JBL GX-A604 Service Manual

1 2 3 4 5 6 78
A
B
C
D
8
7654321
D
C
B
A
INPUT SENS
0.2V-4V
power supply
1
2
3
GROUND
REM
+12V
bass boost
45Hz 0-12dB
power
A1
P1
A2
A4
C7
A5
HP ON
HP OFF
A6
1ch(L) -out
2Ω/4Ω
1ch input
Class AB Audio Power Amplifier
input selector
variable crossover
FUSE
P2
HI-IN auto ON
A1
GX-A604
A2
PRT
12
3
A
input mode
2ch
4ch
3ch
4ch
A3
switch
1
2
3
4
1&2ch HI IN
A
A1
A2
INPUT SENS
0.2V-4V
B1
B2
B4
B5
HP ON
HP OFF
B6
2ch(R) +out
2Ω/4Ω
2ch input
Class AB Audio Power Amplifier
input selector
variable crossover
A
A2
A1
Pit ch 2.5mm
INPUT SENS
0.2V-4V
C1
C2
C4
C5
LP
FLAT
C6
3 ch(L) -out
2Ω/4Ω
3ch(L) input
Class AB Audio Power Amplifier
input selector
variable crossover
1
2
3
4
3&4ch HI IN
A1
A2
Pit ch 2.5mm
A
bass boost
45Hz 0-12dB
C7
INPUT SENS
0.2V-4V
C1
C2
C4
C5
LP
FLAT
C6
4 ch(R) +out
2Ω/4Ω
4ch(R) input
Class AB Audio Power Amplifier
input selector
variable crossover
A
A1
A2
3ch
4ch
3 2
1
4
A
7 6
5
8
B
HP
HP
crossover
32/320Hz 12dB/ oct
HP/LP pass
10Hz 320Hz ＞40 KH z32Hz
crossover
32/320Hz 12dB/ oct
HP/LP pass
10Hz 320Hz ＞40 KH z32Hz
crossover
80Hz 12dB/ oct
HP pass
10Hz ＞40 KH z80Hz
crossover
80Hz 12dB/ oct
HP pass
10Hz ＞40 KH z80Hz

JBL GX-A604 Specifications

General

Signal-to-Noise Ratio (SNR)	93 dB
Number of amplifier channels	4 channels
Frequency response	20 Hz