Boston GT-42 Specifications

4-Channel Amplier O wners ManualGT-475GT-4100

Tuning - Subwoofers10Tuning The Amplifier - Front Speakers and Subwoofer (s)1) Front Signal Routing SwitchIf using two sets of RCAs (independent front

fuseTuning - Subwoofers11Tuning The Amplifier - Front Speakers and Subwoofer (s)Highpass Crossover Control (Front Channel Only) Cont.Slowly rotate the

Amplifier Troubleshooting GuideStatus LEDs on Amplifier not Lit—Head Unit (Source) Turned “ON”Verify Remote turn-on wire from source to amplifier has

Table Of Contents22Table of ContentsParts list 3SpecificationsConnections 4Top panel removal / installationControls 5Status LEDsInstallation - General

Parts And Specifications3Included Hardware: GT-475 GT-4100Installation Manual 1 1Female Quick-Connect Terminal 1 1(for remote turn-on input)2mm Hex W

GT-475GT-41001 32 2 4 65 871 32 2 4 65 87Connections4Connectionsu Front RCA Inputv Remote Turn-On (female spade connector supplied)w Rear RCA Inputx R

16 7111043 82 5 91216 7111043 82 5 912GT-475GT-4100Controls5Controlsu Signal Routing Switch (Sends Front RCA Signal to Rear Channels)v Front Channel I

Installation - General6Installation - GeneralWARNING! Before driving the amplifier mounting screws through any surface, be sure of what is behind that

Installation - Wiring7Installation - WiringAmplifier FusesAlthough the amplifier has an internal fuse, additional fuse protection should be installed

Tuning - Front and Rear Speakers8Tuning The Amplifier - Front and Rear Speakers1) MusicThe material chosen for system tuning must be both clear in rec

fuseTuning - Front and Rear Speakers9Tuning The Amplifier - Front and Rear Speakers6) Input Sensitivity ControlStarting with the front channels, slowl