Boston acoustics GT-40 - Manuals

Page 2 - Table of Contents

2 Table of Contents Parts List 3 Features and Specifications 3 Control Functions 4 Control functions (cont.) 5 Control functions (cont.) 6 Mechanical Functions 6 Control cover removal & reinstallation 6 Multi-position mounting feet 6 Mechanical functions (cont.) 7 Amplifier linking 7 Wire connec...

Page 3 - Included Hardware; Parts List

Included Hardware (1) owner’s manual (1) female quick-connect terminal for remote input (1) 2mm hex wrench (for speaker input) (1) 3mm hex wrench (for power input) (4) mounting screws 3 Parts List GT-40 Specifications 14.4VDC Power @ 4 Ohms 4x55W @ 2 Ohms 4x90W @ 4 Ohms (dual-mono) 2x190W @ 2 Ohms (...

Page 4 - Control Functions; FRONT RCA Inputs

4 Control Functions FRONT RCA Inputs RCA cables marked “FRONT” from head unit or from other line level deviceshould be connected here. Use both inputs (L & R) for stereo. FRONT Remote Input Use the supplied FEMALE quick connector to connect the REMOTE trigger leadfrom the head unit to the amplif...

Page 6 - Mechanical Functions; cover panel

6 Mechanical Functions Recessed RCA Inputs The input jacks are recessed into the body of the amplifier to provide clear-ance in tight mounting locations. Control Cover Removal & Reinstallation The cover panel is secured with two (2) captive coin-slotted screws. Coin-slottedscrews allow a coin ed...

Page 8 - General Installation Precautions

8 Before You Install Before you install the unit, disconnect the negative (–) battery cable in the engine compartment of the vehi-cle. Doing so will prevent damage to both the electrical system of the vehicle and the amplifier during installation. Wire Routing Do not run the power wire near any low-...

Page 9 - Choose the Mounting Location; Installation—Amplifier Mounting

9 13mm ( 1 / 2 ”) 57mm (2 1 / 2 ”) 225mm (8 7 / 8 ”) Choose the Mounting Location Plan your installation so that the amplifier is mounted where adequate ventilation is available. Never mount an amplifier in the engine compartment of a vehicle! WARNING! Before driving the mounting screws through any ...

Page 10 - Passenger & Trunk Compartment Mounting; Installation—Fuses & Wiring; Amplifier Fuses

10 Passenger & Trunk Compartment Mounting If the amplifier is mounted under a seat, be sure that the vents do not becomeblocked. Do not allow seat padding or other obstructive material to pressdown on the amplifier. All Boston GT amplifiers have top panel controls. If the amplifier is mountedund...

Page 11 - Remote Input Connection

Power/B+ & Power/GND Connection Strip approximately 5 / 8 " (16mm) of insulation. The positive (+) power wire is installed into the amplifier terminal marked “B+.” The negative (–) wireis installed into the terminal marked “GND.” The ground wire should beas short as possible and connected di...

Page 12 - Mono Subwoofer Operation; Setup Tuning—Full-range Speakers; FRONT crossover control

12 Mono Subwoofer Operation If the amplifier is to be bridged and used with a subwoofer connected to the REAR channels, use the“SPEAKER OUTPUT” terminals marked for mono use. WARNING! Subwoofer impedance must not fall below 2 ohms when in MONO mode. Installation—Fuses & Wiring (cont.) 1) Music T...

Page 14 - ) REAR Input Sensitivity & Crossover Controls; Setup Tuning—Rear Fill Speakers; ) SUBWOOFER LEVEL Control

14 8) FRONT “Q” Control Once the FRONT highpass crossover point has been determined, use theFRONT “Q” control to increase the bass information centered around thecrossover point. Setting the front “Q” control is done in conjunction with setting the levels onthe input sensitivity and highpass crossov...

Page 16 - System Examples; System A—Full-range Front with Full-range Rear

16 System Examples System A—Full-range Front with Full-range Rear 6 .5 L F 6 .5 L F fuse to + battery terminal to ground 6 .5 L F 6 .5 L F System B—Full-range Front with Rear Fill 6 .5 L F 6 .5 L F fuse to + battery terminal to ground 6 .5 L F 6 .5 L F GT-40_manual 4/10/03 4:17 PM Page 16

Page 18 - Amplifier Troubleshooting Guide

18 Amplifier Troubleshooting Guide Status LEDs on Amplifier not Lit — Head Unit (Source) Turned “ON” Verify Remote turn-on wire from source to amplifier has proper voltagePower (B+) connections at amplifier, terminal blocks, and battery are secureGround (GND) connections at amplifier and vehicle cha...

Page 19 - Contact and Warranty Information; If Service Seems Necessary

19 Contact and Warranty Information 300 Jubilee Drive Peabody, MA 01960 U.S.A. (978) 538-5000 Boston, Boston Acoustics, and the Boston logo areregistered trademarks of Boston Acoustics, Inc. © 2003 Boston Acoustics, Inc. All rights reserved.Specifications subject to change without notice. P/N 042-00...