Page 1
4.7K
R71
1N914
C41
47uF
TIP112
7805
RED=CLIP
GREEN=POWER
4.7KR23
R69
5.1M
15V
1N5245B
C42
35V
47uF
CR19
CR20
1N914
35V
300KR63
TIP112
+48V
CR6
1N4003
470uF
C6
25V
5.7V
VR1
+21V
CR21
.33uF
C35
R28
Q1
20K
R27
470uF
CR5
10KR26
1N4003
RED
10K
GREEN
D1
R8
300
ATTEN
39KR61
10KR37
330pFC40
35V
+48V
2K
R83
+33V
Q2
R68
25V
C7
1N4003
CR4
1N4003
470uF
C4
25V
1N914CR8
C1
16V
2200uF
CR7
5.7V
J113
C10
100uF
TUBE
R56
470
R84
10uFC21
50V
10uFC20
22KR48
20K
100uFC8
C9
100uF
C5
470uF
CR3
1N4003
CR2
C2
2200uF
Q13
Q14
63V
300K
50V
50V
63V
63V
25V
1N4003
16V
2N5088
J111
TUBE1
6
TUBE1
1
R22
20K
22uFC49
47V
1N5261B
+21V
CR1
1N4003
.1uFC36
J5
Q5
1N914CR16
R43
20K
50V
C44
.47uF
CR22
1N914
+33V
8
7
5
9
9
4
2
3
ATTEN
10uF C24
20K
50V
R85
WARM
+33V
CR15
10KR29
VS1
35V
C3
1000uF
9VOLTS AC, .4AMPS
POWER SUPPLY INPUT
+48V
.1uFC39
50V
10uF
C27
2N4403
Q4
20K
R51
1K
R15
1KR14
Q3
SW1
J4
"OUTPUTS"
R55
100K
2.2uF
C43
+33V
33K
R72
CR23
1N5818
CR24
Q12
1N5818
MPSA29
R54
5.7V
SW2
2K
R59
63V
C34
100uF
3.3KR17
Q7
2N4403
10K
R33
2N4403
Q6
VS
2N4401
R62
4.7K
50V
10uFC38
10KR30
25V
47uFC16
IN
OUT
300R12
+48-1
PHANTOM POWER SWITCH
21
3
J3
50V
OPL
C25
50V
10uF
R38
1M
(MIC)IN
MIC/LINE GAIN SWITCH
R53
100K
+33V
S
3
2
1
10K
R70
1M
R75
20K
R74
2K
R73
R76
1K
CW
LEVEL
3.3K
OUTPUT
10uFC26
(LINE)OUT
1KR36
+33V
20K
R45
150R5
GAIN
INPUT
10KR57
6.3V
C19
+33V
20K
R44
1N914CR111N914CR13
10R3
47uFC14
CR9
1N914
1%
6.98K
R25
1%
R24
6.98K
100K
J2
R52
63V
100uFC11
300
R11
300
R10
R9
300
C45
50V
22uF
TL072P
+33V
4
+
-
25V
100K
R58
50V
100
R16
47uFC23
25V
Q11
Q10
+40dB+0dB
CW
Q9
Q8
220uF
+IN
C28
330pF
25V
63V
100uF
C12
3
2
1
21
"MIC INPUT"
SW3
7
U3
-
6
5
47uF C17
+33V
8
39K
R50
2N4403
2N4403
2N4403
2N4403
R32
+33V
63V
100uF
C13
S
3
"LINE INPUT"
8
R41
-
2
10K
4.7KR19
39K
R49
REVDWG NO.SIZE
B
-+
M1
LAMP2LAMP1
R67
2K
NE5532
+
5
300
47uF
1N270
4
AC
215 TREMONT STREET
APPLIED RESEARCH & TECHNOLOGY
CR17
1N914
2K
R66
DATEAPPROVALS
25V
C32
DRAWN
16V
ROCHESTER, NY 14608
11-02-2001
R.Kukuchka
ENGINEERING
0UT
(NORMAL)
IN
PHASE SWITCH
(REVERSE)
100
CR18
R65
+
10K
1
NE5532
4
U2
+
3
R39
10K
25V
C18
10KR40
47uF
+33V
8
R42
7
U2
-
6
1 OF 1
SHEET
127V-1-X.SCH
127V4001-10X
FILENAME
TUBE MP V3
11-2-2001
PLOT DATE
MANUFACTURING
CHECKED
ISSUED
47uFC37
39K
+33V
8
-IN
25V
+33V
7
U1
-
6
R34
330pFC29
TL072P
5
C30
+
R21
R60
R20
50V
4
10K
4.7K
4.7K
CR14
1N914
VS
100pF
10K
R31
+33V
10KR77
R47
22K
1
TL072P
8
4
U3
-
+
2
3
10K
R78
HIGH
1M
R82
C46
.0068uF/5%
1M
R79
VS
.1uF/5%
C48
LOW
15K R81
1M
R80
.1uF/5%
C47
OPL
WARM
LOW
HIGH
BIT0
BIT1
BIT2
BIT3
SW4
COMMON
100pFC31
R7
R6
CR12
1N914
CR10
150
150
1N914
R46
10KR35
10R4
47uFC15
20K
10uF C22
+33V
8
5.1MR1
-
2
R64
1
10K
U1
.1uF
TL072P
4
+
3
1MR2
4.7KR18
1KR13
C33
J1
VS1
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