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Boston GTA 1000M Service Manual
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Boston GTA 1000M Service Manual

High performance monoblock amplifiers
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GTA
High Performance
Monoblock Ampli ers
Service Manual for new GTA1000M (redesign of GTA800M)

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Summary of Contents for Boston GTA 1000M

  • Page 1 High Performance Monoblock Ampli ers Service Manual for new GTA1000M (redesign of GTA800M)

  • Page 2: Technical Specifications

    Technical Specifications: GTA-500m GTA-1000m Rated Power (CEA-2006-A): @ 2-Ohm (Mono) 500 Watts x 1 1000 Watts x 1 @ 4-Ohm (Mono) 300 Watts x 1 600 Watts x 1 Impedance Stability: 2Ω 2Ω Frequency Response (-3dB): 10Hz–150Hz 10Hz–150Hz Signal-to-Noise Ratio: >90dB >90dB (A Weighted)
  • Page 3 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...
  • Page 4 GTA1000M Service Parts List (new items highlighted in yellow) BA P/N BA PART DESCRIPTION Vendor P/N GTA-800m GTA-1000m 111-001708 GTA800M HEAT SINK 262-41.1.GTA800M70 111-001710 END CAP LEFT 262-46.14.GTA50270 111-001711 END CAP RIGHT 262-46.14.GTA50271 111-001712 END CAP SCREW 019-31.13.1524R02000 111-001717 262-42.1.GTA800M70 BOTTOM COVER GTA800M 111-001733 BOTTOM COVER GTA1000M...
  • Page 6 R-ch VARIABLE LPF (50Hz ~ 150Hz) MAIN AMP INPUT SENSITIVITY Q-TURN (10 ~ 50Hz) Q TURN (10 50Hz) (200mV ~ 5V) (200mV ~ 5V) Q-Adj (0.7 ~ 1.6) 50 Hz 150Hz HIGH INPUT HIGH INPUT L-ch Block Diagram - GTA800M and GTA1000M...
  • Page 7 2200 2200 2200 2200 FDP030N06 FDP030N06 FDP030N06 FDP030N06 FDP030N06 FDP030N06 FDP030N06 FDP030N06 FDP030N06 FDP030N06 FDP030N06 FDP030N06 2200 2200 2200 2200 2200 2200 GTA1000M.SCH R5 change to 5.6K 11 . 7.19 C38 change to105p Add R105,R116 to 102p Add 104p at Q4 C and E between GTA1000M Add Ll4148 at Q3 C and R4 between MP-10D7-0080...