JBL GT-X424 User Manual

GT-X424
Owner’s Manual
GT-X424
amplifier
INSTALLATION WARNINGS AND TIPS
• Disconnect the negative (–) lead from your vehicle’s battery.
• At the installation site, locate and make a note of all fuel lines,
hydraulic brake lines, vacuum lines and electrical wiring. Use
extreme caution when cutting or drilling in and around these areas.
• Choose a safe mounting location away from moisture.
• Make sure there is sufficient air circulation at the mounting location
for the amplifier to cool itself.
• Mount the amplifier, using the supplied hardware.

JBL GT-X424 Specifications

Power

power output at 4 ohms	45W RMS x 2
power output at 2 ohms	75W RMS x 2
total max power	300W

Audio Performance

THD + N	0.05%
signal-to-noise ratio	101dBA
frequency response	10Hz – 100kHz

Input Specifications

maximum input signal	6V
maximum sensitivity	200mV

Summary

Installation Warnings and Tips

General Installation Precautions

Disconnect battery, locate vehicle lines, choose a safe mounting spot away from moisture, ensure air circulation, and use supplied hardware.

Speaker Output Connectors

Speaker Connection Types

Details on two-channel and bridged operation connections, including impedance requirements for each.

Fuse and Power Input

Fuse Replacement and Power Connections

Instructions for replacing the fuse and connecting the +12V, GND, and REM power inputs with wiring guidelines.

Input and Control Connections

RCA Inputs and Input Level Control

Connecting RCA outputs and setting the amplifier's input level to match the source unit's output.

Crossover Filter Selector

Options for selecting crossover filters: LP (SUB), FLAT, or HP for various speaker configurations.

Indicator LEDs

Power and Protect LED Indicators

Explanation of the Power ON LED and the Protect LED, detailing conditions that illuminate the Protect LED.

Control Adjustments

Setting Input Level

Procedure to adjust the input level control for optimal sound clarity without distortion.

Setting the Crossover

Guide for setting the crossover frequency and filter selector for different speaker types and system configurations.

Bass Boost Control

Details on using the Bass-Boost control for 6dB boost at 50Hz, with a caution against speaker damage.

Specifications