C Audio srx schematic
File:
D:\PROTEL\SRX\37&3601\3701DRV.S01
Drawn By:
CN2/12 (ch A)
A.C.
CN2/15 (ch B)
LEVEL
50K lin
CN2/13
CN2/14
2
COAX2SYM
Star
Sheet 3
CN2/10 (ch A)
CN2/17 (ch B)
+18V
-18V
to R42 (ch A)
to R43 (ch B)
C80A
100n
C79A
100n
CN3/5
Sheet 5
SHEET 4
C51A
TO ch B
4
COAX2SYM
HT RAIL +
LABEL
R88A
2k
TO SHEET 3
R93A
33R
R92A
33R
R95A
33R
R96A
33R
HT RAIL -
LABEL
TO SHEET 3
N DRIVE
FEEDBACK
TO SHEET 2
P DRIVE
LABEL
LABEL
LABEL
Bridge
B A scn
R125B
9k1
C52A
100p
R121A
R54A
2
3
R52A
4k7
R51 (A+B)=
R53 (A+B)=
R51 (A+B)=
R53 (A+B)=
R101A
6K8/1W
R102A
6K8/1W
+18
-18
R51A
C73A
47u
160V
C74A
47u
160V
13k
74
6
SW1a
10k
*
channel B only
IC1A
TL071
R55A
47p
22k
R50A
8k2
SRX3701
SRX3601
C71A
D22A
D23A
18V
18V
100u
35V
C72A
100u
35V
6k2
R120A
0 ohm
channel A only
VR2A
R53A
*
9K1
0 OHMS
51K
1K5
HT RAIL +
C75A
100n
C76A
100n
HT RAIL -
R58A
100k
C53A
220u
C54A
SHEET 4
330p
To R44 (R49 ch B)
SHEET 3
R59A
750R
D11A
1N4148
D12A
1N4148
R62A
100R
R60A
30k
R63A
100R
TR52A
1085
R67A
10k
R69A
2K7
R61A
330R
TR51A
BF423
R68A
10k
R70A
2K7
TR53A
1085
R122A
15k
R64A
15k
25V
R66A
750R
C56A
100u
C57A
100n
R7A
22R
C55A
10p
R65A
1k
SHEET 4
R76A
10K
To R45 (R50 ch B)
C58A
33p
R72A
100k
TR59A
BF422
R73A
150
TR54A
BF423
TR56A
BF422
C59A
100n
TR58A
BF422
R77A
150R
C62A
33p
TR57A
BF422
R74A
150
TR55A
BF423
R75A
47R
C60A
10n
C61A
100n
R78A
4K7/1W
TR60A
BF423
R80A
39K/
1W
IQ
ADJ
R83A
4K7/1W
TR64A
BF422
R81A
2K7
R82A
2K
VR1A
1K
R79A
150R
TR61A
BF423
D14A
9V1
TR63A
BF422
D13A
9V1
R84A
150R
C63A
100n
C64A
47u
100V
TR62A
BC184L
C65A
47u
100V
D15A
1N4148
D17A
6v8
D18A
1N4148
C66A
100n
D16A
6v8
R90A
680R
TR69A
BF423
TR67A
BF422
R89A
680R
R91A
2k
R108A
680R
R110A
680R
TR70A
BF423
TR68A
BF422
CN2/11 (ch A)
CN2/16 (ch B)
SHEET 1
Star
SHEET 3
Feedback
LABEL
3
R1 (ch A)
R2 (ch B)
SHEET 4
C69A
33n
R114A
10R/2.5W
R87A
L1A
LABEL
R57A
20k
CN2/4 (ch A)
CN2/23 (ch B)
R56A
10R
180K
RL1A
T90
Title
A2
Date: 1-Jul-1999 Sheet of
O/P Grounde
O/P Hot
LABEL
SRX36&3701 DRIVER
Number RevisionSize
C1068
1
1 6
F
N GATE
P GATE
R39A
330R
R40A
220R
C21A
4n7
R11A
470R
TR9A
BUZ901D
R1A
470R
C11A
10P
TR1A
BUZ906D
G
FUSELINK
R14A
470R
TR12A
BUZ901D
R4A
470R
C14A
10P
TR4A
BUZ906D
G
SD
C12A
10P
R12A
470R
TR10A
BUZ901D
TR2A
SD
R2A
470R
BUZ906D
G
SD
R15A
470R
TR13A
BUZ901D
R5A
470R
C15A
10P
TR5A
BUZ906D
G
C17A
10P
R17A
470R
D2A
TR15A
BUZ901D
TR7A
SD
R7A
470R
BUZ906D
G
SD
4004
D5A
4004
FUSELINK
HT RAIL +
C
C
TO SHEET 1
C
FEEDBACK
CON
HT RAIL -
E
D
C
SHEET 2
STAGECHANNEL A OUTPUTDRAWING SHOWS
COMPONENT NUMBERSCHANNEL B HAS SAME
BBUT WITH THE SUFFIX
SRX3601 output stage is as above but TR9A/B & TR1A/B are not fitted
Title
A3
Date: 1-Jul-1999 Sheet of
SRX 37&3601 o/p
Number RevisionSize
C1068
B
A
2 6
SHEET 3
Mounted on SoftStart
DBR1
FB5006
C41A
F
LABEL
A
HT RAIL +
C41B
ALL CAPACITORS
7500uF/120V
E
C1
C4
C5
BROWN
RED
BLUE
0V
220V
240V
18v
18v
A.C.
A.C.
TO SHEET 4
DBR2
FB5006
POWER SUPPLY
C42A
C43A
C44A
C42B
C43B
C44B
3
HT RAIL -
LABEL
A
LABEL
B
HT RAIL +
HT RAIL -
LABEL
B
D
C
RGND
10R/2.5W
GROUND LIFT SWITCH
STAR POINT
Title
SRX37&3601 PSU
Number RevisionSize
A3
Date: 1-Jul-1999 Sheet of
B
A
1
3 6
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