Boston Acoustics GTA-802, GTA-504, GTA-502 manual Specifications, Introduction

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Specifications

Introduction

Thank you for choosing Boston Acoustics and congratulations, you’ve made the right choice. You’re now equipped for the open road. Your high performance GTA amplifiers are engineered to perform and built to last. These products represent the pinnacle of performance and innovation that Boston Acoustics is famous for. We hope you enjoy your amplifier and the road ahead.

Technical Specifications:

 

GTA-502

GTA-802

GTA-504

Rated Power (CEA-2006-A):

 

 

 

@ 4-Ohm (Stereo):

50 Watts x 2

80 Watts x 2

50 Watts x 4

@ 2-Ohm (Stereo)

80 Watts x 2

130 Watts x 2

80 Watts x 4

@ 4-Ohm (Mono)

160 Watts x 1

260 Watts x 1

160 Watts x 2

Impedance Stability:

 

 

 

Stereo:

2Ω

2Ω

2Ω

Mono:

4Ω

4Ω

4Ω

Frequency Response (-3dB):

10Hz–50kHz

10Hz–50kHz

10Hz–50kHz

Signal-to-Noise Ratio:

>90dB

>90dB

>90dB

(A Weighted)

 

 

 

THD+N:

0.05

0.05

0.05

Highpass Crossover:

 

 

 

Frequency Range:

50Hz - 200Hz

50Hz - 200Hz

50Hz - 200Hz

Slope (dB Per Octave):

12dB

12dB

12dB

Lowpass Crossover:

 

 

 

Frequency Range:

50Hz - 200Hz

50Hz - 200Hz

50Hz - 200Hz

Slope (dB Per Octave):

12dB

12dB

12dB

Signal Voltage Input Range:

 

 

 

Low Level (RCA) Input:

200mv - 5v

200mv - 5v

200mv - 5v

Speaker Level Input:

400mv - 10v

400mv - 10v

400mv - 10v

Fuse Amp Rating (ATC):

20 Amp

30 Amp

2 x 25 Amp

Dimensions:

 

 

 

Width:

9 3⁄8” (238mm)

11 3⁄4” (298mm)

14 3⁄8” (358mm)

Height:

2 3⁄8” (60mm)

2 3⁄8” (60mm)

2 3⁄8” (60mm)

Depth:

8 3⁄8” (211mm)

8 3⁄8” (211mm)

8 3⁄8” (211mm)

Parts List:

 

GTA-502

GTA-802

GTA-504

Owners Manual:

x 1

x 1

x 1

3mm Hex Wrench:

x 1

x 1

x 1

2mm Hex Wrench:

n/a

n/a

x 1

Speaker Level Input Cable:

x 1

x 1

x 2

Mounting Screws:

x 4

x 4

x 4

Replacement Fuses (ATC):

x 1 (20 amp)

x 1 (30 amp)

x 2 (25 amp)

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Contents GTA Specifications IntroductionStatus LED Connections / ControlsConnections and Controls Speaker Level Input CableInstallation General Installation GeneralInstallation Wiring Installation WiringTuning The Amplifier Front or Rear Speakers Tuning The Amplifier Front and Rear SpeakersConfiguration and C GTA 2-Channel Amplifier Powering a Pair TuneControl Onnection Diagram Full Range Speakers 80Hz HighpassCrossover Controls GTA 2-Channel Amplifier Poweri Tuning The Amplifier SubwoofersConfiguration and C Tuning The Amplifier SubwoofersOnnection Diagram Ing a Subwoofer 80Hz Lowpass GTA-RSL ControlTuning The Amplifier Front Speakers and Subwoofers Tuning The Amplifier GTA-504GTA-504 Amplifier Powering Both 80Hz Highpass Front, 65Hz LRear Crossover Control Optional GTA-RSL ControlAmplifier Troubleshooting Guide Status LEDs on Amplifier not Lit-Head Unit Source Turned on

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.
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