Circuit diagram

1 2 34
A
B
C
D
4321
D
C
B
A
Title
NumberRevisionSize
B
Date:16-Jan-2013Sheet of
File:E:\AMP\AMP3120\Milly\3120.DDBDrawn By:
guolijuan
AMP3120 V1.0
1out
1
1-
2
1+
3
411
V+
V-
U1A
MC33079P-2060D
2out
7
2-
6
2+
5
411
V+
V-
U1B
MC33079P-2060D
3out
8
3-
9
3+
10
411
V+
V-
U1C
MC33079P-2060D
4out
14
4-
13
4+
12
411
V+
V-
U1D
MC33079P-2060D
1out
1
1-
2
1+
3
411
V+
V-
U2A
MC33079P-2060D
2out
7
2-
6
2+
5
411
V+
V-
U2B
MC33079P-2060D
3out
8
3-
9
3+
10
411
V+
V-
U2C
MC33079P-2060D
4out
14
4-
13
4+
12
411
V+
V-
U2D
MC33079P-2060D
OP1
OP2
OP5
OP6
OP3
OP4
OP7OP8
VR1A
2*5K lin
VR1B
2*5K lin
+
C16
100uF/16V
+
C13
100uF/16V
+
C20
100uF/16V
+
C21
100uF/16V
+
C22
100uF/16V
+
C23
100uF/16V
+
C28
10uF/63V
+
C29
10uF/63V
1
2
3
JK1
XLR input right
1
2
3
JK2
RCA input
1
2
3
JK3
XLR input left
left
right
C15
330pF
C14
33pF
C9
33pF
C10
330pF
R20
100K
R21
22K
R22
22K
R23
2K2
R24
10K
R11
100K
R12
22K
R13
22K
R14
2K2
R19
10K
R1
47K
R2
47K
R3
150K
R4
24K
R5
180K
R6
8K2
R17
10K
R18
10K
C18
47nF
C17
47nF
C7
47nF
C8
47nF
C11
47nF
C12
47nF
R28
18K
R29
18K
R16
100K
R15
6K8
R40
100R
R25
10K
R10
100K
R9
6K8
R38
100R
R26
10K
-14V DC
C1
4n7
C2
100nF
C3
100nF
C4
100nF
1
2
3
SW1
2Pole slide switch
0
180
+
C24
100uF/16V
VR2A
5K Lin
VR2B
5K Lin
R41
3.3K
R42
10R
R7
18K
R8
22K
R30
22K
R39
100R
R27
10K
C5
220nF
C6
10nF
C25**
C27**
C26** C19
68nF
D2
1N4148
D3
1N4148
D4
1N4148
D5
1N4148
D6
1N4148
D7
1N4148
D1
1N4148
R35
3K3/0.5W
R36
3K3/0.5W
LED1
3mm red
R45
22K
R31
22K
R43
3K3/0.5W
R33
3K3/0.5W
ZD1
15V/0.5W
ZD2
15V/0.5W
R32
22K
R46
22K
R44
3K3/0.5W
R34
3K3/0.5W
Tr2
BD139-10
Tr1
BD140-10
-14V DC
+14V DC
ground
ground
ground
ground
ground
Audio Sat left
Audio Subwoofer
Audio Sat right
+46V DCplus
-46V DC minus
Power on
LEVEL MAIN
LEVEL SUB
SAT FILTER LEFT 110Hz
SAT FILTER Right 110Hz
SUB sonic 30Hz
Phasereverse
sublimiter
subfilter 130Hz
-14V DC
+14V DC
+14V DC
1
2
3
1
2
3
Voltage supply
1
2
3
4
5
6
7
8
9
10
JK4