Crest Audio FCV-440 Schematic
Schematicset
FCV220&FCV440Seriespoweramplifiers
1.Preampdriver
2.PreampdriverOTA
3.Powersupplyinterconnects
4.Powersupplyandfandriver
5.Outputstage
6.NexSyspreampdriver
7.NexSyspowersupply
8.NexSysoutputstage
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
2.7K/2W
C5 30pF
-
2
+
3
8 4
1
IC1A
NE5532
1N5930
R6
100K
90.9K/1%
C8
0.1/100V
R2
15
+
14
-
IC2B
STK3152
C10 15pF
13121011
R17 100
C20
330pF
R18 100
1
2
3
4
5
6
7
8
J8
CH A MODULE
CH A OUT
R8
R14
Z2
VR1
100K/1W/2%
5K
R12
6.65K/1%
C15
100/100V
C12
0.47/250V
C16
100/100V
2.7K/2W
R19
4.7/1W
C17
0.1/100V
0.1/100V
C18
R20
4.7/1W
T90N5D12-12
J9
1
2
RELAY
CH A MODULE
RLY1
CH B OUT
CH B MODULE
10K/1%
10K/1%
R3
NOTE 1
R23
R22
D3
1N4148
R21
NOTE 2:
D5
1N4148
D7
1N4148
C3
30pF
D D
CH A OCTAL
1
2
3
4
5
6
7
8
J3
C2
0.1/100V
1
2
BAR1
3
4
5
6
Z3
1N5359
C C
INPUT BARRIER
RLY2
T90N5D12-12
D8
1N4148
D2
1N4148
C6 30pF
R26
1
2
B B
3
4
5
6
7
8
SW1
MSSA2350
10K/1%
R27
10K/1%
D4
1N4148
D6
1N4148
R25
NOTE 2
-
6
5
+
IC1B
NE5532
7
J4
CH B OCTAL
R3,R4
NOTE 1:
R4
NOTE 1
FCV440 = 13.75K/1%
FCV220 = 15.1K/1%
R28
NOTE 2
C4
30pF
VR2
5K
C7
0.1/100V
90.9K/1%
R1
R5
R21,R24,R25,R28
NOTE 2:
FCV440 = 27.18K/1%
FCV220 = 19.6K/1%
100K
R9 470
C21
330pF
IC2A
STK3152
R11
6.65K/1%
C13
0.47/250V
1
2
C9
15pF
349
+
-
C19
C23
150pF
65
8
7
R15
100
R13 100K/1W/2%
R16 100
330pF
1
2
3
4
5
6
7
8
J7
CH B MODULE
NOTE 3
R29
R30
NOTE 3
SUPPLY GND
SUPPLY GND
A A
R29,R30
R7, R8 CHANGED FROM 4.7K TO 2.7K ON 4/8/92
8
7
NOTE 3:
FCV440 = 680/10W
FCV220 = 520/10W
6
CREST AUDIO INC.
150 Florence Avenue
Hawthorne, NJ 07506
Title
PREAMP/DRIVER FCV220/FCV440
Size Document Number Rev
21B1241
B
5
4
3
Date: Sheet of
2
1 1Thursday, May 18, 2000
1
8
D D
7
6
5
4
3
2
1
R10 470
R32
100K
3
2
5
6
4.7/35V
+24V
84
+
-
OPA2604
-24V
+24V
200/1W
R38
6.8K
+
- IC2B
OPA2604
C25
IC2A
1
R7
7
R44
3.3K
NE5517AN
R47
4.7K
R39
10K
R40
10K
IC3
1.5K
6.8K
R41
R45
1234567
R33
100K
4.7/35V
10/16V/BP
10111213141516
C26
8
7
C11
10/16V/BP
100/100V
100/100V
65
C24
150pF
R17 100
R18 100
100K/1W/2%
C15
C16
C23
150pF
C20
330pF
R14
R15
100
R13 100K/1W/2%
R16 100
4.7/1W
C17
0.1/100V
0.1/100V
C18
4.7/1W
C19
330pF
1
2
3
4
5
6
7
8
J8
CH A MODULE
CH A OUT
CH A MODULE
RLY1
R19
T90N5D12-24
26-48-1036
JP?
J9
1
1
2
2
3
3
HEADER 3
CH B OUT
R20
CH B MODULE
RLY2
T90N5D12-24
SUPPLY GND
SUPPLY GND
1
2
3
4
5
6
7
8
J7
CH B MODULE
C22
330pF
13121011
15
+
14
-
IC4B
STK3152
R2
C12
1/63V
C14
90.9K/1%
C8
0.1/100V
R12
C10 15pF
6.65K/1%
Z1
1N5353
R42
47K
8 9
R43
47K
-24V
-24V
90.9K/1%
C7
0.1/100V
R8
200/1W
1N5353
Z2
R9 470
C21
330pF
349
1
+
2
-
IC4A
STK3152
R1
R11
6.65K/1%
C13
1/63V
C9
15pF
C1 0.1/100V
1
2
3
J3
CH A OCTAL
4
5
6
7
8
10K/1%
R23
D3
1N4148
R22
10K/1%
J1
CH A
BAR1
1
2
3
4
5
6
ANALOG GND
ANALOG GND
DATA CH A
DATA CH B
DIGITAL GND
DIGITAL GND
INPUT BARRIER
+15 V
+24V
-24V
26-48-1116
CH B OCTAL
CH B
1
2
3
4
5
6
7
8
9
10
11
J6
1
2
3
4
5
6
7
8
J4
+24V
-24V
J2
C C
ATTENUATE CH A
ATTENUATE CH B
B B
SW1
R3
NOTE 1
MSSA2350
R?
27
R21
NOTE 2:
R4
NOTE 1
OC1
4N25
CH B ATTN CH A ATTN
10K/1%
10K/1%
D1
1N4148
D5
1N4148
D7
1N4148
C3
30pF
C2
0.1/100V
R26
D4
NOTE 2
1N4148
R28
R27
-24V
R?
27
D8
1N4148
2
3
+24V
84
-
+
-24V
+24V
+24V
NOTE 2
C5 30pF
C30
CP
1
IC1A
OPA2604
C31
CP
D2
1N4148
D6
1N4148
C4
30pF
OC2
4N25
C6 30pF
R25
NOTE 2
6
-
5
+
OPA2604
IC1B
R6
220K
C29
220pF
JP1
VR1
5K
R34
3.3K
R35
750
R36
750
R37
1.5K
C28
4.7K
220pF
R46
R5
220K
JP2
7
VR2
5K
R24
NOTE 1:
FCV440 = 13.75K/1%
FCV220 = 15.1K/1%
NOTE 2:
FCV440 = 27.18K/1%
FCV220 = 19.6K/1%
A A
CREST AUDIO INC.
100 Eisenhower Drive
Paramus, NJ 07652
Title
OTA PREAMP/DRIVER FOR FCV SERIES
Size Document Number Rev
21C1383
C
8
7
6
5
4
3
Date: Sheet of
2
1 1Thursday, May 18, 2000
1
00
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