JL Audio E1400D 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 and extended warranty
coverage, 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 the JL Audio Technical Support Department at
(954) 443-1100 during business hours (Eastern Time Zone).
JL AUDIO e1400D
monoblock subwoofer amplifier
owner’s manual

JL Audio E1400D Specifications

General

Brand	JL Audio
Model	E1400D
Category	Car Amplifier
Language	English

Summary

Installation Planning and Safety

Hearing Protection Warning

Advice on limiting exposure to high sound pressure levels to prevent permanent hearing loss.

Serial Number Record

Guidance on noting the serial number for service, warranty, or theft purposes.

Installation Planning and Precautions

Essential considerations for amplifier installation, including cooling, safety, and common errors.

Product Overview and Core Connections

Product Description

Overview of the JL Audio e1400D amplifier's features and intended use.

Typical Installation Steps

A step-by-step guide for installing the amplifier in a vehicle.

Power and Fuse Management

Instructions for connecting power wires and understanding fuse requirements for safe operation.

Amplifier Controls and Signal Input

Remote Turn-On and Input Signals

How to connect the remote turn-on lead and audio input signals (RCA/High Level).

Key Amplifier Adjustments

Details on Input Sensitivity, Filter Controls (Low-Pass), and Bass Boost functionality.

Outputs, Indicators, and Service

Pre-Out and Speaker Output Connections

Guidance on connecting speakers and using preamp outputs for additional amplifiers.

Status Indicator Lights Explained

Explanation of the Power and Protect indicator lights and their meanings.

Amplifier Service and Support

Procedures and contact details for obtaining service or repair for the amplifier.

Appendix A: Input Sensitivity Level Setting

Input Sensitivity Adjustment Procedure

A detailed, nine-step guide for setting the amplifier's input sensitivity for optimal output.

Appendix B: Frequency Selection Chart

A chart providing precise filter frequency settings based on panel markings.

Appendix C: Specifications and Troubleshooting

Technical Specifications

Comprehensive technical data for the JL Audio e1400D amplifier.

Troubleshooting Common Issues

Solutions for common problems like no output, distortion, or intermittent shutdowns.