Boston GTA 1000M User manual
High Performance
Monoblock Ampliers
GTA
Service Manual for new GTA1000M (redesign of GTA800M)
Specifications
2
Introduction
Thank you for choosing Boston Acoustics and congratulations, you’ve
made the right choice. You’re now equipped for the open road. Your high
performance 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-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: 2Ω2Ω
Frequency Response (-3dB): 10Hz–150Hz 10Hz–150Hz
Signal-to-Noise Ratio: >90dB >90dB
(A Weighted)
THD+N: 1% 1%
Lowpass Crossover:
Frequency Range: 50Hz - 150Hz 50Hz - 150Hz
Slope (dB Per Octave): 12dB 12dB
Subsonic Filter (Highpass):
Frequency Range: 10Hz - 50Hz 10Hz - 50Hz
Slope (dB Per Octave): 12dB 12dB
Signal Voltage Input Range:
Low Level (RCA) Input: 200mv - 5v 200mv - 5v
Speaker Level Input: 400mv - 10v 400mv - 10v
Fuse Amp Rating (ATC): 2 x 25 Amp 3 x 35 Amp
Dimensions:
Width: 10
5
⁄
8
”(268mm) 12
1
⁄
2
”(318mm)
Height: 2
3
⁄
8
”(60mm) 2
3
⁄
8
”(60mm)
Depth: 8
3
⁄
8
”(211mm) 8
3
⁄
8
”(211mm)
Parts List:
GTA-500m GTA-1000m
Owners Manual: x 1 x 1
3mm Hex Wrench: x 1 x 1
4mm Hex Wrench: x1x1
Speaker Level Input Cable: x 1 x 1
Mounting Screws: x 4 x 4
Replacement Fuses (ATC): x 2 (25 amp) x 3 (35 amp)
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
Verify High-level cables from speaker(s) to amplifier are securely connected
RCA or Speaker Level Input from amplifier to source are securely connected
Sensitivity adjustment on amplifier is correctly adjusted
Engine Noise from Speaker(s)
Turn source “OFF” and disconnect RCA cables at amplifier
If noise stops, check equipment and cables leading to amplifier
Verify RCA cables are of good quality with no breakage to internal shields
RCA cables from source to amplifier are not run alongside power
Amplifier Output Distorted—Music not Recorded with Intentional Distortion
Verify Source output to amplifier is not distorted
Amplifier input sensitivity is correctly adjusted
Amplifier Shutting Down, RED LED Lit—Amplifier in Thermal Protection Mode
Verify Amplifier is mounted with adequate space around heatsink
Amplifier is not mounted under carpet
Speakers meet correct impedance for application (mono or stereo hookup)
Amplifier not Turning “ON”, RED LED Lit—Amplifier not Connected to a Shorted Speaker
Verify Speaker crossover is not defective
High-level cables from speaker to amplifier are not shorted
Amplifier not Turning “ON”, RED LED Lit—Speakers, Crossovers, and Cable OK
Internal fuse needs to be replaced
Verify Replace fuse with fuse of same value
Amplifier not Turning “ON”, RED LED Lit—Speakers, Crossovers, and Cable OK
Amplifier requires service
Boston, B/A ellipse symbol, Boston Acoustics, and the Boston Acoustics logo are registered trademarks and Q-Tune is a trademark of Boston Acoustics, Inc.
Specifications are subject to change without notice. © 2010 Boston Acoustics, Inc. All rights reserved. Covered by patents issued and/or pending. 142-003889-0
If Service Seems Necessary:
First, contact the dealer from whom you purchased the product, or contact us via e-mail at:
Wewill promptly advise you of what action to take.
Boston Acoustics, Inc. 300 Jubilee Drive, Peabody, MA 01960 USA
T: 978.538.5000 F: 978.538.5100 W: bostonacoustics.com/car
BA P/N BA PART DESCRIPTION Vendor P/N GTA-800m GTA-1000m
111-001708 GTA800M HEAT SINK 262-41.1.GTA800M70
XX
111-001710 END CAP LEFT 262-46.14.GTA50270
XX
111-001711 END CAP RIGHT 262-46.14.GTA50271
XX
111-001712 END CAP SCREW 019-31.13.1524R02000
XX
111-001717 BOTTOM COVER GTA800M 262-42.1.GTA800M70
X
111-001733 BOTTOM COVER GTA1000M 262-42.1.GTA1000M70
X
120-003321 MAIN PCB ASSEMBLY GTA800M 529-36.1.GTA800MM20930
X
120-003322 SUB PCB ASSEMBLY GTA800M 529-36.1.GTA800MM20931
XX
120-003431 MAIN PCB ASSEMBLY GTA1000M 525-99.1GTA1000M1
X
125-000607 CAPACITOR 017-03.8106.082513032100220119
XX
125-000609 CAPACITOR 017-03.8106.082013033200330127
XX
125-000611 CAPACITOR 017-03.8103.082518042025332102
XX
125-000612 CAPACITOR 017-03.1103.0830300610803321
XX
126-000143 XFMR GTA800M 524-07.12.GTA800MM0
XX
126-000148 INDUCTOR 048-08.12.RAB14500
XX
126-000149 INDUCTOR 048-08.12.GTA800M0
XX
126-000150 INDUCTOR 048-08.12.GTO301R10
XX
126-000151 INDUCTOR 048-08.12.ZX500R10
XX
126-000152 INDUCTOR 048-08.12.ZX2500R10
XX
126-000164 XFMR GTA1000M 524-07.12.GTA1000M0
XT1
132-000139 OP AMP DUAL 501-06.82.203NJM2068M
XX
132-000140 OP AMP QUAD 501-06.82.203NJM2058M
XX
132-000141 PWM CONTROLLER 501-06.12.203TL494
XX
132-000142 POWER AMP CONTROLLER 2CH 501-06.82.227F111
XX
132-000143 VOLTAGE REGULATOR 501-06.82.111KIA7809AF
XX
132-000144 VOLTAGE REGULATOR 501-06.82.111KIA7909AF
XX
132-000145 DIODE FAST RECOVERY 200V 10A 464-04.815.33YG225D2
XX
132-000149 PWM MOSFET 500-05.114.01IRF3205
X
132-000152 POWER FET 500-05.114.01IRF9640
X
132-000153 POWER FET 500-05.114.01IRF640
X
132-000171 POWER FET 500-05.114.01FQP12P20
XQ107, Q109, Q115, Q117, Q119
132-000172 POWER FET 500-05.114.01FQP19N20
XQ108, Q110, Q116
132-000173 PWM MOSFET 500-05.114.01FDP30N06
XQ16,Q18, Q19, Q21, Q22, Q23
137-001617 GTA800M LOGO NAMEPLATE 270-56.17.GTA800M100
X
137-001651 GTA1000M LOGO NAMEPLATE 270-56.17.GTA1000M100
X
141-002775 EPS GTA 242-57.12.GTA5020
XX
141-002750 GTA800M GIFT BOX 241-59.11.GTA800M
X
141-002764 GTA800M Master Pack Carton 240-58.11.GTA800M0
X
141-002835 GTA1000M GIFT BOX 241-59.11.GTA1000M0
X
141-002836 GTA1000M Master Pack Carton 240-58.11.GTA1000M0
X
GTA1000M Service Parts List (new items highlighted in yellow)
internal fuse change from (1) @ 40 amps to (2) @ 35 amps each
INPUT SENSITIVITY
(200mV ~ 5V)
VARIABLE LPF
(50Hz ~ 150Hz)
R-ch
Q
-
TURN (10
~
50Hz)
MAIN AMP
Ap 50 Hz 150Hz
Ap
(200mV
~
5V)
Q
TURN
(10
50Hz)
Q-Adj (0.7 ~ 1.6)
Ao
HIGH INPUT
+
-
HIGH
INPUT
+
-
A
p
L-ch
p
Block Diagram - GTA800M and GTA1000M
22002200
22002200 22002200
22002200
22002200
FDP030N06FDP030N06
FDP030N06FDP030N06
FDP030N06FDP030N06
FDP030N06FDP030N06 FDP030N06FDP030N06
FDP030N06FDP030N06
47K
47K
K
K
10
10
10
10
GTA1000M
MP-10D7-0080
2010.11.29
GTA1000M.SCH
*
*
*
*
*
*
*
*
*
11.7.19 2R5 change to 5.6K
C38 change to105p
Add R105,R116 to 102p
Add 104p at Q4 C and E between
Add Ll4148 at Q3 C and R4 between
Add 102p at output GND and chassis
between
Add C141 and R159 GND
to chassis each between 105p
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