SSSeeerrrvviiiccceee MMMaannuuuaaalll v an

AD15/30VT

CONTENTS Circuit Diagram: Page 2-4 Block Diagram: Page 5-6 Parts List: Page: 7-11

2nd Edition Issued date: December 9th 2004

Issued by: KORG INC.

1 2 3 4 5 6 7 8

A

B

C

D

87654321

D

C

B

A

J1

PHONEJACK STEREO SW

12

3

4

8

IC1AUPC4570G2

5

67

IC1BUPC4570G2

12

3

4

8

IC2ANJM4556M

1

2

3

VR

210

kB(1

1clic

k)

1

2

3

VR

310

kB(1

1clic

k)

1

2

3

VR410kB

1

2

3

VR510kB

1

2

3

VR610kB

1

2

3

VR710kB

1

2

3

VR810kB

1

2

3

VR910kB

1

2

3

VR110kB

GND 1

NC 2

DA13 3

DA12 4

DA11 5

DA10 6

DA9 7

DA8 8

DA7 9

DA6 10

DA5 11

DA4 12

DA3 13

DA2 14

DA1 15

DA0 16

D15 17

D14 18

D13 19

D12 20

D11 21

D10 22

D9 23

D8 24

EVdd 25

GND 26

D7 27

D6 28

D5 29

D4 30

D3 31

D2 32

D1 33

D0 34

IVdd 35

GND 36

SI137

SIEN138

SCK139

SIAK140

SO141

SORQ142

SOEN143

SOEN244

SO245

SCK246

SIEN247

SI248

NC49

EVdd 50

GND 51

P352

P253

P154

P055

HD756

HD657

HD558

HD459

HD360

HD261

HD162

HD063

EVdd 64

GND 65

HRE66

HWE67

HCS68

HRD69

HWR70

HA071

HA172

CLKOUT73 CLKIN74

EVdd 75

GND 76

IVdd 77

GND 78

TDO79

TICE80

TCK81

TDI82

TMS83

TRST84

IVdd 85

GND 86

RESET87

INT4/WAKEUP88

INT389

INT290

INT191

HOLDRQ92

HOLDAK93

BSTB 94

NU 95

MWR 96

MRD 97

I.C. 98

X/Y 99

EVdd 100

IC5

UPD77112

P62/AN21

P61/AN12

P60/AN03

P57/INT3 4

P56/PWM 5

P55/CNTR1 6

P54/CNTR0 7

P53/S-RDY2 8

P52/S-CLK2 9

P51/S-OUT2 10

P50/S-IN2 11

P47/S-RDY1/CNTR2 12P46/S-CLK1 13P45/TxD1 14P44/RxD1 15P43/INT2 16P42/INT1 17

CNVss 18

RESET 19

P41/INT00/XCIN 20P40/INT40/XCOUT 21

XIN 22XOUT 23

Vss 24

P27(LED7)25

P26(LED6)26

P25(LED5)27

P24(LED4)28

P23(LED3)29

P22(LED2)30

P21(LED1)31

P20(LED0)32

P1733

P1634

P1535

P1436

P1337

P1238

P11/INT0139

P10/INT4140

P07/AN15 41P04/AN14 42P05/AN13 43P04/AN12 44P03/AN1145

P02/AN1046

P01/AN947

P00/AN848

P37/S-RDY3 49

P36/S-CLK3 50

P35/TxD3 51

P34/RxD3 52

P3353 P3254 P31/DA255 P30/DA156

Vcc 57Vref 58

AVss 59

P67/AN760

P66/AN661

P65/AN562

P64/AN463

P63/AN364

IC4

M3803

A141

A122

A73

A64

A55

A46

A37

A28

A19

A010 D0 11D1 12D2 13

GND 14

D3 15D4 16D5 17D6 18D7 19

CS20

A1021

OE22

A1123

A924

A825

A1326

WE27

Vcc 28

IC6

UPD43256BGU-B12(SRAM256Kbit)

VOX AD15VT & AD30VT

11

22

33

CN1

EH-3

1 1

2 2

3 3

CN2

EH-3

C10.1uF

1

2

3

WD1DA204K

INPUT JACK PCB

FB1

FB-M

R1

10k

R131M

+15V+15V

-15V-15V

C3010pF

R19

15k

R26470

R18 47k

C3110pF

R27 470

C35NU

C34NU

C70.1uFC46

220uF/16V

C49100uF/16V

C4710uF/16V

C80.1uF

+3VD

R29NU

+3VA

256FS1FS

64FS

SO2

SI2

C9 0.1uF

R280

256FS1FS

64FS

SO2

SI2

SYS_RESSYS_RES

R32100k

R21

1.8k

R53

10k

R2

1k

R22 1k

C51

47pF

C5222pF

C50

1uF/50V

L1

BLM21P600SG

L2 BLM21P600SG

C10 0.1uF

+15V

-15VC60.1uF

C50.1uF

C120.1uF

C110.1uF

Q2KTC2875

MASTER

To POWER PCB

5

67

IC2BNJM4556M

Q1KTA2014

R33100k

R5422k

C4810uF/16V

C3100uF/6.3V

1

2

3

WD3DA204K

+3VA

NC 1

IN 2

NC 3

GND 4C5 OUT6 POW7 NC8IC7

M51957BFP

HREHWEHCSHRDHWRHA0

R79 47kR80 47kR83 47kR84 47k

+3VD

M_CLK M_CLK

1FS 1FS4FS 4FS

+3VDR7847k C44

0.01uF

R42 100kR43 100kR44 100kR48 100kR45 100kR46 100kR49 100kR47 100k

DD0DD1DD2DD3DD4DD5DD6DD7

DD0DD1DD2DD3DD4DD5DD6DD7

C160.1uF

C170.1uF

C180.1uF

C240.1uF

C250.1uF

C260.1uF

C270.1uF

C280.1uF

C190.1uF

+3VD

+3VD

NC

NC

NC

NC

NC

NC

NC NC

+3VD

VIN 1

VSS 2

CE 3NC4

VOUT5IC9

NJM2872AF

C200.1uF

+3VD

NC

DSP_RES DSP_RES

DSP_RESDSP_RES

SYS_RES SYS_RES

SYS_RESSYS_RES

M_CLKM_CLK

+3VD

C130.1uF

C140.1uF

+3VD

NCNCNC

LED1RED(3mm)

LED2RED(3mm)

LED3RED(3mm)

LED4RED(3mm)

LED5RED(3mm)

TP1TP

SW1PUSH SW

SW2PUSH SW

SW3PUSH SW

SW4PUSH SW

R62 100R58 100R61 100R57 100R60 100

R3710k

R3810k

R3910k

R4010k

R31k

R41k

R51k

R61k

R71k

R81k

R91k

R101k

C360.01uF

C370.01uF

C380.01uF

C390.01uF

C400.01uF

C410.01uF

C420.01uF

C430.01uF

FOOT_SW_L FOOT_SW_L

DGNDAGND

FOOT_SW_LFOOT_SW_L

R35100k

+3VD

1 1

2 2

3 3

4 4

5 5

6 6

CN4

EH-6R82

47k

R75 100

1FS1FS

4FS 4FS

256FS256FS

64FS64FS

64FS64FS

64FS 64FSSO2

SI2

SO2

SI2

HREHWE

HCSHRDHWR

HA0

R36100k

R56

100F_OEF_OE

F_OE F_OE

+3VD

RXD

RXD RXD

RXD

TXD

TXD

TXD

TXD

R41 100kC15

0.1uF

+3VD

R8147k

R65 100

R66 100F_BUSY

F_BUSY

F_BUSY

F_BUSY

F_SCK

F_SCKF_SCK

F_SCK

R8512k

R2510k

R69

100

NC

NC

NC

+3VD

F_SYS_RES

F_SYS_RES F_SYS_RES

F_SYS_RES

F_VPP

F_VPP F_VPP

F_VPP

C450.01uF R24

10k

+3VD

C210.1uF

1 2IC10A

HD74LVU04A

3 4

IC10B

HD74LVU04A 9 8IC10D

HD74LVU04A5 6

IC10C

HD74LVU04A

13 12IC10F

HD74LVU04A

11 10IC10E

HD74LVU04A

C5522pF

C5622pF

R15 1M

R68100

X2

11.2896MHz

Q12 1

Q6 2Q5 3

Q7 4

Q4 5Q3 6Q2 7

GND8

Q1 9CLK10

RESET11

Q9 12Q8 13

Q10 14

Q11 15VCC16

IC11

HD74LV4040A

NCNCNC

NC

NCNCNCNC

R71 100

R72 100

R70 100

R74 100

R73 100

NC

4FS4FS

+3VD

C230.1uF

HD74LVU04A

14

7

IC10

12345678910

CN6

EH-10

R76 100R77 100

R52100k

C290.1uF

+3VD

NC

PRESET CH1 CH2MANUAL TAP

+3VD

NCNC

+3VD

PRESET WRITECH SELECT TAP

AM

P T

YP

E

EF

FE

CT

TY

PE

FX

DE

PT

H

GA

IN

TR

EB

LE

MID

DL

E

BA

SS

LE

VE

LNCNCNC

R59 100

R63 100A/AB

RES_FRQ

A/ABRES_FRQ

A/ABRES_FRQ

RES_FRQA/AB

MAIN PCB

1.51KLM-2462, 2463

+3VD +3VA

C58100uF/6.3V

C57100uF/6.3V

+15V

-15V

C59100uF/25VC60100uF/25V

AGND

DGND

DGND

From POWER PCB

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

CN5

EH-8

AGND

2.5V

AGND

AGND

AGND

AGND

AGND

AGND

AGND

AGND

AGND

AGND

AGND

AGND AGND

AGND

DGND

DGND

DGND

DGND

DGND

DGND

DGND

DGND

DGND

DGND

DGND DGND

DGND

DGND

DGND

DGND

DGNDDGND

DGND

DGNDDGND DGND

DGND

DGNDDGNDDGND

11

22

33

44

55

66

77

88

99

CN3

EH-9

PHONE_DT PHONE_DT

R64

100

PHONE_DTPHONE_DT

NCNC

2004.02.27

KLM-2463

R31NU

R30NU

R50100k

R51100k

+3VD+3VD

DGNDDGND

X1

8MHz C54

22pF

C53

22pF

R67100

R14 1MM_CLK

R2310k

M_CLK

R87

4.7(1/8W)

NC

Title

NumberSize Revision

Date Sheet of

A2

1/2

RIN1

LIN2

VSS3

VA4

VD5

DEMO06

DEMO17

SDTO8

ROUT 16

LOUT 15

VCOM 14

PDN 13

BCLK 12

MCLK 11

LRCLK 10

SDTI 9

IC3

AK4552VT

AGND

NU : No Use

NC : No Connect

1

2

3WD6DA204K

1

2

3WD5DA204K

R11 2.7k

R88 3.3k

R121.2k

R8912k

C6110uF/16V

C210uF/16V

NC

NC

AGND

AGND

AGND

AGND

C62

47uF/6.3V

R91 0

R90

10(1/8W)

V_VOL

G_VOL

V_VOL

G_VOL

C63

0.1uF

V_VOL

G_VOL

V_VOL

G_VOL

R92 0

DGND

NC

C640.1uF

LED6

RED(3mm)

R34 100FX BYPASS

SW5PUSH SW

SW6PUSH SW

MANUAL FX BYPASS

R1610k

R2010k

R55100k

NC1

VCC2

CS3

SK4 DI 5DO 6GND 7NC 8IC8

AK93C45AF

C32

10uF/16V

C33

10uF/16V

FOOT_SW_R

R17100k

+3VD

FOOT_SW_R

C40.001uF

L3

BLM21P600SG

C221uF/50V

R86

0

R93

100

C69NU

C670.1uF

C660.1uF

Shassis GND Shassis GND

C680.1uF

C650.1uF

Shassis GND

DGND

ceramic

FOOT_SW_R

FOOT_SW_R

C700.01uF

C710.01uF

DGND

V OUT

NS BP

V INGND

CONTROL

C720.1uF

1 2 3 4 5 6 7 8

A

B

C

D

87654321

D

C

B

A

Q1KTC3198GR

Q2KTC3198GR

SP18ohm

C1100uF/35V

C3247uF/25V

C9

1uF/50V

C11

NU

+15V

C350.22uF

C2622uF/35V

C2722uF/35V

C29

220uF/35V

C30

220uF/35V

+Vcc(+30V)

-Vss(-30V)

C43

10uF/25V

+15V

C42

10uF/25V-15V

C16

0.1uF

C17

0.1uF

Q3KTC3198

A/AB

C31

10uF/16V

C8

1uF/50V

C10

1uF/50V

Max

Max

Min

Min

2

3 4 51

BK

BG

BP

9B

H

AH

CH

V1A12AX7

7

8

6

AG

AP

AK V1B

12AX7

-15V

-15V

-15V

-15V

-15V

+15V

Q4KTA1266

12

3

4

8

IC2ANJM2082D

5

67

IC2BNJM2082D

12

3

4

8

IC3ANJM2082D

5

67

IC3BNJM2082D

R14

2.2k

+3VD

R9

22k

R4047k

-15V

+3VD

R2210k

R10

10k

C410.01uF

PHONE / LINE OUT123456

J2

PHONE_JACK_SW

C120.001uF

C1347pF

R19

470k

R30

68k

R21k

C30.1uF

KLM-2464 1.61

VOX

AGNDDGND

J1

PHONE_JACK STEREO

FOOT SW

R6910k

C500.1uF

HEATER1HEATER2

2004.2.6

9

10 11

IN3

D3 S3

IC1CDG211

IN1

D1 S1

1

2 3

IC1ADG211

16

15 14

IN2

D2 S2

IC1BDG211

8

76

IN4

D4S4

IC1DDG211

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

CN1

EH-9

RES_FRQ

POWER LEVEL

0 : ON1 : OFF

0 : ON1 : OFF

0 : ON1 : OFF

0 : ON1 : OFF

V+

V-

GND

13

5

4

12

DG211

IC1

C150.1uF

C14

0.1uF

R722k

-15V

+15V

C60.1uF

C50.1uF

11

22

CN2

VH-210 INCH

R11k

R54.7k

R64.7k

R38

47k

R3

4.7k

R3933k R4

4.7k

R20

220

R23

47k R2433k

R27

47k R2833k

R26

2.2k R810k

R41330

R425.6k

R32

330k

R31

330k

R33

330k

R34

330k

R35

3.3k

R36

3.3k

R434.7k

R15

2.2k

R18

2.2k

R17

2.2k

R48

0.47(3W)

R4610 (1W)

+3VD

3

2

1

VR1A100kB

3

2

1

VR1B100kB

R21

220

R2510k

R441.8k

R452.2k

R29 22k

+

C34 NU

+ C3347uF/35V

Title

Size Number Revision

Date Sheet of2/2

A2

AD30VT POWER PCB

+3VD

3

1

2D1KBP206G

3

4

5

C36

2200uF/50V

C37

2200uF/50V

C180.1uF

C190.1uF

1 3

2

V V

GNDIN OUT

IC57815

C200.1uF

C210.1uF

C220.1uF

C230.1uF

D21N4002

D51N4002

C38100uF/25V

C39100uF/25V

4

D7SHSW04M

6

7

C452200uF/16V

1 3

2

V V

GNDIN OUT

IC7BA033T

C240.1uF

C250.1uF

D61N4002

C40100uF/6.3V

5

8

9

HEATER1

HEATER2

1

10

2

R49

330(1W)

R50

330(1W)

R51

100(1W)

R52

100(1W)

1 2

SW1SW-SPST

F1

FUSE

F2

FUSE

1

OUT 3IN2GND

IC67915

R54470

LED1RED(5mm)

11

22

33

CN4

EH-3

1 1

2 2

3 3

CN5

EH-3

POWER

POWER 11

22

33

44

55

66

77

88

CN3

EH-8

R47 10 (1W)

C44 0.22uF

D4 1N4002

D3 1N4002

Chassis GND Circuit GND

Chassis GND

NC FOOT_ SW_R

+VCC(+30V)

-VSS(-30V)-15V

+15V

+3VD

R55

0

AGND

DGND

NC : No Connect

D141N4148

D151N4148

D81N4148

D91N4148

FB1

FB-M C4622pF

LINE OUT

PRE OUT

PHONE_DT

PHONE_DT

LINE OUT

PRE OUT

FOOT_SW_LFOOT_SW_L

PHONE_DT

LINE OUT

PRE OUT

LINE OUT

PRE OUT

PHONE_DT

FOOT_ SW_R

R5610k

HEATER1

HEATER2

HEATER1HEATER2

From MAIN PCB

To MAIN PCB

Q5KTC2874

R57

1k

C47 NU

R58470

R591k

POWER SUPPLY BLOCK

POWER BLOCK

C48100uF/25V

R6147(1W)

Q7KTA1266

Q6KTC3198

R6010k

+3VD

R37100k

R5310k

D121N4002

D131N4002

C490.22uF/50V

Q8

KTC3198

R64

22k R6222k

R65

10k

+3VD

Q9KTC3198

R632.2k

R6716k

0 : A1 : AB

VL

+3VD

R7047k

C53

47uF/35V

-15V

+15V

C28

10uF/35VR66220k

R683.3k

ADJUSTMENT RESISTOR

R1110k

C70.1uF

+3VD

D101N4148

D111N4148

FOOT_SW_L FOOT_SW_L

FOOT_SW_RFOOT_SW_R

FB2

FB-M C5522pF

C54100uF/25V

R7347(1W)

-15V

C2

4.7uF/50V

C410uF/16V

C56

10uF/16V

3

14

10

9

7

8

IC4 LM3886

R1222k

C63

0.1uF ceramic

C640.1uF ceramic

Shassis GND

Shassis GND

C570.1uF

C580.1uF

C590.1uF

C600.1uF

C610.1uF

C620.1uF

Shassis GND

Shassis GND

Shassis GND

Shassis GND

ceramic ceramic ceramic ceramic

ceramic ceramic

ceramic

ceramic

ceramic

ceramicceramic

ceramic

ceramic ceramic

ceramic

ceramic

ceramic

ceramic

ceramic

ceramic

ceramic

ceramic

ceramic

ceramic

ceramic

ceramic

ceramic

ceramic

C65NU

C51

3pF ceramic

NU : No Use

R16

0

R130

1,5

C520.1uF

C6610pF

ceramic

ceramic

C67

3.3uF/50V

C68

3.3uF/50V

Vishay Siliconix

R71 47k_F(1%)

R72

47k_F(1%)

(Delete=6dB up)

If the output power is not high enough, please delete both R67 and R68.

Even doing above modify, if the output power is not go to correct level, please exchange the TUBE itself.

1 2 3 4 5 6 7 8

A

B

C

D

87654321

D

C

B

A

Q1KTC3198GR

Q2KTC3198GR

SP18ohm

C1100uF/35V

C3247uF/25V

C9

1uF/50V

C11

NU

+15V

C35

0.22uF

C2622uF/35V

C2722uF/35V

C29

220uF/35V

C30

220uF/35V

+Vcc(+20V)

-Vss(-20V)

C43

10uF/25V

+15V

C42

10uF/25V-15V

C16

0.1uF

C17

0.1uF

Q3KTC3198

A/AB

C31

10uF/16V

C8

1uF/50V

C10

1uF/50V

2

3 4 51

BK

BG

BP

9B

H

AH

CH

V1A12AX7

7

8

6

AG

AP

AK V1B

12AX7

-15V

-15V

-15V

-15V

-15V

+15V

Q4KTA1266

12

3

4

8

IC2ANJM2082D

5

67

IC2BNJM2082D

12

3

4

8

IC3ANJM2082D

5

67

IC3BNJM2082D

R14

7.5k

+3VD

R9

22k

R4047k

-15V

+3VD

R2210k

R10

10k

C410.01uF

PHONE / LINE OUT123456

J2

PHONE_JACK_SW

C120.001uF

C1347pF

R19

470k

R30

68k

R21k

C30.1uF

KLM-2464 0.6

VOX

AGNDDGND

J1

PHONE_JACK STEREO

FOOT SW

R6910k

C500.1uF

HEATER1HEATER2

2004.1.9

9

10 11

IN3

D3 S3

IC1CDG211

IN1

D1 S1

1

2 3

IC1ADG211

16

15 14

IN2

D2 S2

IC1BDG211

8

76

IN4

D4S4

IC1DDG211

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

CN1

EH-9

RES_FRQ 0 : ON1 : OFF

0 : ON1 : OFF

0 : ON1 : OFF

0 : ON1 : OFF

V+

V-

GND

13

5

4

12

DG211

IC1

C150.1uF

C14

0.1uF

R722k

-15V

+15V

C60.1uF

C50.1uF

11

22

CN2

VH-28 INCH

R11k

R54.7k

R64.7k

R38

47k

R34.7k

R3933k R4

4.7k

R20

220

R23

15k R2433k

R27

15k R2833k

R26

2.2k R810k

R41330

R425.6k

R32

330k

R31

330k

R33

330k

R34

330k

R35

3.3k

R36

3.3k

R433.3k

R15

100k

R18

100k

R17

7.5k

R48

0.47(3W)

R46

10 (1W)

+3VD

R21

220

R2510k

R441.2k

R451k

R29 160k

+

C34 NU

+

C3347uF/35V

Title

Size Number Revision

Date Sheet of2/2

A2

AD15VT POWER PCB

+3VD

3

1

2D1KBP206G

3

4

5

C36

2200uF/35V

C37

2200uF/35V

C180.1uF

C190.1uF

1 3

2

V V

GNDIN OUT

IC57815

C200.1uF

C210.1uF

C220.1uF

C230.1uF

D21N4002

D51N4002

C38470uF/25V

C39470uF/25V

4

D7SHSW04M

6

7

C452200uF/16V

1 3

2

V V

GNDIN OUT

IC7BA033T

C240.1uF

C250.1uF

D61N4002

C40100uF/6.3V

5

8

9

HEATER1

HEATER2

1

10

2

R49

33(1W)

R50

33(1W)

R51

100(1W)

R52

100(1W)

1 2

SW1SW-SPST

F1

FUSE

F2

FUSE

1

OUT 3IN2GND

IC67915

R54470

LED1RED(5mm)

11

22

33

CN4

EH-3

1 1

2 2

3 3

CN5

EH-3

POWER

POWER 11

22

33

44

55

66

77

88

CN3

EH-8

R47 10 (1W)

C44 0.22uF

D4 1N4002

D3 1N4002

Chassis GND Circuit GND

Chassis GND

NC FOOT_ SW_R

+VCC(+20V)

-VSS(-20V)-15V

+15V

+3VD

R55

0

AGND

DGND

NC : No Connect

D141N4148

D151N4148

D81N4148

D91N4148

FB1

FB-M C4622pF

LINE OUT

PRE OUT

PHONE_DT

PHONE_DT

LINE OUT

PRE OUT

FOOT_SW_LFOOT_SW_L

PHONE_DT

LINE OUT

PRE OUT

LINE OUT

PRE OUT

PHONE_DT

FOOT_ SW_R

R5610k

HEATER1

HEATER2

HEATER1HEATER2

From MAIN PCB

To MAIN PCB

Q5KTC2874

R57

1k

C47 NU R58 150k

R5910k

POWER SUPPLY BLOCK

POWER BLOCK

C48100uF/25V

R6147(1W)

Q7KTA1266

Q6KTC3198

R6010k

+3VD

R37100k

R5310k

D121N4002

D131N4002

C490.22uF/50V

Q8

KTC3198

R64

22k R6222k

R65

10k

+3VD

Q9KTC3198

R632.2k

R6718k

0 : A1 : AB

VL

+3VD

R7047k

C53

22uF/35V

-15V

+15V

C28

10uF/35VR66220k

R682.7k

ADJUSTMENT RESISTOR

R1110k

C70.1uF

+3VD

D101N4148

D111N4148

FOOT_SW_L FOOT_SW_L

FOOT_SW_RFOOT_SW_R

FB2

FB-M C5522pF

C54100uF/25V

R7347(1W)

-15V

C2

4.7uF/50V

C410uF/16V

C56

10uF/16V

C63

0.1uF ceramic

C640.1uF ceramic

Shassis GND

Shassis GND

C570.1uF

C580.1uF

C590.1uF

C600.1uF

C610.1uF

C620.1uF

Shassis GND

Shassis GND

Shassis GND

Shassis GND

ceramic ceramic ceramic ceramic

ceramic ceramic

ceramic

ceramic

ceramic

ceramicceramic

ceramic

ceramic ceramic

ceramic

ceramic

ceramic

ceramic

ceramic

ceramic

ceramic

ceramic

ceramic

ceramic

ceramic

ceramic

ceramic

ceramic

C65NU

C51

NU

NU : No Use

R16

0

R130

1

2

3

4

5

IC4LM1875

C520.1uF

C6610pF

ceramic

ceramic

C67

470uF/35V

C68

470uF/35V

Vishay Siliconix

C800.0056uF

C810.0056uF

C820.0068uF

R12 160k

R71 82k

R72 39k

R74 20k

R75 130k

R76 56k

R77 16k

R78 1.1k

Delete=6dB up

<---------A--------->A delete=5dB up

<---------B--------->A+B delete=10dB up

<---------C--------->A+B+C delete=15dB up

<---------D--------->A+B+C+D delete=20dB up

How to adjisut the output power (WATT)1. Delete R67 and R68 ->6dB UP2. Delete R74 and R78 ->11dB UP3. Delete R72 and R77 ->16dB UP4. Delete R71 and R76 ->21dB UP5. Delete R12 and R75 ->26dB UPPlease try to increase the power by above order(1-5).

Even doing above modification ,If POWER is not go to correct wattage, please exchange the TUBE itself.

AD15VTPART CODE PART NAME NOTE Q'TY

320001607 IC UPD77112GC-017-9EU PWB031205 1320011236 IC M3803-7M6H-094FP PWB031205 1324038005 IC TDA1308T PWB031205 1600006503 AC POWER CORD DC-627-J01 M.PART 100JP 1*V903010000 TR NPN KTC3198-GR PWB031209 6*V903010001 TR PNP KTA1266-GR PWB031209 2*V903010017 TRANSISTER KTA2014 PWB031205 1*V903010018 TRANSISTER KTC2875 PWB031205 1*V903010019 TRANSISTER KTC2874B PWB031209 1*V903111000 SILICON RECTIFIRE DIODE 1N4002 PWB031209 7*V903111002 SILICON SWITCHING DIODE 1N4148 PWB031209 6*V903111011 BRIDGE DIODE KBP206G PWB031209 1*V903111012 DOUBLE DIODE DA204K PWB031205 2*V903111013 BRIDGE RECTIFIER DIODE W04M PWB031209 1*V903120006 LED RED 3MM DLL-B5131Q-Y PWB031205 6*V903120008 LED DLL-50231 5MM PWB031209 1*V903200013 IC DP AMP NJM4556 PWB031205 1*V903200019 IC OP AMP NJM2068M PWB031205 1*V903200023 IC SRAM HY62WT08081E PWB031205 1*V903200024 IC RESET KIA7125FV PWB031205 1*V903200025 IC EEPROM AK93C45AF PWB031205 1*V903200026 IC DC/DC CON NJM2872AF PWB031205 1*V903200027 IC INVERTER 74LVU04DB PWB031205 1*V903200028 IC BINARY COUNTER 74LV4040A PWB031205 1*V903200029 IC OP AMP NJM2082D PWB031209 2*V903200030 IC POWER LM1875 PWB031209 1*V903200031 IC REGULATOR KA7815TU PWB031209 1*V903200032 IC REGULATOR KA7915TU PWB031209 1*V903200033 IC REGULATOR BA033T PWB031209 1*V903300009 FUSE CLIP 0751-0110 PWB031209 2*V903300011 FUSE TIMELAG 250V T1.6AL M.PART 100JP 1*V903300011 FUSE TIMELAG 250V T1.6AL M.PART 117EX 1*V903300011 FUSE TIMELAG 250V T1.6AL M.PART 117CN 1*V903300011 FUSE TIMELAG 250V T1.6AL M.PART 117US 1*V903300011 FUSE TIMELAG 250V T1.6AL M.PART 117US 1*V903300017 FUSE 250V T800MAL M.PART 230WG 1*V903300017 FUSE 250V T800MAL M.PART 240AU 1*V903300017 FUSE 250V T800MAL M.PART 230GE 1*V903300017 FUSE 250V T800MAL PWB031209 1*V903300017 FUSE 250V T800MAL M.PART 230FR 1*V903300017 FUSE 250V T800MAL M.PART 230UK 1*V903350001 CRYSTAL 8MHZ PWB031205 1*V903350002 CRYSTAL 11.2896MHZ PWB031205 1*V903620015 VR RV160-40-15S-B10K-CO PWB031205 7*V903620016 VR RV160-40-15S-B10K-C11 PWB031205 2*V904020001 AXIAL BEED CORE SAT2550L PWB031209 2*V904020001 AXIAL BEED CORE SAT2550L PWB031205 1*V904020003 CHIP INDUCTOR HH-1M2012-600 PWB031205 3*V904050024 POWER TRANSFORMER 100V=057-ADJ M.PART 100JP 1*V904050025 POWER TRANSFORMER 120V=057-ADU M.PART 117CN 1*V904050025 POWER TRANSFORMER 120V=057-ADU M.PART 117EX 1*V904050025 POWER TRANSFORMER 120V=057-ADU M.PART 117US 1*V904050026 POWER TRANSFORMER 230V=057-ADE M.PART 230FR 1

AD15VTPART CODE PART NAME NOTE Q'TY

*V904050026 POWER TRANSFORMER 230V=057-ADE M.PART 230GE 1*V904050026 POWER TRANSFORMER 230V=057-ADE M.PART 230WG 1*V904050026 POWER TRANSFORMER 230V=057-ADE M.PART 230UK 1*V904050027 POWER TRANSFORMER 240V=057ADEF M.PART 240AU 1*V904100107 LOUD SPEALKER 8-INCH M.PART 1*V904530005 ANALOG SW DG211 PWB031209 1*V904530014 POWER SWITCH APS1101 M.PART 1*V904530015 TACT SW ATS-1230B(K=9.5MM) PWB031205 6*V904540015 PHONE JACK (STEREO) APJ-8P-S PWB031209 2*V904540015 PHONE JACK (STEREO) APJ-8P-S PWB031205 1*V904700000 AC CONNECTOR SC-8F-21 M.PART 1*V904752012 FLAT WIRE AWG26 150MM WHT/BK9P PWB031209 1*V904752013 FLAT WIRE AWG26 210MM WHT/BK8P PWB031209 1*V904752014 FLAT WIRE AWG26 300MM WHT/BK2P PWB031209 1*V904753009 T205 RING WIRE AWG18 YL 150MM M.PART 1*V904753010 T250 RING WIRE AWG18 YL 200MM M.PART 1*V904753011 T205/250 WIRE AWG22 BK 150MM M.PART 1*V904753012 SHIELD WIRE AWG26 GRY 115MM PWB031205 1*V904753013 LEAD WIRE AWG22 150MM WHT PWB031209 1*V904753014 LEAD WIRE 205T AWG22 400MM WHT PWB031209 1*V904753015 LEAD WIRE 205T AWG22 520MM BK PWB031209 1*V904754002 EARTH RING TERMINAL AD15/30 PWB031205 1*V904754002 EARTH RING TERMINAL AD15/30 PWB031209 2*V904754003 POWER TERMINAL 250 AD15 PWB031209 8*V904754004 PVC TUBE PHI 3.5 150MM PWB031209 1*V904754005 HEAT TUBE 20MM (6 PHI) PWB031209 3*V904754006 HEAT TUBE 25MM (6 PHI) PWB031209 4*V904755001 WAFER GIL-S-3P-S2TS ANGLE PWB031205 1*V905000001 TUBE SOCKET VT9-PT-2 PWB031209 1*V905000002 VACUUME TUBE 12AX7WA M.PART 1*V906000104 AC POWER CORD KKP-30 SVT(120V) M.PART 117EX 1*V906000104 AC POWER CORD KKP-30 SVT(120V) M.PART 117CN 1*V906000104 AC POWER CORD KKP-30 SVT(120V) M.PART 117US 1*V906000105 AC POWER CORD KKP-4819R(230V) M.PART 230GE 1*V906000105 AC POWER CORD KKP-4819R(230V) M.PART 230WG 1*V906000105 AC POWER CORD KKP-4819R(230V) M.PART 230FR 1*V906000106 AC POWER CORD KKP650(230UK) M.PART 230UK 1*V906000107 AC POWER CORD KKP550(240AU) M.PART 230AU 1*V906400003 KNOB (CHICKEN HEAD) M.PART 8*V906400009 PLASTIC CORNER M.PART 6*V906400017 ROUND KNOB M.PART 1*V906400021 TACT KNOB CIRCLE AD15/30 M.PART 6*V906400022 VOX BRAND MARK (LARGE) SILVER M.PART 1*V906400023 VALVETRONIX EMBLEM SILVER M.PART 1*V906410006 CABINET FOR AD15 M.PART 1*V906420001 RUBBER FOOT M.PART 4*V906430018 RUBBER BUSHING PHI 12 M.PART 1*V906430053 MAIN CHASSIS AD15 M.PART 1*V906430054 FRONT PANEL AD15 M.PART 1*V906430055 REAR PANEL AD15 100V M.PART 1*V906430056 PCB SUPPORT BRASS 10MM M.PART 4*V906430057 LED BUSHING PHI 5 M.PART 1*V906430058 INSULATE SPACER MICA AD15 M.PART 1

AD15VTPART CODE PART NAME NOTE Q'TY

*V906430059 INSULATE BUSHING TO220 AD15 M.PART 1*V906430060 LED SUPPORT 10MM AD15 PWB031205 6*V906430061 GRILL SUPORT AD15 M.PART 6*V906430063 REAR PANEL AD15 120V M.PART 1*V906430064 REAR PANEL AD15 230V M.PART 1*V906430065 REAR PANEL AD15 240V M.PART 1*V906440028 HEATSINK AD15 (80X30X42 AL) M.PART 1*V906440029 RUBBER SPONGE 15X10X1T M.PART 6*V906440030 RUBBER SPONGE 27X15X2T M.PART 2*V906440031 AD15 SPEAKER GRILL SPC1 1.2T N1 M.PART 1*V906450033 DVOX HANDLE BAR WITH HANDLE M.PART 1*V906460001 FLANGE NUT M4 M.PART 4*V906460001 FLANGE NUT M4 M.PART 4*V906460006 TOOS WASHER PHI PHI 4 INTERNAL M.PART 2*V906460008 TOOS WASHER PHI PHI 3 INTERNAL M.PART 2*V906460011 VOLUME NUT M7 M.PART 9*V906460012 VOLUME WASHER PHI 7 M.PART 9*V906460013 JACK NUT AD15 M.PART 3*V906460014 JACK WASHER AD15/30 PWB031205 1*V906460014 JACK WASHER AD15/30 PWB031209 2*V909000023 PCB ASSY PWB031209 AD15VT M.PART 1*V909000026 PCB ASSY PWB031205 AD15/30VT M.PART 1

AD30VTPART CODE PART NAME NOTE Q'TY

320001607 IC UPD77112GC-017-9EU PWB031205 1320011236 IC M3803FPPP PWB031205 1324038005 IC TDA1308T PWB031205 1600006503 AC POWER CORD DC-627-J01 M.PART 100JP 1*V903010000 TR NPN KTC3198-GR PWB031209A 6*V903010001 TR PNP KTA1266-GR PWB031209A 2*V903010017 TRANSISTER KTA2014 PWB031205 1*V903010019 TRANSISTER KTC2874B PWB031209A 1*V903010020 TRANSISTER KTC2875B PWB031205 1*V903111000 SILICON RECTIFIRE DIODE 1N4002 PWB031209A 7*V903111002 SILICON SWITCHING DIODE 1N4148 PWB031209A 6*V903111012 DOUBLE DIODE DA204K PWB031205 2*V903111013 BRIDGE RECTIFIER DIODE W04M PWB031209A 1*V903111014 BRIDGE DIODE KBP206 PWB031209A 1*V903120008 LED DLL-50231 5MM PWB031209A 1*V903200013 IC DP AMP NJM4556 PWB031205 1*V903200019 IC OP AMP NJM2068M PWB031205 1*V903200023 IC SRAM HY62WT08081E PWB031205 1*V903200024 IC RESET KIA7125FV PWB031205 1*V903200025 IC EEPROM AK93C45AF PWB031205 1*V903200026 IC DC/DC CON NJM2872AF PWB031205 1*V903200027 IC INVERTER 74LVU04DB PWB031205 1*V903200028 IC BINARY COUNTER 74LV4040A PWB031205 1*V903200029 IC OP AMP NJM2082D PWB031209A 2*V903200031 IC REGULATOR KA7815TU PWB031209A 1*V903200032 IC REGULATOR KA7915TU PWB031209A 1*V903200033 IC REGULATOR BA033T PWB031209A 1*V903200034 IC POWER LM3886T PWB031209A 1*V903300009 FUSE CLIP 0751-0110 PWB031209A 2*V903300011 FUSE TIMELAG 250V T1.6AL M.PART 100JP 1*V903300011 FUSE TIMELAG 250V T1.6AL M.PART 117EX 1*V903300011 FUSE TIMELAG 250V T1.6AL M.PART 117CN 1*V903300011 FUSE TIMELAG 250V T1.6AL M.PART 117US 1*V903300011 FUSE TIMELAG 250V T1.6AL M.PART 117US 1*V903300017 FUSE 250V T800MAL M.PART 230WG 1*V903300017 FUSE 250V T800MAL M.PART 230GE 1*V903300017 FUSE 250V T800MAL M.PART 230FR 1*V903300017 FUSE 250V T800MAL PWB031209A 1*V903300017 FUSE 250V T800MAL M.PART 240AU 1*V903300017 FUSE 250V T800MAL M.PART 230UK 1*V903350001 CRYSTAL 8MHZ PWB031205 1*V903350002 CRYSTAL 11.2896MHZ PWB031205 1*V903620015 VR RV160-40-15S-B10K-CO PWB031205 7*V903620016 VR RV160-40-15S-B10K-C11 PWB031205 2*V903620017 VR RS162-20-15SP-B100K STEREO PWB031209A 1*V904020001 AXIAL BEED CORE SAT2550L PWB031209A 2*V904020001 AXIAL BEED CORE SAT2550L PWB031205 1*V904020003 CHIP INDUCTOR HH-1M2012-600 PWB031205 3*V904050020 POWER TRANS 100V= 066-ADJ M.PART 100JP 1*V904050021 POWER TRANS 120V= 066-ADU M.PART 117EX 1*V904050021 POWER TRANS 120V= 066-ADU M.PART 117US 1*V904050021 POWER TRANS 120V= 066-ADU M.PART 117CN 1

PART CODE PART NAME NOTE Q'TY*V904050022 POWER TRANS 230V= 066-ADE M.PART 230GE 1*V904050022 POWER TRANS 230V= 066-ADE M.PART 230UK 1*V904050022 POWER TRANS 230V= 066-ADE M.PART 230FR 1*V904050022 POWER TRANS 230V= 066-ADE M.PART 230WG 1*V904050023 POWER TRANS 240V= 066-ADEF M.PART 240AU 1*V904100108 SPEAKER 10 INCH 8 OHM M.PART 1

AD30VTPART CODE PART NAME NOTE Q'TY

*V904530005 ANALOG SW DG211 PWB031209A 1*V904530014 POWER SWITCH APS1101 M.PART 1*V904530015 TACT SW ATS-1230B(K=9.5MM) PWB031205 6*V904540015 PHONE JACK (STEREO) APJ-8P-S PWB031209A 2*V904540015 PHONE JACK (STEREO) APJ-8P-S PWB031205 1*V904700000 AC CONNECTOR SC-8F-21 M.PART 1*V904752012 FLAT WIRE AWG26 150MM WHT/BK9P PWB031209A 1*V904752013 FLAT WIRE AWG26 210MM WHT/BK8P PWB031209A 1*V904752014 FLAT WIRE AWG26 300MM WHT/BK2P PWB031209A 1*V904753009 T205 RING WIRE AWG18 YL 150MM M.PART 1*V904753010 T250 RING WIRE AWG18 YL 200MM M.PART 1*V904753011 T205/250 WIRE AWG22 BK 150MM M.PART 1*V904753012 SHIELD WIRE UL2547 AWG26 115MM PWB031205 1*V904753013 LEAD WIRE AWG22 150MM WHT PWB031209A 1*V904753014 LEAD WIRE 205T AWG22 400MM WHT PWB031209A 1*V904753015 LEAD WIRE 205T AWG22 520MM BK PWB031209A 1*V904754002 EARTH RING TERMINAL AD15/30 PWB031205 1*V904754002 EARTH RING TERMINAL AD15/30 PWB031209A 2*V904754003 POWER TERMINAL 250 AD15 PWB031209A 8*V904754004 PVC TUBE PHI 3.5 150MM PWB031209A 1*V904755001 WAFER GIL-S-3P-S2TS ANGLE PWB031205 1*V905000001 TUBE SOCKET VT9-PT-2 PWB031209A 1*V905000002 VACUUME TUBE 12AX7WA M.PART 1*V906000104 AC POWER CORD KKP-30 SVT(120V) M.PART 117US 1*V906000104 AC POWER CORD KKP-30 SVT(120V) M.PART 117CN 1*V906000104 AC POWER CORD KKP-30 SVT(120V) M.PART 117EX 1*V906000105 AC POWER CORD KKP-4819R(230V) M.PART 230GE 1*V906000105 AC POWER CORD KKP-4819R(230V) M.PART 230WG 1*V906000105 AC POWER CORD KKP-4819R(230V) M.PART 230FR 1*V906000106 AC POWER CORD KKP650(230UK) M.PART 230UK 1*V906000107 AC POWER CORD KKP550(240AU) M.PART 230AU 1*V906400003 KNOB (CHICKEN HEAD) M.PART 8*V906400009 PLASTIC CORNER M.PART 6*V906400017 ROUND KNOB M.PART 2*V906400021 TACT KNOB CIRCLE AD15/30 M.PART 6*V906400022 VOX BRAND MARK (LARGE) SILVER M.PART 1*V906400023 VALVETRONIX EMBLEM SILVER M.PART 1*V906400024 AD30 VENT GRILL M.PART 2*V906410007 WOODEN CABINET AD30 M.PART 1*V906420001 RUBBER FOOT M.PART 4*V906430018 RUBBER BUSHING PHI 12 M.PART 1*V906430056 PCB SUPPORT BRASS 10MM M.PART 4*V906430057 LED BUSHING PHI 5 M.PART 1*V906430060 LED SUPPORT 10MM AD15 PWB031205 6*V906430061 GRILL SUPORT AD15 M.PART 6*V906430066 MAIN CHASSIS AD30 M.PART 1

PART CODE PART NAME NOTE Q'TY*V906430067 FRONT PANEL AD30 M.PART 1*V906430068 REAR PANEL AD30 100V M.PART 1*V906430069 REAR PANEL AD30 120V M.PART 1*V906430070 REAR PANEL AD30 230V M.PART 1*V906430071 REAR PANEL AD30 240V M.PART 1*V906440029 RUBBER SPONGE 15X10X1T M.PART 6*V906440032 HEATSINK AD30 (80X35X92) M.PART 1*V906440033 SPEAKER GRILL SPC1 1.2T N1 M.PART 1*V906450033 DVOX HANDLE BAR WITH HANDLE M.PART 1*V906460001 FLANGE NUT M4 M.PART 4*V909000026 PCB ASSY PWB031205 AD15/30VT M.PART 1*V909000027 PCB ASSY PWB031209A AD30VT M.PART 1