Text preview for : art pro vla schem.pdf part of ART Pro-2 RT Pro 2 tube leveller
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1
2
3
4
5
6
7
8
BYPASS-1
1 2
INPUT 1-XLR
J3
2 F 1
R63
SW4A JP2 C39
1 2 3 4 5 6 7 8 9 10
3
Active LED1
+45V
R22
-15
Byp.
4 6 7
10.0K
C41
3
JW1
10KD 15C
JP1
CH1_BUFF 1 2 3 -INPUT_1 4 +INPUT_1 5 6 +OUTPUT_1 7 -OUTPUT_1 8 +15 9 10 -15
5
1.5K Red-90^
-OUT-1
10uF 50V
C28
THR_DRIVE_2 THR_WIP_2A 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10
THRESHOLD-1
VR1A
CW
SW4B
8
G
R67
6
100pF m
7
0dBm
VR1B -20dBm
CW
Ch1 POTS PCB
RATIO-1 OUTPUT-1
+12 10K Lin 0dB
10uF 50V
C30
100uF 63V
C36 R64
10.0K
R62
10uF 50V
R56 C42
2
220K
V1A
1
F
TL072
+15-A
11
+OUT-1
100K Lin
10uF 50V
J4
5 4 3 2 1
10.0K
R59
5
10.0K
A5B
+15-A
SW4C SW4D
9 10 12 +15
R17
+20dBm 100:1
R18
20.0K 10.0K
R55
V1B
6
100K
7
R74
100
100
4:1
3 4 9
M1
M2
5 8
C33
12AT7
C43
TUBE_OUT_1
Channel 1
NE5532
5 6
-15-A
8
JUMPER-10x4
TUBE_OUT_1 WIPER_1 3 2 1
INPUT 1 TRS/UNBAL
C44
10.0K
R77
R60
8
3 2 1
VR8
R81
10.0K
5 7 6
25K Trim
R31
PL2
PL1
VR2
2:1
VR3
330pF m 47uF 25V
C34
V1-Filament
R72
10uF 50V
+15V
A2B
20.0K
Q5
MPSA29
47uF 25V
7
R21
.1 m 5.1M
R78
10.0K 1M
R80 C37
A3A
A5A
TL072
-15-A
2.2K
C29
NE5532
-15
4.99K
R57
R20
C21
4
4
10.0K
R44
1N5235Bx 2
D23 D22 R45 D21
DET_LINK_1
R71 R51 R14
A3B
E
1
2
R50
R49
C38 C35
G
1 2 2 4 -15
3
300
J1 R38
-15-A
10uF 50V 10uF 50V
-15
R110
3
1.5K Red-90^ Link
4
SW5A R111
VTL5C2
LADDER_1
5 4 3 2 1
300 R48 300
5.1M
5
CV_LINK_2 CV_LINK_1
6 7
CV_OUT_2
SW5B
8 DET_LINK_2
OUTPUT 1-TRS/UNBAL
DET_LINK_1
9 10 12
SW5C
11 THR_OUT
REAR PANEL Break-Away
D
THR_WIP_2 THR_WIP_2A
SW5D
BYPASS-2
1 2
INPUT 2-XLR
J7
2 1
R122
-15
8
SW9A C61 JP4
1 2 3 4 5 6 7 8 9 10
3
Active LED5
R113 C59
R98
2 3
4
Byp.
4 6 7
10.0K
C63
G 3
JW2
JP3
CH2_BUFF 1 2 3 -INPUT_2 4 +INPUT_2 5 6 +OUTPUT_2 7 -OUTPUT_2 8 +15 9 10 -15
5
1.5K Red-90^
+OUT-2
SW9B
8
10uF 50V
THR_WIP_2 -OUT-2 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10
R128
6
100pF m
7
100K Lin
10K Lin
10uF 50V
J8
5 4 3 2 1
10.0K
R118
5
SW9C
11
9 10
1
6
10.0K
TL072
+15-B
A7B
+15-B
SW9D
12 +15 TUBE_OUT_2 WIPER_2
3 4 9
M1
M2
5 8
-15-B
JUMPER-10x4
R139 10.0K
INPUT 2 TRS
C
8
C66
R134
3 2
10.0K
1
R119
VR4
8
3 2
25K Trim
R124
5 7 6
1
.1 m 5.1M
R135
10.0K 1M
R138 C57
A8A
4
A7A
TL072
-15-B
2.2K
C53
NE5532
-15
4
100pF m
1
2
R102
R101
C58 C56
G
3
300
J5 R92
-15-B
10uF 50V 10uF 50V
3
VCT2
1 2 -15 LADDER_2
R125
300
5 4 3 2 1
300 R93 300
4
VTL5C2
2N4403
14
Q9
OUTPUT 2-TRS/UNBAL
B -15 LADDER_1 +15 3 +15 3
R26
R27
R28
R29
R30
R32
R35
R37
R39
R41
R42
TL074
R66
-15
R120
100K
10.0K 10.0K 4.99K 1.5K
750
220
220
130
100
75
20.0K
R73 R75 R76 R79 R82 R84 R85
METER-2
2
4
8
R68
+15 +15
100K
10.0K 10.0K 4.99K 1.5K
8
9
4
5
8
9
4
5
8
12
12
9
10
11
10
11
10
U3A
11
6
7
6
7
U4A
GND
-15
-15
6
7
8
9
4
5
8
9
4
U3C
U4C
U5C
10
11
10
U5B
U3B
U6A
U3D
U5D
14
14
U4D
13
13
13
-15
U4B
12
3
U6C
U7C
-15
U5A
U6D
U7D
13
13
GND-PWR
+15
U6B
U7B
U7A
1
2
1
1
2
-15
+15
11
<- All Comparators LM339AN
4 5 +
12
3
12
5
14
14
14
2
2
6
7
6
7
2
1
-15
LED2
R43
C31 R46
1
300
Q3
47uF 25V
-15
2.2K
C32
A
-30 -25 -20 -15 -10 -6
-4
-2
-1
0
2N4403
R47
1. Unless otherwise marked: Resistors 1/4W 5% C.F. ***3 sign. fig's =1/4W 1% M.F. ex. 10K=5% 10.0K=1% Capacitors in uF Diodes are 1N4148 / 1N914 2. Shaded Ports are local, others connect to Power Supply (sheet #2)
1 On This Page Off-Page conn. 2
NOTES
Power Supply
212-2-1.sch
10.0K
47uF 25V -15
-30 -25 -20 -15 -10 -6
3
4
+
300
4
5
+15
TL074
A9B
TL074
9 10
1N5235B
8
2
3
R121
R131
4
+15-B
Channel 2
THR_OUT
2 3
2.2K
-
J6
R109
11
-15 1
12K
A9A
R116
10.0K
6 7
5
10.0K
-15
39K D29
20.0K
D34
6 1
WIPER_2
3 2
8
OUTPUT 2-XLR
NE5532
A8B
10uF 50V R123 220K
+
300
Stereo 1 LED4
4
3
5
+15
TL074
R54
A4B
TL074 300 R52
9 10
1N5235B
8
2
3
D10 R24
R10
4.99K
C12
4 6
R15
4
+15-A
Channel 1
LINK
2
VCT1
3
-
J2
11
-15
12K
1
R33
10.0K
6 7
5 6 1
A4A
10.0K
-15
39K D13
20.0K
D12
WIPER_1
3 2
8
OUTPUT 1-BAL
100pF m
NE5532
10uF 50V
220K
R34
2.2K
1M
4.99K
6mA
-15 +15
R65
R36 D20
1K
R40
220K
R8
ATTACK-1
Slow Fast
4
10.0K
+OUT-1
R16
10.0K
1M
R11
SW2B SW2A
C17
47uF 25V
1
(Tube inverts)
-OUT-1 E
10uF 50V
A2A
C23
R23
A4C
2.2K 2.2uF 50V
Output Input
CH1_BUFF 1 2 3 4 5 6 1
-15
NE5532
10.0K
TL074
D24
13 14
2N4403
A4D
12
Q4
100K
4.99K 2N4403
Q2 R19
SW1B
5
R3 R1
C2 R5
1uF 50V
R6
-15
1M
R12
C13
20.0K 10.0K
R4 R2 D3
22uF 35V
20.0K
Slow Fast SW3B
10.0K 10.0K
62K
4.99K
P5 P4
+
TL074
CV_LINK_1
SW1A
METER OUT-1
6 7
METER-1
+45V
-
RELEASE-1
THR_DRIVE_2
2 3
D1
-15 1
5
SW3A
TL072
A1A
D
A1B
THRESHOLD-2
VR5
-20dBm 0dBm
Ch2 POTS PCB
RATIO-2
4:1 100:1
10uF 50V
C54
100uF 63V
C50 R96
10.0K
+15
TL072
10uF 50V
220K
V2A V2B R97
7
10K 15C
OUTPUT-2
+12 0dB
+20dBm
R117
R88
C46
2
20.0K 10.0K C45
R90
12AT7
100K
C52
TUBE_OUT_2
Channel 2
NE5532
5 6
100
PL4
PL3
2:1 VR6
VR7
330pF m 47uF 25V
C47
V2-Filament
R95
10uF 50V
+15V
A10B
20.0K
Q7
47uF 25V
7
R142
4.99K
R91
MPSA29
R140
C67
10.0K
1N5235B x 2
D30 D27 R112 D28
DET_LINK_2
R100 R141 R129
1M
R114
D32
1M
R94
1K
R130
220K
R137
ATTACK-2
Slow Fast
4
4.99K
6mA
-15 +15
R99
10.0K 10.0K
+OUT-2
R136
C
SW7B SW7A
C64
47uF 25V
1
(Tube inverts)
-OUT-2
10uF 50V 2.2K
C60
A10A
C65
R132
D31 R108 Q8
4.99K
4 6
NE5532
-15
10.0K
TL074
R127
A9C
2.2uF 50V
Output Input
CH2_BUFF
4.99K
2N4403
-15 CV_LINK_2
SW6B
5
R103
C55 R106 R115
1uF 50V
R105
100K
D33
13 12 CV_OUT_2
20.0K
2
1
R126
A9D
1M
C62
10.0K
R107
R104
10.0K
D25
62K
-15 1
4.99K
P11
+
3
22uF 35V
SW6A
METER OUT-2
P10 A6A
+15
10.0K
D26
6 7
-
3
B
R69
R70
750
220
220
130
100
75
Slow Fast
4 6 1
SW8B
5
TL072
RELEASE-2
2
5
A6B
TL072
3 +15 +15 3
SW8A
-
+
-
+ -15
+
-15
-
R86
+
<- All Comparators LM339AN
+15
C49 R87
300
LED3
R R R R R R R R R Y
47uF 25V
R
R
R
R
R
R
R
R
R
Y
2.2K
Q6
Applied Research & Technology, Inc. 215 Tremont Street C Rochester, NY 14608
Phone: (716) 436-2720 Fax: (716) 436-3942
Size Sheet # 1 of
A
-4
-2
-1
0
2N4403 R89 10.0K
C48
47uF 25V -15
C
A->B @ 133% C:\\SERVER\D\PRODUCTS\212\212-1-1.SCH
2
Drawn By
D. Pearce
Print Date 11:04:06
Rev.
11-Oct-2002
E
Pro 2-Ch Tube/Vactrol Levelar - Main PCB
1st Use:
5 6 7
212 - Pro VLA
Dwg #
212-4001-101
8