47k

R1

47k

R2

GND

10k

R3

10k

R4

220R 5W

R5

220R 5W

R6

220R 5W

R7

220R 5W

R8

GND

GND

220k

R9

220k

R10

220k

R11

220k

R12

22k

R14

22k

R16

GND

GND

+12V

-12V

100p

C4

100p

C5

1uF

C6

22k

R17

100k/B

P1

100p

C7

GND

1u

C2

1u

C1

+12V

-12V

22k

R18

22k

R19

100p

C8

GND

SW1

0/180

DP1

Diode 1N4004

DP2

Diode 1N4004

DP3

Diode 1N4004

DP4

Diode 1N4004

CON1

CON2

CON3

220uF

C24

220uF

C25

100nF

C100

100uF

C26

100uF

C27

100nF

C101

100nF

C102

100nF

C103

+12V

-12V

1uF

C9

22k

R20

50k/A

P2A

10K

R21

100n

C10

47n

C12

GND

1K

R22

10n

C11

1uF

C13

22k

R23

50k/A

P2B

10K

R24

100n

C14

47n

C16

GND

2k2

R25

33n

C15

2

3

1

4

11

A

U1A
TL074ACN

4

11

5

6

7

B

U1B
TL074ACN

4

11

10

9

8

C

U1C
TL074ACN

4

11

12

13

14

D

U1D
TL074ACN

8

5

3

2

6

7

4

1

U2
TL071ACN

+12V

-12V

1

2

CON4

HI IN R

1

2

CON5

HI IN L

+

-

+

-

L
GND

R

D1
1N4148

D2
1N4148

D3
1N4148

D4
1N4148

100n

C104

100n

C106

100n

C105

100n

C107

1
2
3
4
5

CON6

Zlacze 5

SIGNAL OUT

SIGNAL OUT

GND

IN

1

3

OUT

2

GND

U5

L7812CP

IN

3

1

OUT

2

GND

U6
L7912CV

1k

R26

LED1

LED2

+12V

Subwoofer preamp v1.1