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R10 R24 C1 1 2 3 4 5 6 7 8 J3 CH A OCTAL R22 3 J1 CH A XLR 1 BAR1 1 2 3 4 5 6 INPUT BARRIER J6
C

470 C24 150pF 13 12

0.1/100V

NOTE 2

C22 330pF

10 D1 1N4148 R23 10K/1% D3 1N4148 D5 1N4148 8 C5 +18V C30 CP 1 IC1A OPA2604AU 220pF R44 1.5K C14 C31 C3 30pF CP C2 0.1/100V 750 16 15 14 13 12 11 10 9 R39 R36 750 R37 1.5K +18V C28 220pF +18V -18V D2 1N4148 R26 SW1 MSSA2350 10K/1% D4 1N4148 R27 10K/1% 3 4 D8 1N4148 C4 30pF 8 D6 1N4148 2 3 C6 30pF 220K R5 + 3 4 9 5 6 R41 1.5K C21 330pF 1 2 IC4A STK3152 R38 3.3K 10K IC3 NE5517AN R40 1 2 3 4 5 6 7 8 10K R43 47K -18V R9 470 -18V R34 1.5K +18V R35 10/16V/BP R45 3.3K 6.65K/1% 1/63V 30pF R6 220K C29 5 6 + 7 IC1B NE5532 15 + 11 14 IC4B STK3152

R17

100

C20 330pF

R2 C12 90.9K/1% C8 0.1/100V

1 2 3 4 5 6 7 8 J8 CH A MODULE CH A OUT

2 3 D7 1N4148

+ 4

2

C10

15pF

R18

100

10K/1% R3 NOTE 1

R12

R14 100K/1W/2% R19 4.7/1W C17 0.1/100V T90N5D12-24 J9 1 2 RELAY RLY1

CH A MODULE

R21 NOTE 2:

C15 100/100V R42 47K C16 100/100V

CH B OUT 0.1/100V C18 R20 4.7/1W T90N5D12-24 SUPPLY GND RLY2 CH B MODULE
C

ANALOG GND RETURN CH B SEND CH B ANALOG GND RETURN CH A SEND CH A ATTENUATE CH B ATTENUATE CH A +12 V DATA CH A DATA CH B +16 V

1 2 3 4 5 6 7 8 9 10 11 12 13 26-48-1136 1 2 3 4 5 6 7 8 J4 CH B OCTAL 2

C23 150pF R15 6 + 8 7 5 100

SUPPLY GND C19

7 IC2B NE5532

330pF

1 2 3 4 5 6 BAR2 OUTPUT BARRIER 1 2 3 4 5 6 7 8 J7 CH B MODULE

R25

NOTE 2 +18V

R13 + R1 1 IC2A OPA2604AU R46 4.7K R32 100K C25 4.7/35V R47 4.7K R33 100K C26 4.7/35V C7 0.1/100V 90.9K/1% C9 15pF R11 6.65K/1%

100K/1W/2%

R16

100

J2 CH B XLR 1

R4 NOTE 1

R28 NOTE 2

-18V
B

R29 NOTE 3 C13 1/63V -16V C11 10/16V/BP

R30 NOTE 3
B

10/13/92 CHANGED J6 TO 13 PIN

NOTE 1:

FA601 FA901 FA1201 FA2401 FA601 FA901 FA1201 FA2401

= = = = = = = =

13.3K/1% 12.7K/1% 12.4K/1% 12.4K/1% 30.1K/1% 36.5K/1% 40.2K/1% 44.2K/1%

NOTE 2:

NOTE 3:

FA601 = 680/10W FA901 = 820/10W FA1201 = 1K/10W FA2401 = 1K/10W FA601 = 1.3K/7W FA901 = 1K/7W FA1201 = 1.2K/7W FA2401 = 1.2K/7W

NOTE 4:

A

A

CREST AUDIO INC. 100 Eisenhower Drive Paramus, NJ 07652 Title OTA PREAMP/DRIVER FOR FA SERIES Size C Date:
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Document Number 21C1348 Thursday, January 24, 2002 Sheet
1

Rev 01 1 of 1