McIntosh C8AC Service Manual

MC275
21 22
BAL INPUT 751377 SCH
5
MAIN
R
4
3
DS1:1
G
5
2
DS1:2
G
5
2
DS2:2
R
4
3
DS2:1
12AT7
McIntosh
USA
12AT7
McIntosh
USA
12AT7
McIntosh
USA
12AT7
McIntosh
USA
12AX7
McIntosh
USA
12AX7
McIntosh
USA
12AX7
McIntosh
USA
LEFT
RIGHTINPUT
L RED
ORN 1
V1 V2 V3 V4 V5 V6 V7
R RED
GRN
J7:9
J7:7
J7:6
J7:4
475
R77
681
R79
3.32K
R78
475
R80
681
R82
3.32K
R81
475
R83
681
R85
3.32K
R84
681
R88
3.32K
R87
475
R86
475
R89
681
R91
3.32K
R90
475
R92
681
R94
3.32K
R93
475
R95
681
R97
3.32K
R96
ORN 2
ORN 3
ORN 4
ORN 5
ORN 6
ORN 7
J7:2
J7:3
Tube Lighting
8
G
5
2
DS3:2
R
4
3
DS3:1
G
5
2
DS4:2
R
4
3
DS4:1
G
5
2
DS5:2
R
4
3
DS5:1
G
5
2
DS6:2
R
4
3
DS6:1
G
5
2
DS7:2
R
4
3
DS7:1
J7:11
J7:1
J7:8
J7:17
J7:18
J7:15
J7:13
J7:14
+5V
J7:5
D12 D13 D14 D15 D16 D17 D18 D19 D20 D21 D22 D23 D24 D25 D26 D27 D28 D29 D30 D31 D32 D33 D34 D35 D36 D37 D38
4
2
3
1
S
-
+
G
J10
1
TOP
3 5
J9:1
2
BOTT
4 6
J9:2
4
2
3
1
S
-
+
G
J11
R/MONO
L
R/MONO
L
1
3
2
J8:1
4
6
5
J8:2
J13:5
J13:1
PC IN
PC OUT
J13:2
J13:7
J13:8
J13:10
J13:4
J13:12
J14:6
J14:7
J14:5
J14:1
J14:2
J14:3
J14:4
33.2K
R109
150K
R107
4.7µF
C41
1M
R105
1M
R102
4.7µF
C39
150K
R103
100K
R100
.47µF
C37
33.2K
R108
150K
R106
4.7µF
C40
1M
R104
1M
R101
4.7µF
C38
150K
R99
100K
R98
.47µF
C36
J7:12
B
6
1
DS1:3
B
6
1
DS2:3
B
6
1
DS3:3
B
6
1
DS4:3
B
6
1
DS5:3
B
6
1
DS6:3
B
6
1
DS7:3
J12:1
J12:2
J12:3
J12:4
SP1:1 SP1:2 S
P1:3
SP1:4
BREAKAWAYBREAKAWAY
BREAKAWAY
BREAKAWAY
BREAKAWAY
MAINAMPLIFIER
MP7 MP9 MP11 MP13 MP15 MP17 MP19
MP6 MP8 MP10 MP12 MP14 MP16 MP18
MP1 MP2 MP3 MP4 MP5
3
3
3
3
3
L UNBAL
GND
R UNBAL
R BAL+
R BAL-
L BAL+
L BAL-
3
3
PC IN
TUBE LT
PC OUT
PC GND
GND
2
2
2
2
2
1 1 1
L RCA
GND
R RCA
L RED
R RED
ORN 2
+5V
ORN 1
ORN 3
ORN 4
ORN 5
ORN 6
ORN 7
GRN
2
2
2
2
2
2
2
2
2
2
2
Balanced
5
Input
Unbalanced Input
6
Power Control
7
UNBAL INPUT 751377 SCH
6
PWR CNTRL 751377 SCH
7
TUBE LT 751377 SCH
8

McIntosh C8AC Specifications

General

Brand	McIntosh
Model	C8AC
Category	Amplifier
Language	English