Ampeg GVT15 Schematic
78
6
5
34
2
1
PLATE_VT1
[1]
E
R57
33K
1W
C38
4.7UF
63V
[1]
R53
100K
1W
C41
.022
400V
6
7
VJ3-B
9P CER DTRI
8
R48
1K5
1W
STACK1_SEND
[2]
STACK1_RETURN
[2]
D
BRKT ANG 6-32X.037THK STL
712-020-00
HDW1
INPUT
T
R
S
J25
J24-1
J24-2
J24-3
J24-4
J23-1
J23-2
J23-3
J23-4
MT1
R56
1M
1W
CHASSIS GND @ INPUT
D
[1]
R46
100K
1W
C33
0.1uF
630V
R50
33K
1W
4.7UF
1
2
3
C42
63V
R58
1K5
1W
VJ3-A
9P CER DTRI
STACK2_SEND
[2]
STACK2_RETURN
[2]
R34
47K
1W
C21
0.1uF
630V
C30
.022uF
400V
6
7
VJ4-B
R36
1M
1W
R30
1M
1W
8
9P CER DTRI
R33
1K5
1W
VJ4-A
3
9P CER DTRI
2
1
400V
C61
100K
47pF
R24
1W
R25
100K
C13
0.1uF
630V
R14
470K
1W
C
[1]
R15
C14
0.1uF
630V
470K
1W
1W
R23
1K5
1W
R17
470
5W
R19
1K5
1W
3
3
8P CER PENT
851
C9
100UF
50V
VJ2-A
8P CER PENT
851
VJ1-A
4
4
SCREEN_VT1
PLATE_VT2
[1]
SCREEN_VT2
[1]
[1]
PRIMARY
J10-1
J10-2 J10-5
J10-3
PINOUT
J10-6
J10-4
4
1
5
2
6
3
PRIMARY
OUTPUT
TRANSFORMER
A
[1]
16 OHM
PINOUT
8 OHM
SECONDARY
4 OHM
COMMON
8_OHM
16_OHM
432
1
SECONDARY
J28-2
J28-1
J28-4
J28-3
COMMON
4_OHM
T
R
16 OHM
D
S
J4
T
R
8 OHM
S
J5
T
8 OHM
R
S
J6
T
R
4 OHM
S
.1UF
.1UF
C27
47uF
450V
C8
C5
B
[1]
R28
470
5W
C10
100UF
50V
C37
47UF
50V
47UF
50V
C
[1]
R27
10K
2W
C26
47uF
450V
D10
1N4744
15V
VREF
C36
D9
1N4744
15V
[2]
D
[1]
R38
10K
2W
C25
22uF
450V
R49
470
.25W
Q1
2N4401
APPROVALS DATE
DRAWN:
TH and RMR
CHECKED:
NP ENG:
MATERIAL:
MFG:
MFG ENG:
ISSUED:
3
R47
10K
.25W
C40
22uF
450V
E
[1]
R43
10K
2W
R55
1K
.25W
Q2
2N4401
03 FEB 2011
C39
22uF
450V
C43
0.1uF
630V
J17-1
TO FP LED (BICOLOR)
J17-2
A
[1]
R51
1M
.25W
R54
2K2
.25 W
[1,2]V_RELAY
Technologies Inc.
16220 WOOD-RED RD NE WOODINVILLE, WA 98072
SCHEMATIC, AMPEG GVT15
SIZE
D
DWG FILE:
SCALE:
NONE
DWG. NO.
2036322-XX
2
712-021-01
RV1
C
RVT CL END .125X.062-.125
712-021-01
RV2
RVT CL END .125X.062-.125
B
MAIN FUSE
TUBE TYPE NOTES:
PREAMP = ECC83 / 12AX7
PHASE SPLITTER = ECC83 / 12AX7
POWER = 6V6 (2)
POWER TRANSFORMER
TWISTED TRIPLE
BRN
240 VAC
6.3 VAC
BLU
120 VAC
HV AC CT ORN
RELAY AC YEL
RELAY AC YEL
HV AC ! RED
HV AC ! RED
J14
J15
J13
J20
J31
R12
470
4
5W
R13
470
13
5W
+
1
D2
1N4007
-
16
J21
STDBY 1 MID
STDBY 2 MID
J16
FULL POWER
1/2 POWER
SCREEN_VT1
V_RELAY
STDBY 1 TOP
STDBY 2 BOT
STDBY 2 TOP
6
8
11
9
K2
STANDBY
[1] PLATE_VT1
[1] B
[1] PLATE_VT2
B
C23
0.01UF
1000V
D7
1N4007
F3
.5A
F2
.5A
F4
T4A
D11
15A
1N4007
C15
10,000UF
16V
D5
C18
0.01UF
1000V
[1,2]
V_RELAY
C22
0.01UF
1000V
D6
1N4007
1N4007
C17
0.01UF
1000V
D4
R35
220K
2W
47uF
450V
C19
[1]
J22
J19
J18
R18
470
5W
[1]
[1]SCREEN_VT2
[1,2]
A
[1]
R37
4K7
3W
R39
4K7
3W
R45
4K7
3W
R52
4K7
3W
IEC
POWER
TWISTED PAIR
400-060-00
FC1
FUSE CLIP PCMT 5MM DIA
400-060-00
FC2
FUSE CLIP PCMT 5MM DIA
400-060-00
FC3
FUSE CLIP PCMT 5MM DIA
400-060-00
FC4
A
FUSE CLIP PCMT 5MM DIA
400-060-00
FC5
FUSE CLIP PCMT 5MM DIA
400-060-00
FC6
FUSE CLIP PCMT 5MM DIA
400-060-00
FC7
FUSE CLIP PCMT 5MM DIA
400-060-00
FC8
FUSE CLIP PCMT 5MM DIA
TWISTED PAIR
8 7
WHT
100 VAC
BLK
COMMON
TWISTED PAIR
6.3 VAC
J11
FIL AC GRN
J12
FIL AC GRN
ROUTE AS
DIFF PAIR
6
U3-C
4558
C67
U2-C
.1UF
8
TL072CN
C68
4
.1UF
4
6V6FIL1
6V6FIL2
VJ1-B
8P CER PENT
VJ2-B
8P CER PENT
[1]
C11
10,000UF
16V
[1]
72
6V6FIL1
72
VJ3-C
9P CER DTRI
4
9
[1]
5
VJ4-C
9P CER DTRI
4
9
5
R16
470
.25W
D8
R21
15A
470
F1
T4A
.25W
6V6FIL2
[1]
5
C24
.1UF
8
4
C
2010-2011 LOUD TECHNOLOGIES INC.
C28
.1UF
TL072CN
SCH1
PCB1
8
U1-C
4
2036322-XX
SCHEMATIC PCB ASSY, AMPEG GVT15
2036324-00
PCB FAB, AMPEG GVT15
ALL RIGHTS RESERVED
THE INFORMATION CONTAINED HEREIN
IS PROPRIETARY AND CONFIDENTIAL
PROPERTY OF LOUD TECHNOLOGIES INC.
T
R
S
SHEET
J7
4 OHM
J8
C
B
A
REV.
201
OF
1
1
1
7
8
6
5
34
2
1
D
R79
220K
1W
C53
0.0047UF
400V
330pF
630V
R69
100K
1W
J9-8
100K
.25W
11
J27-8
J9-7
J27-7
J9-6
J27-6
J9-5
J27-5
J9-4
J27-4
J9-3
J27-3
J9-2
J27-2
J9-1
J27-1
R26
Dry
6
8
9
K3
R97
120K
4
.25W
13
+
1
1N4007
-
16
C35
1uF
100V
D3
FPGND
STACK2_RETURN
C16
1uF
100V
V_RELAY
REVERB_CTRL
[1]
[1,2]
STACK1_SEND
STACK1_RETURN
STACK2_SEND
[1]
[1]
[1]
C
R29
Wet
100K
.25W
ACTIVE
REVERB
BYPASS
R70
100K
C51
.01
400V
FPGND
R93
10K
.25W
R92
1M
.25W
[2]
B
R78
100K
1W
FPGND
R82 47K
1W
R83
100K
1W
FPGND
R20
10
1W
C57
220PF
250VC52
R74
1M-A
MIDRANGE
800 Hz
C54
3
CW
2
R72
1M-A
GAIN
1
3
1
FPGND
47PF
1000V
CW
2
R80
100K
1W
FPGND
1W
R71
220K
1W
R75
1M-A
BASS
R84
22K
1W
3
1
FPGND
2
C58
.001
400V
CW
C59
.01
400V
"Mr. Clean" FRONT PANEL
1Hz
+6 dB
5
6
VREF
[1,2]
48kHz
U2-B
TL072CN
7
C20 330pF
630V
R89 10K
.25W
R94
10K
.25W
-20 dB
R31
100K
.25W
R32
10K
.25W
150 Hz
Current Drive
U3-B
4558
5
+
7
6
-
R90
4K7
.25W
R91
.25W
22uF
U3-A
R95
4558
3
+
10
1
2
-
.25W
R96
10
.25W
47
C64
63V
C66
.022
100V
2
1
REVERB
J26
RED
R81
120K
1W
4700pF
C56
470pF
500V
R73
1M-A
TREBLE
C55
500V
3
CW
2
R76
1M-A
1
VOLUME
C60
47PF
1000V
3
CW
2
1
FPGNDFPGND
R77
250KB
REVERB
3
1
FPGND
CW
2
160Hz 10kHz
+37 dB
C29
R44
22K
.25W
1uF
100V
C31
0.0022uF
VREF
[1,2]
R40
1M
.25W
J35
WHT
2
1
RETURNSEND
R41
1K
.25W
C65
1uF
100V
U2-A
1
220pF
500V
68K
C34
1uF
100V
TL072CN
3
2
C32
R42
0.25W
D
C
B
6
4
ACTIVE
EFFECTS LOOP
BYPASS
8
11
13
9
+
1
D1
1N4007
K1
-
16
V_RELAY
FX_CTRL
100V
[1,2]
[2]
C7
1uF
A
R10
10K
.25W
.25W
R9
1M
1Hz
-0.2 dB
U1-A
TL072CN
3
2
48kHz
1
[1,2]VREF
22UF
1Hz
48kHz
10K
.25W
R5
+12.2 dB
U1-B
TL072CN
5
7
6
C6
100PF
500V
R7
33K
.25W
2K7
.25W
C4
R8
1uF
100V
R6
10K
.25W
Technologies Inc.
A
16220 WOOD-RED RD NE WOODINVILLE, WA 98072
-12dB
C1
100PF
500V
C2
1uF
100V
VREF
REVERB_CTRL
FX_CTRL
R2
220K
.25W
[1,2]
[2]
[2]
C3
R4
1K
.25W
R3
330
R11
.25W
1K
.25W
SEND
T
R
S
EFFECTS
J1
RETURN
T
R
J2
10K
.25W
R1
S
T
J3
FOOTSWITCH
R
S
SCHEMATIC, AMPEG GVT15
8 7
SIZE
SCALE:
NONE
MT2
6
5
4 3
D
DWG FILE:
2
DWG. NO.
2036322-XX
SHEET
1
REV.
201
OF
22
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