Speaker Output Connectors, Fuse, Factory Bolt

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GT-X424 CAR AUDIO POWER AMPLIFIER OWNER’S MANUAL

ASpeaker Output Connectors

•Connect the speakers to these terminals, observing proper polarity.

•Two-channel operation: Connect the left speaker to the L+ and L– terminals and the right speaker to the R+ and R– terminals.

•One-channel (bridged) operation: Connect the single speaker to the R+ and L– terminals.

•Minimum speaker impedance for two-channel operation is 2 ohms. Minimum speaker impedance for one-channel (bridged) operation is 4 ohms.

BFuse

•Replace only with the same type and rating.

CPower Input Connectors

•+12V: Connect to the positive terminal of the vehicle’s battery. 10 AWG wire is recommended. Install an appropriate fuse holder and fuse (15A minimum) within 18" (460mm) of the battery. Make sure the wire is not damaged or pinched during installation. Install protective grommets when routing wires through the firewall or other sheet metal.

•GND: Connect to the vehicle’s chassis. Refer to the picture below.

Factory Bolt

Ring Connector

Ground Wire

HCrossover-Frequency Control

•12dB/octave crossover, variable from 32Hz to 320Hz.

•See L for the adjustment procedure.

ICrossover-Filter Selector

•LP (SUB): Select for subwoofer(s).

•FLAT: Select for full-range speakers when no subwoofer will be used in the system.

•HP: Select for midrange speakers or full-range speakers when a subwoofer is used in the system.

JBass-Boost Control

•Provides 6dB of boost at 50Hz. Set the Bass- Boost control according to your preference, being careful not to apply enough boost to damage the speaker(s).

KSetting The Input Level

ATurn Input-Level control counterclockwise to 6V (minimum).

BWith a dynamic music track playing, turn the head unit’s volume control to the 3/4 position.

CTurn Input-Level control clockwise until the music is so loud that it no longer sounds clear (distortion is present in the output).

DTurn Input-Level control counterclockwise gradually, just until the music sounds clear once again.

EInput level is now adjusted correctly.

LSetting the Crossover

Note: Remove any paint Star Washer below ring connector.

•REM: Connect to the “Remote Out” lead from the source unit or to a source of switched 12V+ (ACC).

DInput Connectors (RCA)

•Connect to the RCA outputs from the source unit or signal processor.

EInput-Level Control

•Used to match the input level of the amplifier to the output level of the source unit.

•See K for the adjustment procedure.

FPower On LED

•Illuminated when the amplifier is on.

GProtect LED

ACrossover setting for 5" (130mm) or larger full- range speakers when no subwoofer is included in the system.

BCrossover setting for midrange and/or full-range speakers when a subwoofer is included in the system.

CCrossover setting for subwoofers.

Note: Acceptable frequency ranges are indicated in gray.

This product is designed for mobile applications and is not intended for connection to the mains.

A valid serial number is required for warranty coverage.

•Illuminated under any of the following fault conditions: battery over/under voltage, short circuit in speaker wires, amplifier is too hot, amplifier’s output circuit has failed (DC voltage is present in the amplifier’s output).

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GT-X424 specifications

The Harman GT-X424 is a premium loudspeaker that exemplifies Harman's commitment to quality audio engineering and innovation. Designed primarily for professional use, the GT-X424 is suitable for various applications, including live performances, DJ setups, and home audio systems. Its robust construction and impressive sound reproduction capabilities make it a go-to option for audio enthusiasts and professionals alike.

At the heart of the GT-X424 is its powerful two-way speaker configuration, which includes a 12-inch low-frequency woofer and a 1-inch high-frequency compression driver. This combination allows the speaker to deliver a well-balanced sound with deep, punchy bass and crisp, clear highs. The woofer employs a high-temperature voice coil and a sturdy cone, resulting in reduced distortion even at high output levels. The compression driver is designed to provide an extended high-frequency response, ensuring that vocals and instruments retain their clarity even in demanding environments.

One of the standout features of the Harman GT-X424 is its built-in advanced DSP (Digital Signal Processing) technology. This feature allows users to fine-tune the audio output to match different acoustic environments, making the speaker versatile for various settings. With the DSP, users can take advantage of adjustable equalization, crossover settings, and various pre-set modes, optimizing performance for specific applications, whether it's for a live show or a recording session.

Durability is another key characteristic of the GT-X424. The speaker is constructed using high-grade materials, including a rugged ABS enclosure that is both lightweight and resistant to the wear and tear of transport. The design also helps minimize unwanted resonances, providing clean sound reproduction. Additionally, the speaker features an integrated handle for easy portability, as well as multiple mounting options for flexible installation setups.

Furthermore, the GT-X424 is equipped with multiple connectivity options, including XLR/TRS combo inputs and outputs. This allows seamless integration with various audio sources, such as mixers, microphones, and instruments. The speaker also supports daisy-chaining, enabling users to link multiple speakers for larger sound setups.

In conclusion, the Harman GT-X424 stands out in the crowded field of professional loudspeakers due to its exceptional sound quality, advanced technologies, and robust design. Whether used for live performances or as part of a personal audio system, the GT-X424 is engineered to deliver an outstanding listening experience.