Boston Acoustics GTA-504, GTA-502 Connections / Controls, Connections and Controls, Status LED

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Connections and Controls

GTA-502

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GTA-802

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GTA-504

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Speaker Level Input

 

 

 

 

 

 

 

 

 

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RCA Input (Left and Right)

 

 

 

 

 

 

ω

Gain (250mv to 5.0v - continuously variable)

 

 

 

ξ

Crossover Frequency Adjustment (50Hz to 200Hz - continuously variable)

ψ

Q-TuneEqualization Boost (+6dB @ 45Hz)

 

 

 

ζ

Crosssover Filter Switch (HP / Off / LP)

 

 

 

 

{

GTA-RSL Port (Remote Gain)

 

 

 

 

 

Speaker Output Block (Left / Right) or (LF / RF / LR / RR on GTA-504)

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Status LED (Blue = Normal / Red = Fault Mode)

 

 

 

Fuse (Replace with same value only, refer to specifications on page 2)

 

Power Block (12v / Remote / Ground)

 

 

 

 

Status LED

The Boston Logo will illuminate “Blue” under normal operating conditions.

The LED will illuminate “Red” during start-up and under fault conditions. If the LED is still red after start-up, please refer to troubleshooting on page 12.

Speaker Level Input Cable

GTA amplifiers offer a dedicated speaker level input for ease installation into factory systems when an RCA (low level) signal is not available. Wiring code for the cable is industry standard;

White Solid = Left Positive

White w/ Black Stripe = Left Negative

Gray Solid = Right Positive

Gray w/ Black Stripe = Right Negative

Connections / Controls

Warning: Do not connect both Speaker Level and RCAs into the amplifier at the

same time as damage to the amplifier may occur.

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Contents GTA Introduction SpecificationsSpeaker Level Input Cable Connections / ControlsConnections and Controls Status LEDInstallation General Installation GeneralInstallation Wiring Installation WiringTuning The Amplifier Front and Rear Speakers Configuration and C GTA 2-Channel Amplifier Powering a PairTuning The Amplifier Front or Rear Speakers Onnection Diagram Full Range Speakers 80Hz Highpass Crossover ControlsTuneControl Tuning The Amplifier Subwoofers Tuning The Amplifier SubwoofersConfiguration and C GTA 2-Channel Amplifier PoweriGTA-RSL Control Onnection Diagram Ing a Subwoofer 80Hz Lowpass80Hz Highpass Front, 65Hz L Tuning The Amplifier GTA-504GTA-504 Amplifier Powering Both Tuning The Amplifier Front Speakers and SubwoofersOptional GTA-RSL Control Rear Crossover ControlStatus LEDs on Amplifier not Lit-Head Unit Source Turned on Amplifier Troubleshooting Guide

GTA-504, GTA-802, GTA-502 specifications

Boston Acoustics has long been synonymous with high-quality audio equipment, and their GTA series of amplifiers—the GTA-502, GTA-802, and GTA-504—showcase the brand’s commitment to delivering exceptional sound performance. Each model in the GTA series is designed to cater to different audio needs, while maintaining Boston Acoustics' hallmark of precision and clarity.

The Boston Acoustics GTA-502 is a two-channel amplifier that delivers a robust power output of 50 watts per channel at 4 ohms, making it an excellent choice for smaller audio systems or as part of a more extensive setup. One of its standout features is the Class AB amplification, which combines high efficiency with minimal distortion, allowing for dynamic sound reproduction. The GTA-502's compact size and lightweight construction make it an ideal option for those with limited space, while still providing rich, powerful audio that can fill a room.

Stepping up in power, the GTA-802 is a versatile 2-channel amplifier with an impressive output of 80 watts per channel at 4 ohms. This amplifier incorporates advanced thermal protection and short circuit protection technologies that ensure reliability and longevity. With its user-friendly interface, including precise gain controls and an LED indicator for monitoring performance, the GTA-802 is not only powerful but also easy to use. Its enhanced frequency response and low total harmonic distortion provide a clear and balanced audio experience, making it a popular choice among audiophiles.

The GTA-504 is the powerhouse of the series, featuring a 4-channel amplifier with 50 watts per channel at 4 ohms. This flexibility allows users to run multiple speakers or create a bi-amped system, optimizing sound performance. Like its counterparts, the GTA-504 benefits from Class AB amplification, which delivers a warm sound with detail and nuance that enriches any listening experience. The amplifier also includes a built-in crossover, making it suitable for both home theater setups and high-fidelity music systems. Its rugged construction signifies durability, ensuring that the unit stands up to the challenges of consistent use.

In conclusion, Boston Acoustics’ GTA series amplifiers—the GTA-502, GTA-802, and GTA-504—embody the brand's dedication to superior sound quality and innovative design. Each model offers its unique features and capabilities, catering to diverse audio needs while ensuring excellent performance, precision, and reliability. Whether you're an audiophile or a casual listener, the GTA series promises to enhance your audio journey with their rich, enveloping sound.