authorized JL Audio dealer. Your
authorized dealer has the training, expertise and installation equipment
to ensure optimum performance from this product. Should you
decide to install the amplifier yourself, please take the time
to read this manual thoroughly so as to familiarize yourself
with its installation requirements and setup procedures.
If you have any questions regarding the instructions in this
manual or any aspect of your amplifier’s operation, please contact your
authorized JL Audio dealer for assistance. If you need further assistance,
please call our Technical Support Department
at (954) 443-1100 during business hours.
OWNER’S MANUAL
Monoblock Subwoofer Amplifiers

Summary

Safety and Identification

Protect Your Hearing

Emphasizes the importance of limiting exposure to high sound pressure levels to prevent hearing loss.

Installation Planning and Safety

Installation Applications

Details the intended use and electrical system compatibility for the amplifier.

Planning Your Installation

Safety and Installation Precautions

Common Installation Mistakes

Product Details and Installation Sequence

Typical Installation Sequence

Step-by-step guide covering power, signal, and speaker connections for installation.

Power Connections and Requirements

Power and Ground Wire Gauge

Fuse Requirements

Gain Adjustment and Signal Handling

Input Sensitivity Adjustment

How to match source unit output to amplifier input for clean output.

Speaker Output Connection

Important Output Warnings

Appendix A: Input Sensitivity Setting

Setup Equipment and Procedure

Appendix B: Product Specifications

JX250;1 Specifications

Technical data for the JX250/1 amplifier model.

JX500;1 Specifications

Technical data for the JX500/1 amplifier model.

JX1000;1 D Specifications

Technical data for the JX1000/1D amplifier model.

Appendix C: Troubleshooting

Troubleshooting: No Power or Fluctuating Output

Guides for diagnosing and fixing common power and output issues.

Troubleshooting: No Output

Limited Warranty Information

JL Audio JX250/1 Specifications

General

THD at Rated Power	<1%
Input Sensitivity	200 mV - 4V
Dimensions	10.4 x 8.5 x 2.4 inches
Signal-to-Noise Ratio	>95 dB
S/N Ratio	> 100 dB
Signal to Noise Ratio	> 100 dB
Damping Factor	>200
Input Voltage Range	200 mV - 4 V RMS