McIntosh C2300 - How to Connect the C2300

C2300
13 14
MAIN 750761 SCH 3 OF 6
2C
0V
0V
0V
LEFT
0V
5V
5V
5V
0V
-5V
0V
0V
LEFT
5V
5V
5V
5V
5V
.6V
0V
0V
0V
0V
.6V
0V
-9dB
0V
0V
.6V
0V
0V
-15V
15V
-5V
5V
0V
0V
47.5k
R181
0V
267k
R183
0V
5V
0V
267k
R185
3C J6-11 3C J6-10 3C J6-9
3C J6-8
3C J6-6 3C J6-5
3C J6-4
3C J6-3
J6-1
0V
0V
5V
5V
5V
.6V
.6V
1M
R204
-3dB
1M
R207
.6V
.6V
.6V
1M
R215
.6V
267k
R218
.6V
-9dB
.6V
1M
R233
267k
R182
J16:3 J16:4 J16:8 J16:9
NEGATIVE
POSITIVE
10uF
C118
.1uF
C123
10M
R199
DECODER
POST ATTENUATOR
DRIVER
.6V
0V
0V
-3dB
0V
-6dB DRIVER
0V
.6V
-9dB DRIVER
-9dB DRIVER
LEFT POST ATTENUATOR
.6V
-12dB DRIVER
0V
0V
0V
-12dB
267k
R172
267k
R171
.1uF
C113
221
R175
10uF
C111
12.1k
R177
.1uF
C116
12.1k
R176
220pF
C117
1k
R180
8.25k
R179
47uF
C119
47uF
C120
10uF
C127
10uF
C122
267k
R184
3C J6-12 3C J6-7
150k
R190
150k
R191
J6-2
-13.7V
1
2
3
S
G
D
Q54
1k
R195
1k
R194
1M
R200
-13.7V
TUBE MUTE
10M
R198
.1uF
C144
DECODER
TUBE MUTE
3 1
2
Q55
-13.7V
267k
R202
10uF
C152
47.5k
R209
1000pF
C149
1000pF
C150
10M
R205
10uF
C151
.6V
1000pF
C154
31
2
Q61
1000pF
C153
1M
R212
31
2
Q60
10M
R213
2.21M
R221
31
2
Q65
1M
R222
31
2
Q64
24.9k
R228
1M
R225
.6V
31
2
Q68
267k
R227
1 2
3
S
G
D
Q66
16.5k
R235
-12dB
1000pF
C158
1000pF
C157
1 2
3
S
G
D
Q70
10M
R231
10uF
C112
10uF
C126
J16:1 J16:2 J16:5 J16:6 J16:7
J16:10 J16:11 J16:12
220pF
C145
1
2
3
S
G
D
Q53
267k
R203
10M
R206
47.5k
R208
10M
R214
267k
R219
2.21M
R220
267k
R229
1 2
3
S
G
D
Q67
24.9k
R226
1 2
3
S
G
D
Q71
10M
R232
16.5k
R234
RIGHT
VOLUME CONTROL
BUFFER
.1uF
C121
RIGHT
TUBE MUTE
20K
R193
TO TUBE
-3dB DRIVER
-3dB DRIVER
-6dB DRIVER
-6dB
-12dB DRIVER
5 VOLT REGULATOR
3
1
2
IN OUT
U23
5 VOLT REGULATOR
2
31
IN OUT
U22
.1uF
C115
BUFFER
2
1
3
4
K26
10uF
C114
10k
R173
VOLUME CONTROL
.1uF
C124
10uF
C125
VOLUME CONTROL
.47uF
C147
20K
R192
-6dB
33.2k
R217
31
2
Q57
31
2
Q56
267k
R210
200k
R201
1 2
3
S
G
D
Q58
1 2
3
S
G
D
Q62
1000pF
C156
31
2
Q69
1000pF
C155
1M
R230
10M
R223
10k
R174
1k
R178
9
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
ZCEN
DATAO
DATAI
AINR
AGNDR
AOUTR
VA+
VA-
AOUTL
AGNDL
AINL
M\U\T\E\
SCLK
VD+
C\S\
DGND
U25
1 2
3
S
G
D
Q59
267k
R211
1 2
3
S
G
D
Q63
33.2k
R216
10M
R224
RIGHT POST ATTENUATOR
2
3
1
-
+
8 4
B+
B-
U24:1
6
5
7
-
+
U24:2
QF
5
QG
6
QD
3
QA
15
QB
1
GND
8
QH
7
SQH
9
OE
13
VCC
16
QC
2
QE
4
LCLK
12
RESET
10
SCLK
11
DATA
14
U27
VOL_CLK
VOL_CS
VOL_CS
VOL_DATA
5V
-15V
-15V
-15V
-15V
-15V
-15V
-15V
-15V
-15V
-15V
-15V
-15V
-15V-15V-15V-15V
-15V
TUBE_ON
-15V
15V 5V2
-5V2
5V2 -5V2
5V2
5V2
-5V2
5V2
5V
5V
LISAUD-L
LISAUD-R
MONO
R_OUT
L_OUT
5v
21 22 24
25
26 27 28 29 30 31
32
1 2 3
4
5
6 7
8
9
10 11 12 13
14
15 16 1 7
18
19 20 23
InA GND SW
C
A
OutA GND Tone_Tr1a Tone_Mi1a
Tone_Ba1a Ton
e_B
a
2a
NC G
ND
VDD
o
ut
D
AT
A
CLO
C
K
LATC
H
ADR0 ADR1
V-
V+
NC NC
Ba2b
Ba1b
Mi2 b Mi 1b
Tr1b
GND
OutB
SWCB
GND
InB
Tone_Mi
2
a
U26
5V2
-5V2
10uF
C128
10uF
C129
.0022uF
C130
.0022uF
C131
10uF
C132
10uF
C133
.1uF
C137
4.99k
R186
4.99k
R187
10uF
C134
10uF
C135
.1uF
C136
100uF
C139
100uF
C140
TONE_CS
VOL_CLK
VOL_DATA
220pF
C141
1k
R189
1kR188
10uF
C138
3C 3C
332
R236
7V
-7V
332
R237
3 2
1
IN OUT
U28
1.5k
R197
3
1
2
INOUT
U29
1.5k
R196
15V
-15V
7V
-7V
10uF
C159
10uF
C160
7V
-7V
-7V
-7V
-7V
1k
R253
1k
R254
.1uF
C175
.1uF
C176
L MAIN 1
GND GND
R MAIN 1
GND GND
TUNE ON
GND
L MAIN 2
GND
R MAIN 2
GND
0V
0V
0V
0V
POSITIVE
7 VOLT REGULATOR
NEGATIVE
7 VOLT REGULATOR
0V
0V
0V 0V