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Boston Acoustics GT-275 manual

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Table of contents for the manual

  • Page 1

    2- Channel Amplier O wners Manual GT -275 GT -2125 GT -2200 GT -2300[...]

  • Page 2

    T able Of Contents 2 2 T able of Contents Parts list 3 Specifications Connections 4 T op panel removal / installation Controls 5 Status LEDs Installation - General 6 Before you install Battery and charging system Wire routing Choose the mounting location Passenger & trunk compartment mounting Multi-Position Mounting Feet V ents Installation - W[...]

  • Page 3

    Par ts And Specifications 3 Included Hardware: GT -275 GT -2125 GT -2200 GT -2300 Installation Manual 1 1 1 1 Female Quick-Connect T erminal 1 1 1 1 (for remote turn-on input) 2mm Hex Wrench 1 1 1 1 3mm Hex Wrench 1 1 1 1 Mounting Screws 4 4 4 6 Parts List Specifications T echnical Specifications: GT -275 GT -2125 GT -2200 GT -2300 Rated Power (CEA[...]

  • Page 4

    G T -2300 GT -2200 GT -2125 GT -275 1 2 3 4 6 5 1 2 3 4 6 5 1 2 3 4 6 5 1 2 4 6 5 Connections 4 Connections u Stereo RCA Input v Remote T urn-On (female spade connector supplied) w Remote Gain Port (refer to GT -RSL manual for installation instruction) x Left/Right/Mono Speaker Outputs (12-gauge accepted) y 12v Power Input (4-gauge accepted) z Grou[...]

  • Page 5

    1 2 3 4 7 9 8 5 6 1 0 10 1 4 7 9 8 5 6 10 10 1 2 3 4 7 9 8 5 6 1 2 3 4 7 9 8 5 6 GT -2300 GT -2200 GT -2125 GT -275 Controls 5 Controls u Stereo/Mono Switch v Remote Gain OFF/ON Switch (ON when using GT -RSL) w Lowpass Slope Switch (12dB Stereo, 12dB Mono, or 24dB Mono) x Lowpass Crossover OFF/ON Switch (OFF/12dB/24dB on GT -275) y Lowpass Frequenc[...]

  • Page 6

    Installation - General 6 Installation - General W ARNING! 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 under the vehicle or where they could become broken or interfere with the safe operation o[...]

  • Page 7

    Installation - Wiring 7 Installation - Wiring Amplifier Fuses Although the amplifier has an internal fuse, additional fuse protection should be installed as close as possible to the battery on the positive (+) power wire going to the amplifier . An inline fuse should be installed at no more than 18" (46cm) on the positive (+) power wire. The r[...]

  • Page 8

    T uning - Front / Rear Speakers 8 T uning The Amplifier - Front or Rear Speakers 1) Music The material chosen for head unit/amplifier system setup must be both clear in recording quality and dynamic in amplitude. Many audiophile “test” discs have musical tracks with both of these characteristics and should be used. 2) Input Sensitivity Control [...]

  • Page 9

    T uning - Front / Rear Speakers 9 T uning The Amplifier - Front or Rear Speakers 6) Input Sensitivity Control Slowly rotate the control clockwise ( re f e r t o t h e d i ag r a m o n p a g e 5 ) until maximum undistorted playing level is heard from the speakers. Listen closely for bottoming from the speakers. If detected, rotate the input sensitiv[...]

  • Page 10

    T uning - Subwoofers 10 T uning The Amplifier - Subwoofer (s) 1) Input Switch Move switch to the right-hand (MONO) position (refer to the diagram on page 5); the inputs are summed to mono. Connect the subwoofer to the speaker output terminals marked for mono operation. NOTE: Subwoofer impedance is 2 ohms minimum. 2) Head Unit The head unit should h[...]

  • Page 11

    T uning - Subwoofers 11 T uning The Amplifier - Subwoofer (s) 5) Lowpass Crossover Control Move the selector switch to “ON” (refer to the diagram on page 5). In this setting, lowpass signal is sent to the speaker outputs. Experiment with the crossover point settings while the subwoofer is active. A higher setting will increase the perceived out[...]

  • Page 12

    Amplifier T roubleshooting Guide S tatus LEDs on Amplifier not Lit—Head Unit (Source) T urned “ON” V erify Remote turn-on wire from source to amplifier has proper voltage Power (B+) connections at amplifier , terminal blocks, and battery are secure Ground (GND) connections at amplifier and vehicle chassis are secure Battery B+ fuse and amplif[...]