ETEK AD1823 Diagram

Technical assistance

AD1823

Service Manual

80

61
K02115105
K02115303
K02115304
K12121201
K12121202
K12121503
K12122200
K12122201
K12122700

K12122702
K12123301

K12123302

K12123902
K12124701

601
K12125602
K12200150

1000
K12201002
K12201201
K12202201
K12205600
K12208201
K13121201

1

1

1

1

1

1

1

1

1

1

1

Comp. NO Description

701-AD1823­701-AD1823­701­701­701­701­701­701­701­701­701-

701­701-

701­701-K12123901
701­701­701-K12125

701­701-

701-K1220
701­701­701­701­701­701-

701-K19001101-

701-K19001273-

701-K19001333-

701-K19001563-

701-K19001682-

701-K19001823-

701-K19005222-

701-K19007103-

701-K19941503-

701-K19943503-

701-K19944503-

FINAL ASSY AD1823 EA 1,00
PCB ASSY AD-1823 EA 1,00
PCB D/S AD-1823 EA 1,00
LED HOLDER W/5 HOLE EA 2,00
LED SPACER L=13mm EA 9,00
RES C.F 1/4W 5% 1.2K (TAPE) EA 1,00
RES C.F 1/4W 5% 12K (TAPE) EA 12,00
RES C.F 1/4W 5% 150K (TAPE) EA 12,00
RES C.F 1/4W 5% 220R (TAPE) EA 5,00
RES C.F 1/4W 5% 2.2K (TAPE) EA 6,00
RES C.F 1/4W 5% 270R (TAPE) EA 6,00

RES C.F 1/4W 5% 27K (TAPE) EA 18,00
RES C.F 1/4W 5% 3.3K (TAPE) EA 2,00

RES C.F 1/4W 5% 33K (TAPE) EA 4,00
RES C.F 1/4W 5% 3.9K (TAPE) EA 6,00
RES C.F 1/4W 5% 39K (TAPE) EA 6,00
RES C.F 1/4W 5% 4.7K (TAPE) EA 6,00
RES C.F 1/4W 5% 5.6K (TAPE) EA 2,00

RES C.F 1/4W 5% 56K (TAPE) EA 14,00
RES M.F 1/4W 1% 15R (TAPE) EA 2,00

RES M.F 1/4W 1% 100R (TAPE) EA 6,00
RES M.F 1/4W 1% 10K T&R EA 10,00
RES M.F 1/4W 1% 1.2K T&R EA 2,00
RES M.F 1/4W 1% 2.2K T&R EA 2,00
RES M.F 1/4W 1% 560R T&R EA 1,00
RES M.F 1/4W 1% 8.2K (TAPE) EA 1,00
RES C.F 1/2W 5% 1.2K (TAPE) EA 1,00

RES NTWK SIP-8 1/8W 5% 4*100
"SUPEROHM" SUPB4101J
RES NTWK SIP-8 1/8W 5% 4*27K
"SUPEROHM" SUPB4273J
RES NTWK SIP-8 1/8W 5% 4*33K
"SUPEROHM" SUPB4333J
RES NTWK SIP-8 1/8W 5% 4*56K
"SUPEROHM" SUPB4563J
RES NTWK SIP-8 1/8W 5% 4*6K8
"SUPEROHM" SUPB4682J
RES NTWK SIP-8 1/8W 5% 4*82K
"SUPEROHM" SUPB4823J
RES NTWK SIP-8 1/8W 5% 4*2K2
"SUPEROHM" SUPB4222J
RES NTWK SIP-8 1/8W 5% 4*10K
"SUPEROHM" SUPB4103J
FADER 50KA L=15mm "ALPHA" RA1572-22­085EB1-A54
FADER 50KB CENTER CLICK L=15mm
"ALPHA" RA1572-22-085EB-B54-C
FADER 50KA L=30mm "ALPHA" RA3072-22­085EB1-A54

Part list

EA 3,00

EA 6,00

EA 2,00

EA 6,00

EA 3,00

EA 1,00

EA 10,00

EA 52,00

EA 39,00

EA 24,00

EA 8,00

Qty Refer

.
.
.
FOR 2*5mm LED
FOR 3mm LED
R247
R34,42,54,62,89,97,125,133,140,148,176,184
R37,40,57,60,92,95,128,131,143,146,179,182
R8,9,12,14,16
R44,50,106,111,157,162
R47,53,109,114,160,165

R2,4,35,41,55,61,90,96,101,103,126,132,
141,147,152,154,177,183

R79,81
R67-70
R28,63,87,123,138,174
R43,48,104,110,155,161
R46,52,108,113,159,164
R77,78

R5,29,64,65,86,88,122,124,137,139,173,
175,241,242

R236,237
R1,3,100,102,151,153
R72,74,76,82,238,239,243-246
R11,240
R10,17
R15
R13
R18

RB26,31,42

RB16,17,60,61,84,85

RB27,32

RB3,20,58,59,82,83

RB1,56,80

RB41

RB2,19,22,40,51,57,68,75,81,92

**4

**5

**6

R156,158,163,168-172

K22003335

K22004336

K22008107

K22009106

K22009476

K22012477
K22102220

K22102470
K22202104

K22301153

K22301224

K22302332

K22303102

1

2

3
1

1
1

1

1
1

1
1

1

1

1

2
1

2
1
2
1

1

1

ALT PN: 701-K30100317-

ALT PN: 701-K30100317-

ALT PN: 701-K30101403-

ALT PN: 701-K30204560-2

ALT PN: 701-K40110307-

ALT PN: 701-K40210017-

ALT PN: 701-K60000038-

Comp. NO Description

701-

701-

701-

701-

701-

701­701-

701­701-

701-

701-

701-

701-

701-K30100317-

701-K30100337­701-K30106144-

701-K30204560-

701-K30300317­701-K40004148-

701-K40010001­701-K40010035-

701-K40010036-

701-K40010037-

701-K40110307-

701-K40210017-

701-K60000038-

701-K60000086-

701-K70010067-

701-K70010094-

CAP RAD E 3.3UF 20% 50V P=2.5mm L=7mm
5*11mm
CAP RAD E 33UF 20% 100V P=5mm L=7mm
10*16mm
CAP RAD E 100UF 20% 100V P=5mm L=7mm
10*20mm
CAP RAD E 10UF 20% 50V P=2.5mm L=7mm
5*11mm
CAP RAD E 47UF 20% 35V P=2.5mm L=7mm
6*11mm
CAP RAD E 470uF 20% 35V P=5mm L=7mm
10*16mm

CAP RAD CER 22PF 10% 50V P=5mm L=7mm EA 52,00
CAP RAD CER 47pF 10% 50V P=5mm L=7mm EA 18,00

CAP BOX TYPE POLY 0.1uF 10% 50V P=5mm
L=6mm
CAP RAD MYLAR 0.015UF 10% 50V P=5mm
L=7mm
CAP RAD MYLAR 0.22UF 10% 50V P=5mm
L=7mm
CAP RAD MYLAR 0.0033UF 10% 50V P=4mm
L=7mm
CAP RAD MYLAR 0.001UF 10% 50V P=5mm
L=7mm
IC LM317 TO-92 ADJ +V REGULATOR
"MOTOROLA" LM317L
IC LM317 TO-92 ADJ +V REGULATOR "SGS"
LM317L
IC LM317 TO-92 ADJ +V REGULATOR "NS"
LM317LZ

IC LM337M TO-220 "MOTOROLA" LM337T EA 1,00
IC BA6144 SIP-9 "ROHM" BA6144 EA 2,00

IC LB1403N SIP-9 "SANYO" LB1403N
IC BA4560N SIP-8 AMP OPER "ROHM"
BA4560N

IC BA4560N SIP-8 AMP OPER "JRC" NJM4560L
IC LM317 ADJ POS VOLT REG TO-220
"MOTOROLA" LM317T

DIODE 1N4148 "SEMTECH" 1N4148 EA 12,00
LED RED 3mm L=25mm "LIGITEK" LI2040 EA 9,00
LED RED 2*5mm L=25mm "LIGITEK" LI5230 EA 2,00

LED GREEN 2*5mm L=25mm "LIGITEK"
LG5230
LED YELLOW 2*5mm L=25mm "LIGITEK"
LY5230
TRANS BC307 TO-92 E.B.C PNP "PHILIPS"
BC307B
TRANS BC307 TO-226AA(TO-92)
"MOTOROLA" BC307B

BRIDGE RECTIFIER 2A "GS" 2W02G EA 2,00
BRIDGE RECTIFIER 2A "DC" RC203

PUSH SW 1 KEY 4P2T SELF LOCK (300gf) "E­SWITCH" TL4201-EE-Y

SWITCH PUSH 1 KEY 4P2T SELF LOCK
PUSH SW 1 KEY 2P2T SELF LOCK (300gf)
"SEE-PLUS" PS-22D07L
MICROPHONE PLUG FOR DC CONN. "SHIUA
CHYUAN" SCMI405MOS3N000
XLR CONN. FEMALE PLASTIC "JYE TAI" JY­5031-030G

EA 6,00

EA 2,00

EA 2,00

EA 91,00

EA 8,00

EA 4,00

EA 9,00

EA 12,00

EA 24,00

EA 18,00

EA 12,00

EA 1,00

EA 45,00

EA 3,00

EA 6,00

EA 2,00

EA 6,00

EA 13,00

EA 17,00

EA 1,00

EA 6,00

Qty Refer

C50,70,133,181,195,243

C19,22

C23,318

**1

C89,90,95,96,99,102,106,111

C24,25,29,30

**2
C32,35,36,39,62,66,142,145,146,149,163,

167,204,207,208,211,225,229
C15,16,18,21,26,27,31,316,317

C52,54,72,74,135,137,183,185,197,199,245,247

**3

C53,55,57,73,75,77,136,138,140,184,186,
188,198,200,202,246,248,250

C49,58,69,78,132,141,180,189,194,203,242,251

U6

U8
U24,26

U1-3,9-23,25,27-52

U4,5,7

D6,8,15,17,20,22,23,25,26,28,29,31
D3,7,16,21,24,27,30,38,39
D18,19

D18,19

D18,19

Q1-6

D1,2

S1,3-5,9,15,17,18,20,22,24,25,27

S2,6-8,10-14,16,19,21,23,26,28,31,35

JP2

J1,3,31,33,52,54

1

1

1

1

1

K02115305

3
K02144004
K02151041

K03115008

3115011
K03115012
K03115015
K03115016
K03115022

1

K70050071
K70050200
K70050203
K70050234
K70050235
K70060001
K80030014
K80030029

K80030034
K80030099
K80040038
K81030001
K89000010
K04115104

1

1

Comp. NO Description

701-K70010096-

701-K70020027-

701-K70020183-

701-K70030081-

701-K70030127­701-

701-K0211531
701­701-

701­701-K0
701­701­701­701-

701-K06115003­701-

701­701­701­701­701­701­701­701-K80030032 SCREW M3*6mm +P/A S/T Z.BLK EA 15,00
701­701­701­701­701­701-

701-K50100147-1

701-K50100148-1

701-K50100146-

701-K50100136-

XLR CONN. MALE PLASTIC "JYE TAI" JY­5030-030G
HEADER 2*7 PIN P=2.54mm "REACH POWER"
1002-14-S
JUMP CONNECTOR "REACH POWER" 2700­G6B
CONNECTOR RCA CHINCH 4 POLE DUAL
STEREO "DAE RYUNG" JK0400570N
JACK STEREO D=6.43 1P UPRIGHT HID NINS
W/SP "LIH-SHENG" LJ0695F-5-S50

CAP SWITCH 02 FOR 2P EA 17,00
CAP SWITCH 01 FOR 4P EA 13,00

PLASTIC FOOT (STANDARD SELF­ADHESIVE)

RUBBER HEADER COVER BLK EA 1,00
HEATSINK AL AD1823/AD1223 EA 1,00
BOTTOM AD-1823 EA 1,00
PANEL CONTROL AD-1823 EA 1,00
SIDE BRACKET LEFT AD-1823 EA 1,00
SIDE BRACKET RIGHT AD-1823 EA 1,00
COVER SILVER FOR DSP EA 1,00
CABLE ASSY UL1007 #26 8PIN L=110mm

W/MALE CONN. "REACH POWER" 6604T
ST WIRE #26 UL1007 5+70+5 RED EA 2,00

ST WIRE #26 UL1007 5+70+5mm BLUE EA 2,00
ST WIRE #26 UL1007 5+70+5mm GREEN EA 2,00
ST WIRE #20 UL1007 5+70+5mm BROWN EA 2,00
ST WIRE #20 UL1007 5+70+5mm BLACK EA 2,00
CABLE TIE 4" EA 1,00
SCREW M3*6*0.5P +COUNTERSUNK Z.BLK EA 2,00
SCREW M3*8mm +P/H M/C Z.BLK EA 4,00

SCREW M3*6mm +P/H M/C ZINC WHITE EA 7,00
SCREW M3*4mm +F/H M/C Z.WHITE EA 6,00
SCREW M4*6mm +B/H M/C Z.WHITE EA 4,00
NUT M3 Z.WHITE EA 4,00
INSULATOR SI-RUBBER-TO-220 W/HOLE EA 4,00
INSTRUCTION MANUAL AD-1823 EA 1,00
ADAPTOR I/P:230VAC O/P:20*2VAC 430mA*2

VER.AU

ADAPTOR I/P:230VAC O/P:20*2VAC 430mA*2

VER.UK

ADAPTOR I/P:115VAC O/P:20*2VAC 430mA*2

VER.USA

ADAPTOR I/P:230VAC O/P:20*2VAC 430mA*2

VER EU

EA 2,00

EA 1,00

EA 2,00

EA 1,00

EA 23,00

EA 4,00

EA 1,00

1,00

1,00

EA 1,00

EA 1,00

Qty Refer

J23,25

JP1

FOR JP1

J24

J2,4,19,20-22,26-30,32,34,48-51,53,55,69-72

.
.

.

.
.
.
.
.
.
.

.

.
.
.
FOR POWER CONNECTOR
FOR POWER CONNECTOR AND GND
.
FOR DSP COVER/COVER
IC
12-XLR,1-RCA,2-CONNECT
PCB/STUD
BOT/COVER
FOR BRACKET
IC
IC
.

.

.

A

B

B

C

C

D

D

E

E

4 4

3 3

2

2

1 1

INSERT

LINE IN

MONO

CH2 MICRO

INSERT

LINE IN

MONO

CH1 MICRO

CH2 MICRO

GAIN

CH1

GAIN

CH2

CUTOFF

FREQ.

CUTOFF

FREQ.

CH1_2 MONO IN 04A3

1 24Monday, October 23, 2000

Title

Size Document Number Rev

Date: Sheet of

ROUTING CH2

2 1

3

J3

XLR FEMALE 90

132

+

C7

10uF

50V

+

C8

10uF

50V

J4

JACK STEREO

4
5
2
3
1

R4

27K

22pF

+

-

U15A

BA4560N

3

2

1

8 4

R49A

50K LOG

R53

270

R48

39K

R50

2K2

R51A

50K LOG

+

-

U15B

BA4560N

5

6

7

8 4

22pF

C68

22pF

+

-

U14A

BA4560N

3

2

1

8 4

R45B

50K LOG

R49B

50K LOG

C65

220nF

C67

220nF

R51B

50K LOG

R52

4K7

C10

22pF

C66

47pF

R3

100 1%

+

C9

10uF

50V

ETEK AD 1823

ROUTING CH1

7

U14B

BA4560N

-

+

8 4

5

6

C62

47pF

R44

2K2

R27A

J2

JACK STEREO

H

8

G

7

F

6

E

5

D

4

C

4X22K

3

B

2

A

1

RB3

H

8

G

7

F

6

E

5

D

4

C

4X2K2

3

B

2

A

1

RB2

R43

H

8

G

7

F

6

E

5

D

4

C

4X56K

3

B

2

A

1

RB20

CH1 MICRO

4
5
2
3
1

C2

22pF

50K LOG

39K

C60

+

C59

50V

10uF

+

C4

R1

1

+

-

3

2

C63

220nF

-

6

+

C61

50V

10uF

R2

27K

50V

10uF

100 1%

U1A

BA4560N

8 4

C5

22pF

4K7

R46

R27B

50K LOG

220nF

270

R47

R45A

50K LOG

7

U1B

BA4560N

+

8 4

5

C64

C6

H
G
F
E
D
C

4X6K8

A

B
A

RB1

+

+48V

132

3

+

C3

50V

50V

10uF

10uF

XLR FEMALE 90

C1

8
7
6
5
4
3
2
1

1

J1

2

A

B

B

C

C

D

D

E

E

4 4

3 3

2

2

1 1

ROUTING CH2

LINE

RIGHTINCH10

LINE

LEFTINCH9

CH10 STEREO IN LEVEL

PAN POT CH2

PAN POT CH2

STEREO 7_10&CH1_2 ROUTING&PAN

04A3

2 24Monday, October 23, 2000

Title

Size Document Number Rev

Date: Sheet of

D_L_1 TO C_L_2

A_R_1 TO B_R_2

A_L_1 TO B_L_2

D_R_1 TO C_R_2

A_L_2 TO B_L_3

A_R_2 TO B_R_3

PAN TO TONES CH2 R

PAN TO TONES CH2 L

S5C

SWITCH 4C_2P new

8

7

9

S5D

SWITCH 4C_2P new

11

10

12

R31A

50K

LIN

+

-

U12A

BA4560N

3

2

1

8 4

R31B

50K

LIN

+

-

U12B

BA4560N

5

6

7

8 4

ETEK AD 1823

PAN TO TONES CH1 L

PAN POT CH1

LIN

50K

R30B

7

U11B

BA4560N

+

-

8 4

5

6

D_L_1 TO C_L_2

D_R_1 TO C_R_2

LIN

50K

R30A

ROUTING CH1

1

3

4

S4A

2

H

8

G

7

F

6

E

5

D

4

C

4X27K

3

B

2

A

1

RB16

6

S4B

SWITCH 4C_2P new

5

7

9

SWITCH 4C_2P new

S4C

8

4X27K

PAN TO TONES CH1 R

PAN POT CH1

1

U11A

BA4560N

+

-

8 4

3

2

A_L_1 TO B_L_2

A_R_1 TO B_R_2

10

12

SWITCH 4C_2P new

S4D

11

H

8

G

7

F

6

E

5

D

4

C

3

B

2

A

1

RB17

D_L_2 TO C_L_3

D_R_2 TO C_R_3

1

3

4

S5A

SWITCH 4C_2P new

2

6

S5B

SWITCH 4C_2P new

SWITCH 4C_2P new

5

+

50V

C43

10uF

+

50V

C44

10uF

LEVEL

ROUTING Ch1

ROUTING CH2

CH8 STEREO IN LEVEL

CH7 STEREO IN LEVEL

R32A

50K LOG

+

50V

C45

10uF

45231

A

J19

JACK STEREO

LINE

RIGHTINCH8

J20

+

C46

45231

LINE

LEFTINCH7

R32B

50K LOG

50V

10uF

+

C47

45231

J21

JACK STEREO

R33A

50K LOG

45231

J22

+

C48

50V

10uF

JACK STEREO

R33B

50K LOG

50V

10uF

JACK STEREO

A

B

B

C

C

D

D

E

E

4 4

3 3

2

2

1 1

EQ

ON/OFF

EQ

ON/OFF

HIGH

MID

EQ

ON/OFF

EQ

ON/OFF

MID

HIGH

CH1_2 TONES CONTROLLER

04A3

3 24Tuesday, October 24, 2000

Title

Size Document Number Rev

Date: Sheet of

OUT TONES CH1 L

OUT TONES CH2 L

22pF

C57

3.3nF

R40

150K

R41

27K

R42

12K

C58

1nF

R38B

50K

LIN

R39B

50K

LIN

R36B

50K

LIN

+

-

U13B

BA4560N

5

6

7

8 4

+

-

U29B

BA4560N

5

6

7

8 4

S6B

SWITCH 2C_2P new

5

4

6

22pF

R60

150K

R61

27K

R62

12K

C78

1nF

R58B

50K

LIN

R59B

50K

LIN

R56B

50K

LIN

+

-

U16B

BA4560N

5

6

7

8 4

C77

3.3nF

+

-

U30B

BA4560N

5

6

7

8 4

S7B

SWITCH 2C_2P new

5

4

6

ETEK AD 1823

1

U30A

BA4560N

+

-

8 4

3

2

H

8

G

7

F

OUT TONES CH2 R

6

E

5

D

4

C

4X10K

3

B

2

A

1

Rb44

SWITCH 2C_2P new

2

S7A

1

3

C69

R54

LIN

50K

R56A

BASS

LIN

50K

R59A

C73

LIN

50K

1nF

R55

27K

12K

C70

3.3uF

R58A

R57

150K

C71

22pF

-

2

3.3nF

Rb22

C72

15nF

1

U16A

BA4560N

+

8 4

3

Rb21

1

+

-

3

2

C75

H
G
F
E
D
C

4X2K2

B
A

H
G
F
E
D
C

4X10K

B
A

PAN TO TONES Ch2 R

U29A

BA4560N

8 4

3.3nF

8
7
6
5
4
3
2
1

8
7
6
5
4
3
2
1

C74

15nF

C76

PAN TO TONES CH2 L

H

8

G

7

F

6

E

5

D

2

S6A

3

LIN

50K

R36A

BASS

A

LIN

50K

1nF

C49

27K

R34

R35

12K

C50

3.3uF

R38A

R37

150K

C51

22pF

-

4

C

OUT TONES CH1 R

4X10K

3

B

2

A

1

RB43

1

SWITCH 2C_2P new

LIN

50K

R39A

C53

C52

1

U13A

BA4560N

+

8 4

3

2

C55

H

8

G

7

F

6

E

5

D

4

C

4X2K2

3

B

3.3nF
2

A

1

Rb19

H

8

G

C54

15nF

7

F

6

E

15nF

D
C

4X10K

B
A

Rb18

PAN TO TONES Ch1 R

5
4
3

C56
2
1

PAN TO TONES CH1 L

3.3nF

A

B

B

C

C

D

D

E

E

4 4

3 3

2

2

1 1

PFL

PFL

PFL

Ch2

MUTE

Ch2

MUTE

PFL

PFL

PFL

PFL

CH1_2 PFL 04A3

4 24Wednesday, October 25, 2000

Title

Size Document Number Rev

Date: Sheet of

OUT TONES CH2 R

OUT TONES CH2 L

CH2 R TO FADER

CH2 L TO FADER

R3 CH2

R4 CH2

-VCC

+VCC

PFL R ENABLE BUS

PFL LED ENABLE BUS

PFL LEFT BUS

PFL LEFT BUS

PFL R ENABLE BUS

+

C40

10uF

50V

+

C41

10uF

50V

C260

220nF

R242

56K 1%

D8

1N4148

D7

3 mm RED LED

D6

1N4148

R28

3K9

RB15

4X10K

A

1

B

2

C

3

D

4

E

5

F

6

G

7

H

8

C42

220nF

R29

56K

S2A

SWITCH 2C_2P new

2

1

3

S2B

SWITCH 2C_2P new

5

4

6

S3A

SWITCH 4C_2P new

2

1

3

S3B

SWITCH 4C_2P new

5

4

6

S3C

SWITCH 4C_2P new

8

7

9

S3D

SWITCH 4C_2P new

11

10

12

Q1

BC307

R251

1K 5%

R252

1K 5%

ETEK AD 1823

PFL LEFT BUS

R4 CH1

R3 CH1

CH1 L TO FADER

H
G
F
E
D
C

4X10K

B
A

RB23

2

Ch1

MUTE

S8A

1

R249

1K 5%

3

SWITCH 2C_2P new

PFL RIGHT BUS

CH1 R TO FADER

PFL

2

S9A

SWITCH 4C_2P new

S9B

1

3

8
7
6
5
4
3
2
1

MUTE

Ch1

S8B

4

R250

1K 5%

5

6

SWITCH 2C_2P new

R64

C81

PFL L ENABLE BUS

PFL R ENABLE BUS

PFL LED ENABLE BUS

5

7

9

SWITCH 4C_2P new

S9C

4

6

8

+VCC

3K9

R63

Q2

D15

56K

R241

C259

220nF

10

12

SWITCH 4C_2P new

S9D

SWITCH 4C_2P new

11

-VCC

D16

Bc307

1N4148

56K 1%

220nF

3 mm RED LED

D17

1N4148

+

50V

C79

10uF

OUT TONES CH1 R

A

+

50V

C80

10uF

OUT TONES CH1 L

A

B

B

C

C

D

D

E

E

4 4

3 3

2

2

1 1

FADER

CH2

CH1_2 FADER

04

A3

5 24Wednesday, October 25, 2000

Title

Size Document Number Rev

Date: Sheet of

CH2 R TO FADER

AUX CH2 B

CH2 L POSTFADER

CH2 R POSTFADER

R3 CH2

R4 CH2

MAIN L BUS

MAIN R BUS

A

1

B

2

C

3

D

4

E

5

F

6

G

7

H

8

+

C37

10uF

50V

+

C38

10uF

50V

R26A

50K LOG

+

-

U10B

BA4560N

5

6

7

8 4

+

-

U10A

BA4560N

3

2

1

8 4

C36

47pF

C39

47pF

R26B

50K LOG

ETEK AD 1823

AUX CH1 A

AUX CH2 A

1

U9A

BA4560N

+

-

RB12D

10K

RB12C

10K

RB12B

10K

RB12A

10K

1 2 3 4 5 6 7 8

RB12

CH1 L TO FADER

8 4

3

2

R25B

50K LOG

CH1

R25A

50K LOG

FADER

+

C33

NC

NC

+

50V

C34

10uF

MAIN R BUS

MAIN L BUS

R4 CH1

7

U9B

BA4560N

+

-

8 4

5

6

C35

C32

47pF

50V

10uF

CH1 L POSTFADER

R3 CH1

47pF

CH1 R POSTFADER

4X10K

RB14

CH2 L TO FADER

CH1 R TO FADER AUX CH1 B

A