JBL Official Manual for Home Theater System - GTS600 Overview and Features
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1. Introduction

Thanks for purchasing your new GT series automotive amplifier. The GT series amplifier you have chosen includes many unique features to enhance its perfor- mance and utility. The power amp- lifier circuitry is a fully discrete design notable for its low dis- tortion and unusually clean and clear sound quality. Your GT series amplifier will easily connect to virtually any car audio system, whether it is factory installed or one purchased separately.

In addition to conventional preamplevel inputs, this model features JBL’s Universal Interface design, which facilitates simple connection to factory radios with the low distortion that is usually only associated with preamp level connection. With Universal Inter- face, a factory radio can be used either as the main music source or combined with a CD player or changer, which includes volume control capability, simultaneously connected to the amplifier. By providing this two-unit direct connection, Universal Interface circuitry eliminates the need for an FM modulator to interface a CD player to factory radios, improving the fidelity of digital playback.

In addition, when using a high- powered (BTL) radio through the speaker-level inputs, Common Sense turn-on circuitry senses the common-mode voltage present on the radio’s speaker wires, turning the amplifier on without an additional “remote” wire.

Also, the built-in active crossover provides either full-range, high- pass or low-pass operation. This lets your GT series amplifier power

either subwoofer or component speakers in a bi-amplified system, or conventional full-range speakers in simpler systems.

The GTS300 and 600 also include preamp-level outputs which can provide either full-range, high-pass or low-pass signal to drive additional amplifiers. This lets you build systems of virtually any design without requiring a separate electronic crossover.

1.2 About Installation

Although the GTS300 and GTS600 are designed to make installation as easy as possible, they are sophisticated products that require proper installation to realize their full performance potential.

If you feel you do not have the necessary knowledge and skills we strongly recommend that the installation be done by your authorized JBL dealer.

If you choose to install the GTS300 or GTS600 yourself read all of the information in this manual before you start the installation. Pay particular attention to the safety precautions and notes.

2. Installation and Use

Refer to the “Crossover Frequency Adjustments” and “Speaker Level Input Impedance Adjustments” sections of this manual to see if you will need to make alterations to their factory settings. If you are not using the built-in crossover, or the speaker level inputs, you may skip this step.

1.Disconnect the negative cable from the battery. Note: If the vehicle’s radio features a code type security system, make certain you know the code

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Contents About Installation Installation and UseIntroduction Controls and Connectors Before disconnecting the battery40A Wiring System Design Using the GTS300 or GTS600Signal Sources Speaker RequirementsCassette/CD Tuner CD Player Or Changer Speaker-Level Input Impedance Adjustments Internal AdjustmentsCrossover Frequency Adjustments Resistor 2,500,000 Custom Chip ConstructionCrossover 2,500,000 Frequency = Crossover Adjusting the Gain Input Gain AdjustmentTypical Applications Stereo Full-Range or Subwoofer Operation ApplicationPreamp Output Capability Bi-amplified, System UsingCase of Difficulty Page Specifications Page Harman International Company

GTS600, GTS300 specifications

JBL has long been a leader in the audio industry, and the introduction of the GTS300 and GTS600 speakers reinforces their commitment to delivering exceptional sound quality. Both models embody the cutting-edge technology that JBL is known for while providing a range of features designed for both casual listeners and serious audiophiles.

The JBL GTS300 offers an impressive audio performance with its powerful drivers and advanced engineering. The speaker features a robust woofer that delivers deep, resonant bass, ensuring that music enthusiasts feel every beat. The innovative design of the driver minimizes distortion, allowing for a clear and well-balanced sound across a wide frequency range. This model is also equipped with a high-frequency transducer that produces shimmering highs, making it perfect for various music genres, from classical to modern pop.

On the other hand, the JBL GTS600 takes sound quality to the next level. This model is engineered with larger drivers and an enhanced cabinet design, which contributes to its impressive soundstage. The GTS600 is designed with a focus on clarity and detail, ensuring that vocal performances and instrumentals are represented with precision. The speaker incorporates advanced sound dispersion technology, allowing for a wider listening area, which makes it ideal for larger spaces or gatherings.

Both the GTS300 and GTS600 feature JBL’s proprietary technology that enhances the listening experience. One of these key technologies is the implementation of digital signal processing (DSP), which optimizes sound output according to the acoustics of the environment. This offers listeners a tailored audio experience, irrespective of the room setup. Furthermore, the speakers are compatible with various audio inputs, ensuring easy connectivity to a range of devices, from smartphones to home theater systems.

In terms of aesthetics, the GTS series boasts a sleek and modern design that will complement any setting. The durable build and high-quality finish ensure that both models not only look good but are also built to last.

In conclusion, the JBL GTS300 and GTS600 speakers represent the pinnacle of audio innovation, delivering exceptional sound quality, a variety of modern features, and robust design. Whether for personal enjoyment or professional use, these speakers are a valuable addition to any audio setup, capturing the essence of accurate sound reproduction that JBL is renowned for.
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