Boston Acoustics GT-20 GT-222 manual Power/B+ & Power/GND Connection, Remote Input Connection

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Installation—Fuses & Wiring (cont.)

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 (–) wire is installed into the terminal marked “GND”. The ground wire should be as short as possible and connected directly to the chassis of the vehicle. Make sure that the chassis connection point is free of rust, grease, dirt, paint, and other materials that may insulate the ground wire from making proper connection. Tighten the B+ and GND terminals with the supplied 3mm hex wrench to secure the wire into the terminals. If the power wire must be routed through a drilled or existing hole, use a nylon panel grom- met to prevent fraying the wire insulation. Failure to do so could lead to an electrical short if the wire insulation is worn through and the power wire is shorted to ground.

1/4"

Strip 5/8" (16mm)

Remote Input Connection

Use the supplied FEMALE quick-connector to connect the REMOTE trig- ger lead from the head unit to the amplifier. Crimp connector to wire from head unit that controls remote turn-on (refer to head unit owner’s manu- al). Once the quick-connector is crimped into place, carefully push con- nector onto recessed MALE REMOTE terminal adjacent to the RCA input pair. Only one (1) remote turn-on terminal should be connected.

Speaker Output Connection

Prepare each wire by stripping approximately 5/8" (16mm) of insulation. The positive (+) speaker wires are installed into the amplifier terminals marked “SPEAKER OUTPUT” / “+”. The negative (–) speaker wires are installed into the amplifier terminals marked “SPEAKER OUTPUT” / “-”. Tighten the “SPEAKER OUTPUT”, “+”, and “-” terminals with the supplied 2mm hex wrench to secure the wires into the terminals. If the speak- er wires must be routed through a drilled or existing hole, use a nylon panel grommet to prevent fraying the wire insulation. Failure to do so could lead to an electrical short if the wire insulation is worn through and the speaker wires are shorted to ground.

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Contents GT-20 GT-22 Channel, High-Current/High-Power AmplifiersTable of Contents Features and Specifications Parts ListControl Functions Control Status LED IndicatorsLowpass Crossover Controls Mechanical Functions Fuses Wire ConnectionAmplifier Linking Wire Routing General Installation PrecautionsBefore You Install Battery & Charging SystemChoose the Mounting Location Installation-Amplifier MountingAmplifier Fuses Installation-Fuses & WiringWire Gauge Passenger & Trunk Compartment MountingSpeaker Output Connection Power/B+ & Power/GND ConnectionRemote Input Connection Highpass & Lowpass Crossover Controls Setup Tuning-Full-range SpeakersMono Subwoofer Operation MusicCrossover Controls VolumeHead Unit Setup Tuning-Subwoofers Setup Tuning-Rear Fill SpeakersLowpass Crossover Control PhaseSystem B-Rear Fill Speakers System ExamplesSystem A-Full-range Front Speakers System D -Parallel 4Ω Subwoofers 2Ω load System C-Single Subwoofer 2ΩEngine Noise from Speakers Amplifier Troubleshooting GuideStatus LEDs on Amplifier not Lit-Head Unit Source Turned on If Service Seems Necessary Contact and Warranty InformationLimited Warranty US