Boston Acoustics GT-42 Car Stereo System User Manual


 
4
Control Functions
FRONT RCA Inputs
RCA cables marked “FRONT” from head unit or from other line level device
should be connected here. Use both inputs (L & R) for stereo.
FRONT Remote Input
Use the supplied FEMALE quick connector to connect the REMOTE trigger lead
from the head unit to the amplifier. Amplifier turns “ON” when head unit is turned
“ON.” One FEMALE .210" connector is supplied with amplifier.
FRONT Input Switch
In the left position, the L & R inputs go to the FRONT L & R channels of the ampli-
fier. In the right position, the L & R inputs go to the FRONT and REAR L & R chan-
nels of the amplifier.
FRONT and REAR Sensitivity
Turn control clockwise to increase the amplifier sensitivity to incoming signals. Turn
control counterclockwise to decrease the amplifier sensitivity.
FRONT Highpass Crossover Controls
To use 12dB/octave crossover, move switch to right-hand position. Highpass
crossover frequency is adjustable from 20Hz to 350Hz by rotary control. (Moving
switch to left-hand position will bypass crossover functions.)
1
2
1
2
3
4
5
12.6–14.4VDC
B+ B+
GROUND
GND
GND
L
R
MONO
FRONT SPEAKER OUTPUT
MONO
REAR SPEAKER OUTPUT
L
R
ON
SAFE
STATUS
2
1
HIGHPASS
OFF ON
REAR INPUT
STEREO
MONO
L
SUBWOOFER LEVEL
OFF ON
LOWPASS
OFF ON
LOWPASS SLOPE
REAR SPEAKER OUTPUT
5
0.2
V
INPUT SENSITIVITY 2.6
5
0.2
V
INPUT SENSITIVITY 2.6
FRONT INPUT
STEREO SEND
INPUT
REAR
20
350
Hz
200
0.7
1.2
Q/HP
0.95
50
350
Hz
200
REMOTE
REMOTE
SUBWOOFER LEVEL
GROUND
GND
GND
12.6–14.4VDC
B+ B+
FUSE 3 x 25A
L
R
12dB24dB
MONO
12dB
ST
N ON PR IN TA BL E AR E A
FRONT SPEAKER OUTPUT
L
R
MONO MONO
3
4
4
5
6
129
8
7
11
10
12