JL Audio HD600/4 User Manual

OWNER'S MANUAL
H:JBOO/4
4-Channel Class-D Full-Range Amplifier
Thank you for purchasing a IL 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 IL 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 IL Audio dealer for assistance. If you need further assistance,
please call the IL Audio Technical Support Department
at (954) 443-1100 during business hours.

JL Audio HD600/4 Specifications

General

Amplifier class	D
High pass filter	Yes
RMS output power (max)	600 W
Number of amplifier channels	4 channels
Product color	Black, Silver

Weight and Dimensions

Depth	211 mm
Width	273 mm
Height	49 mm

Summary

Protect Your Hearing

Planning Your Installation

General Safety Considerations

Installation Mistakes to Avoid

Typical Installation Sequence

Power and Turn-On Connections

+12V Battery and Ground Connections

Details connecting the positive battery terminal and chassis ground for proper operation.

Power Wire Requirements and Type

Specifies recommended wire gauges and pure copper material for power connections.

Fuse Requirements

Emphasizes the vital role of fuses for wire and vehicle protection against fire.

Vehicle Wiring Upgrade

Turn-On Wire Connection

Power Connector Plug Details

Live Wire Safety Warning

Drilling Safety Warning

Amplifier Inputs

Channel Control Sections Overview

Input Voltage Switch

Input Sensitivity Control

Crossover Controls

Filter Mode Selection

Filter Slope Selection

Filter Frequency Adjustment

Describes the 'Filter Freq.' control for setting the cutoff frequency for the filters.

Bi-Amplified Systems

Bi-Amp System with One HD600/4

Details configuring the HD600/4 to drive subwoofers (low-pass) and component speakers (high-pass).

Bi-Amp System with Separate Sub Amp

Preamp Outputs

Optional Remote Level Control

Speaker Outputs and R.I.P.S.

Load Impedance Warnings

Bridging Considerations

Status LED and Protection

Input Sensitivity Level Setting

Input Sensitivity Adjustment Warning

Nine-Step Input Sensitivity Procedure

Troubleshooting Common Issues

Input Sensitivity Setup and Basic Checks

Audio Output Problems

Addresses issues like distorted sound, attenuated output, and fluctuating performance due to connections or shorts.

Amplifier Shuts Off Intermittently

Amplifier Turns On With No Output