Boston Acoustics GTA-800M, GTA-400M User Manual
High Performance
Monoblock Ampliers
GTA
Introduction
hank you for choosing Boston Acoustics and congratulations, you’ve
T
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.
Specifications
Technical Specifications:
GTA-400m GTA-800m
Rated Power (CEA-2006-A):
@ 2-Ohm (Mono) 400 Watts x 1 800 Watts x 1
@ 4-Ohm (Mono) 250 Watts x 1 500 Watts x 1
Impedance Stability: 2Ω 2Ω
Frequency Response (-3dB): 10Hz–150Hz 10Hz–150Hz
Signal-to-Noise Ratio: >90dB >90dB
(A Weighted)
THD+N: 0.05 0.05
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): 40 Amp 2 x 40 Amp
Dimensions:
Width: 10
Height: 2 3⁄8” (60mm) 2 3⁄8” (60mm)
Depth: 8
5
⁄8” (268mm) 12 1⁄2” (318mm)
3
⁄8” (211mm) 8 3⁄8” (211mm)
Parts List:
GTA-400m GTA-800m
Owners Manual: x 1 x 1
3mm Hex Wrench: x 1 x 1
4mm Hex W
Speaker Level Input Cable: x 1 x 1
Mounting Screws: x 4 x 4
Replacement Fuses (A
rench:
TC):
x 1x 1
x 1 (40 amp) x 2 (40 amp)
2
3
5
1
4
8
9
1
0
1
1
7
2
6
3
5
1
4
8
9
10
11
7
2
6
GTA-400m
GTA-800m
Connections and Controls
u Speaker Level Input
v RCA Input (Left and Right)
w Gain (250mv to 5.0v - continuously variable)
x Q-T
y Lowpass Crossover Adjustment (50Hz to 150Hz - cont. variable)
z Q-Tune™Highpass (Subsonic) Adjustment (10Hz to 50Hz - cont. variable)
{ GTA-RSL Port (Remote Gain)
| Speaker Output Block
} Status LED (Blue = Normal / Red = Fault Mode)
~ Fuse (Replace with same value only, refer to specifications on page 2)
™
une
“Q” Adjustment (0.707 to 1.6 - cont. variable)
Power Block (12v / Remote / Ground)
Connections / Controls
Status LED
The Boston Logo will illuminate “Blue” under normal operating conditions.
The LED will illuminate “Red” during start-up and under fault conditions. If the
LED is still red after start-up, please refer to troubleshooting on page 8.
Speaker Level Input Cable
GTA amplifiers offer a dedicated speaker level input for ease installation into
factory systems when an RCA (low level) signal is not available. Wiring code for
the cable is industry standard;
White Solid = Left Positive White w/ Black Stripe = Left Negative
Gray Solid = Right Positive Gray w/ Black Stripe = Right Negative
Warning: Do not connect both Speaker Level and RCAs into the amplifier at the
same time as damage to the amplifier may occur.
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