JBL Digital 12 Schematic

1413121110987654321

15

C16

200uF

C15

200uF

L IP
RCA

RCA

330nF

SPDT

R IP

LOPASS
100k Lin Pot

C14

10

9

SPKR LEV IO

R

L

High Level In

U1

LM324
R37

8k66

LO-PASS

R30

16k5

R27

8k25

8

R54 100R

R55

100R

R56
100R

R39

36k5

R49

C7

33nF

C31

47nF

R51

38k3

6

7

U1

5

383k

2

3

R59

1

U2

4k7

TL 082

R4

47k

HI-PASS / EQ

D4

C20

100nF

C19

C18

100nF

100nF

R48
6k98

R42 100k

R43 100k

R53 100R

R44
10k

R45

10k

10nF

R35

332k

13

14

U1

12

LM324

5k LOG

R40

68k

C33

220pF

4

+15V

2

U1

3

-15V

11

C9

100nF

C13

LEVEL 1

1

POT.

1

C17

100nF

R20
4k7

R18
330k

2

3

LED
DRIVE

LED2
N/F

Q2
2N3906

R26

1000K

R32

C11

470k

100uF

To AC Feed

To GND

To AC Return To Power Cord

1N4148

R50

150R

R52

1k

REMOTE

1

2

3

V+

V-

2 Clr LED

LED1

R21
10k

R22

2k2

D3

FUSE (On FUSE PCB)

TRX

MCI 4340E

0.5A

R19
1k

1N4749A

Q1

MPSA13

TRANSFORMER IS MOUNTED ON FACPLATE

700Hz Lo-Pass

+6V Supply

C2

4700uF

1N5234B

C29

0R

J4

N/F

J5

N/F

J6

N/F

J7

N/F

C8 100nF

D6

R16
470R

100nF

C5

100nF

R17
470R

S53
MODULE

R46

47R

R9
2k

UVLO

D1

1N5256B

R1

1M5

C4

D10
1N4744A

D9

1N4744A

BR RECT

V+ V-

RS604

H-Pass Pot.

2

1

1

2

2

3

1

4

2

5

1

6

2

7

1

8

+6V

V+

O/P

V-

+15V

S/D

FR

I/P

GND

-15V

D add
1N4735A

From L IP RCA

From R IP RCA

R3
33k2

6

5

DIODE CLIPPER

SW

C27

3n3F

U2

TL 082

To Power Cord

7

R58
4k64

C1
4700uF

R25
47k

R24

22k

C26

10nF

D2
1N4148

R33

150R

R57
1k

C add 10nF

SHORT CIRCUIT PROTECT

R7
3k3

Q3

2N4401

Q4

L2

C3

330nF

C7A

CMC

C7B

2m2H

C25

N/F

R11

N/F

C32

N/F

R13
N/F

Part No:

Model Name:

Date:

17-Oct-2000

Drawn:

MS/LL

Rev.

2

R8
47k

MPSA56

R5
1k

R4A

R4B

0.1R

0.1R

2.2uHL1110uH

OUTPUT FILTER

100nF

100nF

C12

N/F

R10
N/F

C30

N/F

R12
N/F

MBD-04020102

BU-120E

Sheet:

1of1

Q5
MPSA56

R4C

0.1R

3

2

5

6

R6
1k

C6

10uF

R15

100k

AC Feed

QUICK FIT TERMINAL

GND

QUICK FIT TERMINAL

AC Return

QUICK FIT TERMINAL

+15

1

U3

TL 082

-15

7

U3

TL 082

C24

100nF

L4

Jumper

L3

Jumper

L OP
RCA

N/F

R OP

N/F

RCA

N/F

N/F

a

I

LOPASS
100k Lin Pot

R31

H

G

F

E

D

C

B

A

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

16k5

PHASE SW

SPKR LEV IO

R

L

High Level Out

R36
8k66

R2
8k66

RCA Connector

LINE LEVEL INPUT

QUICK FIT TERMINAL

SPK-

CZ

N/F

QUICK FIT TERMINAL

SPK+

CW
N/F

C10
N/F

C28
N/F

I

H

G

F

E

D

C

B

A