EasyManuals Logo

McIntosh C8AC Service Manual

McIntosh C8AC
22 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #12 background imageLoading...
Page #12 background image
19 20
AMPLIFIER 751377 SCH
3
150k
R58
150k
R57
12AT7A
5
9
4
V6:3
100k
R33
12AX7A
8
6
7
V5:2
10k
R42
100k
R38
12AT7A
8
6
7
V6:2
1000µF
C27
15k
R72
1M
R76
1M
R75
200V
D8
12AX7A
5
9
4
V5:3
12AT7A
5
9
4
V7:3
12AX7A
3
2
1
V5:1
12AT7A
3
2
1
V6:1
15k
R71
.047µF
C25
475
R41
100µF
C19
.047µF
C24
10k
R31
1M
R50
200V
D11
12AT7A
8
6
7
V7:2
.047µF
C30
1M
R48
100pF
C15
.047µF
C31
12AT7A
3
2
1
V7:1
+350V
+350V
100k
R37
100k
R34
47.5k
R52
22pF
C11
100µF
C21
2.21M
R46
150k
R54
12AX7A
8
6
7
V4:2
2.21K
R8
100µF
C2
12AX7A
5
9
4
V4:3
+12.6V
2 1
3
Q1
221k
R9
+200V
10k
R11
221k
R6
+200V
100k
R5
.1µF
C17
100k
R10
22.1k
R21
22.1k
R20
V11 CATH
V11 CATH
150k
R56
150k
R55
12AT7A
5
9
4
V2:3
AGND
100k
R35
12AX7A
8
6
7
V3:2
10k
R40
100k
R44
30k
R62
12AT7A
8
6
7
V2:2
1000µF
C26
15k
R70
100k
R68
1M
R74
1M
R73
200V
D9
12AX7A
5
9
4
V3:3
12AT7A
5
9
4
V1:3
12AX7A
3
2
1
V3:1
12AT7A
3
2
1
V2:1
15k
R69
.047µF
C23
475
R39
100µF
C18
.047µF
C22
10k
R29
1M
R49
200V
D10
12AT7A
8
6
7
V1:2
.047µF
C28
1M
R47
100pF
C14
.047µF
C29
12AT7A
3
2
1
V1:1
+350V
+350V
100k
R43
100k
R36
47.5k
R51
100µF
C20
2.21M
R45
150k
R53
12AX7A
3
2
1
V4:1
2.21K
R14
100µF
C3
2
1
3
Q2
221k
R16
+200V
10k
R22
221k
R12
+200V
100k
R4
.1µF
C16
100k
R17
22.1k
R24
22.1k
R23
V8 CATH
V8 CATH
J1:1
MAIN - LEFT
MAIN - RIGHT
J5:13
J5:2
J5:6
J5:9
J5:10
J5:7
J5:11
J6:4
J6:12
J6:10
J6:9
J6:5
J6:6
J6:7
J6:3
J6:8
R OUT 16
R OUT 16
L OUT 16
L OUT 16
+350V
D3
D2
3.32K
R13
3.32K
R7
1µF
C6
1µF
C4
10µF
C1
+200V
200V
D1
+350V
10k
R30
10k
R32
1
2
3
G
D
S
Q4
1 2
3
G
D
S
Q3
2.21M
R27
2.21M
R28
J1:3
J1:5
1µF
C32
30k
R61
+700V
+700V
100k
R66
1µF
C33
100k
R65
1µF
C34
30k
R63
+700V
100k
R67
1µF
C35
30k
R64
+700V
+12.6V
+700V
J5:1
100pF
C8
AGND
100pF
C7
+12.6V
+12.6V
J5:14
J5:3
J5:5
J5:8
J6:11
BIAS
BIAS
J6:1
J6:2
J4:7
INP SW
MODE SW
ON
OFF/STBY
POWER SW
J2:1
J2:2
PWR SW
MUTE
MAIN
J4:10
J4:1
J4:12
J4:9
J4:6
J4:3
L BAL+
L BAL-
R BAL-
L UNBAL
R UNBAL
46.4k
R3
22pF
C10
22pF
C12
22pF
C13
J3:1
J3:2
2.21K
R1
STANDBY LED
1
5
8
7
6
2
3
4
K2
1
5
8
7
6
2
3
4
K1
J4:4
10K
R19
10K
R18
J1:4
J1:2
J1:6
J1:7
BAL INPUT
J6:13
J6:14
.1µF
C9
+12.6V
100
R15
220µF
C5
1K
R25
1K
R26
22.1K
R59
22.1K
R60
200V
D7
200V
D6
200V
D5
200V
D4
1
1
1
1
2
2
2
2
2
R BAL+
5
5
5
5
5
5
5
PWR SW
+5V
MODE SW
MUTE
INP SW
L UNBAL
GND
R UNBAL
R BAL+
R BAL-
L BAL+
L BAL-
V9 PLT
V8 CATH
V8 GRID
FIL C
FIL A
+12.6V
GND
V9 GRID
L OUT 16
V9 PLT
V10 PLT
V11 CATH
V11 GRID
FIL C
FIL B
BIAS
+700V
V10 GRID
R OUT 16
V11 PLT
+350V
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
GND
PWR SW
GND
STBY LED

Other manuals for McIntosh C8AC

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the McIntosh C8AC and is the answer not in the manual?

McIntosh C8AC Specifications

General IconGeneral
BrandMcIntosh
ModelC8AC
CategoryAmplifier
LanguageEnglish

Related product manuals