Boston Mobile Audio GTA-400m User Manual

High performance monoblock amplifiers
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GTA
High Performance
Monoblock Amplifiers

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Summary of Contents for Boston Mobile Audio GTA-400m

  • Page 1 High Performance Monoblock Amplifiers...
  • Page 2: Technical Specifications

    GTA amplifiers are engineered to perform and built to last. These products represent the pinnacle of performance and innovation that Boston Acoustics is famous for. We hope you enjoy your amplifier and the road ahead. Technical Specifications: GTA-400m GTA-800m Rated Power (CEA-2006-A): @ 2-Ohm (Mono) 400 Watts x 1...
  • Page 3: Connections And Controls

    Connections and Controls GTA-400m GTA-800m Speaker Level Input RCA Input (Left and Right) Gain (250mv to 5.0v - continuously variable) Q-Tune ™ “Q” Adjustment (0.707 to 1.6 - cont. variable) Lowpass Crossover Adjustment (50Hz to 150Hz - cont. variable) Q-Tune ™...
  • Page 4: Installation - General

    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 under the vehicle or where they could become broken or interfere with the safe operation of the vehicle.
  • Page 5: Installation & Wiring

    Tighten the 12v and GND terminals with the supplied 4mm (3mm on GTA-400m) 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 grommet to prevent the insulation from fraying.
  • Page 6: Tuning The Amplifier - Subwoofer(S)

    If fault is detected, rotate input sensitivity control counterclockwise until fault is eliminated. At this point, the maximum undistorted subwoofer playing level has been defined. Configuration and C GTA-400m Amplifier Powering a Subwoofer...
  • Page 7 Tuning The Amplifier - Subwoofer(s) 4) Lowpass Crossover Control Experiment with the crossover point settings while the subwoofer is active. A higher setting will increase the perceived output, and a lower setting will make the bass response more omnidirectional. Since the Lowpass cannot be disengaged, set to 15Hz if using an outboard processor or electronic crossover on the headunit.
  • Page 8 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 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 amplifier fuse are OK B+ at battery and B+ at amplifier have proper voltage Status LEDs Lit, no Output from Speakers—Speakers in Normal Operating Condition...

This manual is also suitable for:

Gta-800m

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