Crest FA901 set, 21b0982 preamp Schematic

8

7

6

5

4

3

2

1

R7

1N5930

Z1

C1 0.1/100V

D1

1N4148

R24

NOTE 2

330pF

C22

R10 470

C24

150pF

4.7K/2W

C5 30pF

84

2

-

3

+

1N4148

1N4148

30pF

IC1A

NE5532

D2

D6

C4

5

1

Z2

1N5930

R6

100K

C6 30pF

R25

NOTE 2

6

-

5

+

IC1B

NE5532

90.9K/1%

C7

0.1/100V

90.9K/1%

C8

0.1/100V

7

100K

1/63V

R1

R5

C12

R2

4

15
14

IC2B
STK3152

C10 15pF

R12

3.32K/1%

C14

10/16V/BP

R9 470

C21
330pF

IC2A

STK3152

R11

3.32K/1%

C13

1/63V

+

-

1
2

C9

15pF

13121011

349

+

-

8

10/16V/BP

100/100V

100/100V

65

7

C11

R17 100

R18 100

R14

100K/1W/2%

C15

C16

C23

150pF

R13 100K/1W/2%

R16 100

3

R15

100

C20

330pF

4.7K/2W

R19

4.7/1W

C17

0.1/100V

0.1/100V
C18

R20

4.7/1W

C19

330pF

NOTE 3

R8

R29

1
2
3
4
5
6
7
8

J8

CH A MODULE

CH A OUT

CH A MODULE

RLY1

T90N5D12-12

J9

1
2

RELAY

CH B OUT

CH B MODULE

RLY2

T90N5D12-12

SUPPLY GND
SUPPLY GND

1
2
3
4
5
6

BAR2

OUTPUT BARRIER

1
2
3
4
5
6
7
8

J7

CH B MODULE
R30
NOTE 3

CREST AUDIO INC.

150 Florence Avenue
Hawthorne, NJ 07506
Title

PREAMP/DRIVER FOR FA SERIES

Size Document Number Rev

21B0982

B

Date: Sheet of

2

1 1Thursday, May 18, 2000

1

10K/1%

10K/1%

R3
NOTE 1

R23

R22

D3

1N4148

R21
NOTE 2:

D5

1N4148

D7

1N4148

C3

30pF

D D

1
2
3
4
5
6
7
8

J3

CH A OCTAL

21

3

J1
CH A XLR

C2

0.1/100V

1
2

BAR1

J6

3
4
5
6

Z3

1N5359

1
2
3
4
5
6

D8

1N4148

1
2
3
4
5
6
7
8

SW1

MSSA2350

R26

10K/1%

R27

10K/1%

D4

1N4148

C C

INPUT BARRIER

SIG SEND/RET

B B

J4

CH B OCTAL

21

R4
NOTE 1

R28
NOTE 2

3

CH B XLR

A A

J2

NOTE 1:

NOTE 2:

NOTE 3: FA601 = 680/10W

8

7

FA601 = 13.3K/1%
FA901 = 12.7K/1%
FA1201 = 12.4K/1%
FA2401 = 12.4K/1%

FA601 = 30.1K/1%
FA901 = 36.5K/1%
FA1201 = 40.2K/1%
FA2401 = 44.2K/1%

FA901 = 820/10W

FA1201 = 1K/10W

6