Boston acoustics GT-4100 - Manuals

Page 2 - Table of Contents

T a b le O f C o n te n ts 2 2 Table of Contents Parts list 3 Specifications Connections 4 Top panel removal / installation Controls 5 Status LEDs Installation - General 6 Before you installBattery and charging systemWire routingMounting locationPassenger & trunk compartment mountingMulti-Positi...

Page 3 - Parts List; Technical Specifications:

P a rt s A n dS p e c if ic a ti o n s 3 Included Hardware: GT-475 GT-4100 Installation Manual 1 1 Female Quick-Connect Terminal 1 1 (for remote turn-on input) 2mm Hex Wrench 1 1 3mm Hex Wrench 1 1 Mounting Screws 4 6 Parts List Specifications Technical Specifications: GT-475 GT-4100 Rated Power (CE...

Page 4 - ti; Connections; Top Panel Removal / Installation

GT-475 GT-4100 1 3 2 2 4 6 5 8 7 1 3 2 2 4 6 5 8 7 C o n n e c ti o n s 4 Connections u Front RCA Input v Remote Turn-On (female spade connector supplied) w Rear RCA Input x Remote Gain Port (refer to GT-RSL manual for installation instruction) y Front Left/Right/Mono Speaker Outputs (12-gauge accep...

Page 5 - ls; Controls; Status LEDs

1 6 7 11 10 4 3 8 2 5 9 12 1 6 7 11 10 4 3 8 2 5 9 12 GT-475 GT-4100 C o n tr o ls 5 Controls u Signal Routing Switch (Sends Front RCA Signal to Rear Channels) v Front Channel Input Sensitivity (250mv to 8.0v - continuously variable) w Front Channel Highpass Frequency Adjustment (20Hz to 350Hz - var...

Page 6 - Installation - General

In s ta ll a ti o n - G e n e ra l 6 Installation - General WARNING! Before driving the amplifier mounting screws through any surface, be sure of what is behind that surface. Check for the gas tank, brake lines, and any vehicle wiring harness. Never run wires outside or underthe vehicle or where the...

Page 7 - Installation - Wiring; Amplifier Fuses; Remote Input Connection; Mono Subwoofer Operation

In s ta lla ti o n- Wir in g 7 Installation - Wiring Amplifier Fuses Although the amplifier has an internal fuse, additional fuse protection should be installed as close as possibleto the battery on the positive (+) power wire going to the amplifier. An inline fuse should be installed at nomore than...

Page 8 - Tuning The Amplifier - Front and Rear Speakers; ) Front Signal Routing Switch; -Channel Highpass Operation Switch Configuration Diagram

T u n in g - F ro n t a n d R e a r S p e a k e rs 8 Tuning The Amplifier - Front and Rear Speakers 1) Music The material chosen for system tuning must be both clear in recording quality and dynamic in amplitude. Manyaudiophile “test” discs have musical tracks with both of these characteristics and ...

Page 9 - in; ) Input Sensitivity Control; -Channel Operation Wiring Configuration Diagram

fuse T u n in g- F ro n t a n dR e a r S p e a k e rs 9 Tuning The Amplifier - Front and Rear Speakers 6) Input Sensitivity Control Starting with the front channels, slowly rotate the control clockwise (refer to the diagram on page 5) until maxi-mum undistorted playing level is heard from the speake...

Page 10 - ) Front Signal Routing Switch; Bridged Lowpass with Q-Tune

T u n in g - S u b w o o fe rs 10 Tuning The Amplifier - Front Speakers and Subwoofer (s) 1) Front Signal Routing Switch If using two sets of RCAs (independent front and rear RCAs), set the switch to DEDICATED FRONT AND REARINPUTS . If you are using one set of RCAs for both front and rear channels, ...

Page 11 - Channel Operation Wiring Configuration Diagram

fuse T u n in g- S u b w o o fe rs 11 Tuning The Amplifier - Front Speakers and Subwoofer (s) Highpass Crossover Control (Front Channel Only) Cont. Slowly rotate the input sensitivity control clockwise until maximum undistorted playing level is heard from thespeakers. Listen closely for bottoming fr...

Page 12 - Amplifier Troubleshooting Guide

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 chassis ...