Boston Acoustics GT-40 manual Channel, High-Current/High-Power Ampliﬁer

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GT-40_manual 4/10/03 4:17 PM Page 1

GT-40

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Contents GT-40 Channel, High-Current/High-Power AmpliﬁerTable of Contents Features and Speciﬁcations Parts ListControl Functions Status LED Indicators Rear Input SwitchControl Rear RCA InputsMechanical Functions Ampliﬁer Linking Wire ConnectionFuses Before You Install General Installation PrecautionsBattery & Charging System Wire RoutingChoose the Mounting Location Installation-Ampliﬁer MountingWire Gauge Installation-Fuses & WiringPassenger & Trunk Compartment Mounting Ampliﬁer FusesRemote Input Connection Power/B+ & Power/GND ConnectionSpeaker Output Connection Setup Tuning-Full-range Speakers Head Unit VolumeFront Input Sensitivity Control Front Crossover ControlsSetup Tuning-Subwoofers Setup Tuning-Rear Fill SpeakersSubwoofer Level Control Rear Input Switch Front Q ControlRear Crossover Control Rear Input Sensitivity ControlSystem A-Full-range Front with Full-range Rear System ExamplesSystem B-Full-range Front with Rear Fill System D -Main Speakers with Parallel 4Ω Subwoofers 2Ω load System C-Main Speakers with Single Subwoofer 2ΩStatus LEDs on Ampliﬁer not Lit-Head Unit Source Turned on Ampliﬁer Troubleshooting GuideEngine Noise from Speakers Limited Warranty US Contact and Warranty InformationIf Service Seems Necessary