Boston Acoustics GT-2125, GT-2300, GT-2200, GT-275 User Manual

2-Channel Amplier Owners Manual

GT-275
GT-2125
GT-2200
GT-2300

Table Of Contents

Introduction

Thank you for choosing Boston Acoustics and congratulations on your purchase of the
Boston GT Amplifier. If you own other Boston products, the outstanding audio performance
and ease-of-use of the GT Amplifier should come as no surprise. If you’re new to Boston,
welcome – we think you’ve made a great choice.

Table of Contents

Parts list 3
Specifications

Connections 4
Top panel removal / installation

Controls 5
Status LEDs

Installation - General 6

Before you install
Battery and charging system
Wire routing

Choose the mounting location
Passenger & trunk compartment mounting
Multi-Position Mounting Feet
Vents

Installation - Wiring 7

Amplifier fuses
Wire gauge
Power 12v and ground (GND) connection
Remote input connection
Speaker output connection
Mono subwoofer operation

Tuning The Amplifier - Front or Rear Speakers 8

Music
Input sensitivity control
Highpass and lowpass crossover controls
Head unit
Volume
2-channel highpass operation switch configuration diagram
Input sensitivity control
Crossover controls
“Q” control
2-channel operation wiring configuration diagram

Tuning The Amplifier - Subwoofers 10

Input switch
Head unit
Volume
Input sensitivity control
Bridged lowpass with Q-Tune
Lowpass crossover control
Highpass crossover control

GT-RSL
Bridged operation wiring configuration diagram

™

switch configuration diagram

Amplifier Troubleshooting Guide 12
Service Information

22

Parts List

Included Hardware: GT-275 GT-2125 GT-2200 GT-2300

Installation Manual 1 1 1 1

Female Quick-Connect Terminal 1 1 1 1

(for remote turn-on input)

2mm Hex Wrench 1 1 1 1

3mm Hex Wrench 1 1 1 1

Mounting Screws 4 4 4 6

Specifications

Technical Specifications: GT-275 GT-2125 GT-2200 GT-2300

Rated Power (CEA-2006-A):

@ 4-Ohm (Stereo): 75 Watts x 2 125 Watts x 2 200 Watts x 2 300 Watts x 2
@ 2-Ohm (Stereo) 120 Watts x 2 200 Watts x 2 350 Watts x 2 500 Watts x 2
@ 4-Ohm (Mono) 225 Watts x 1 400 Watts x 1 700 Watts x 1 1000 Watts x 1
@ 2-Ohm (Mono) 300 Watts x 1 600 Watts x 1 900 Watts x 1 1400 Watts x 1

Parts And Specifications

Rated Power (12v):

@ 4-Ohm (Stereo): 55 Watts x 2 95 Watts x 2 160 Watts x 2 260 Watts x 2
@ 2-Ohm (Mono) 230 Watts x 1 475 Watts x 1 750 Watts x 1 1175 Watts x 1

Frequency Response (-3dB): 10Hz–95kHz 10Hz–95kHz 10Hz–95kHz 10Hz–95kHz

Signal-to-Noise Ratio (A Weighted): >100dB >100dB >100dB >100dB

THD+N: 0.03 0.03 0.03 0.03

HighPass Crossover:

Frequency Range: 20Hz - 350Hz 20Hz - 350Hz 20Hz - 350Hz 20Hz - 350Hz
Slope (dB Per Octave): 12dB 12dB 12dB 12dB

LowPass Crossover:

Frequency Range: 50Hz - 350Hz 50Hz - 350Hz 50Hz - 350Hz 50Hz - 350Hz
Slope (dB Per Octave): 12dB or 24dB 12dB or 24db 12dB or 24db 12dB or 24db

Signal Voltage Input Range: 200mv - 8v 200mv - 8v 200mv - 8v 200mv - 8v

Fuse Amp Rating: 30 Amp 40 Amp 70 Amp 100 Amp

Dimensions:

Width: 8
Height: 2 3⁄8” (61mm) 23⁄8” (61mm) 23⁄8” (61mm) 23⁄8” (61mm)
Depth: 9” (229mm) 9” (229mm) 9” (229mm) 9” (229mm)

3

⁄4” (223mm) 13 1⁄4” (337mm) 18 3⁄4” (477mm) 22 1⁄4” (566mm)

3

G

T-2300

GT-2200

GT-2125 GT-275

1 2 3 4 65

1 2 3 4 65

1 2 3 4 65

1 2 4 65

Connections

Connections

u Stereo RCA Input
v Remote Turn-On (female spade connector supplied)
w Remote Gain Port (refer to GT-RSL manual for installation instruction)
x Left/Right/Mono Speaker Outputs (12-gauge accepted)
y 12v Power Input (4-gauge accepted)
z Ground Wire Input (4-gauge accepted)

Top Panel Removal / Installation

The cover panel is secured with two (2) 3mm screws. Once unscrewed, pull panel forward,
once clear of the corners of the end panels, it will lift off. Reverse to reinstall.

4