Crown FM30 - Page 71

6–5
Reference Drawings
L OUT
+5V
-5V
D3
D4
FLAT A=0
75uSEC A=1.0
50uSEC A=0.67
25uSEC A=0.33
GAIN: U5, Pin 2 to U8, Pin 2
(No Hi-band gain reduction)
C11
220PF
R35
240K
+12V
C12
0.1
R26
100K
R38
1K
R31
24.9K
1
R34
24.9K 1
(+/-5.0V PK)
GAIN REDUCTION VOLTS P-P
THRESHOLD 1.1
10DB 3.5
20DB 11
D2
R17
360K
L LP2
L LP1
+12V
-12V
C6
.047
7
9
1
12
13
2
10
1
4
31
1
U5
AD632
R1
100
R22
11.3K
1
6
5
7
U4B
TL072
R24
24.9K
1
C5
.047
R20
75K
1
R13
2.0K
1
R23
100K 1
L VU
L IN1
L IN2
+12V
-12V
C3
1.0
C1
100PF
C2
100PF
R2
1K
R3
1K
R9
1K
R4
24.9K
1
R5
24.9K
1
R6
24.9K
1
C4
1.0
R7
24.9K
1
2
3
1
8
4
U1A
TL072
6
5
7
U1B
TL072
R8
30.1K
1
16
7
8
R44
24.9K
R42
24.9K
R43
24.9K
R45
24.9K
/+6DB
/+12DB
R VU
R IN1
R IN2
+5V
+12V
-12V
+5V
-5V
C16
1.0
C15
1.0
C13
100PF
C14
100PF
R40
1K
R41
1K
R48
1K
2
3
1
8
4
U2A
TL072
6
5
7
U2B
TL072
R12
20K 1
R49
20K 1
R47
30.1K
1
X0
12
X1
14
X2
15
X3
11
Y0
1
Y1
5
Y2
2
Y3
4
INH
6
A
10
B
9
X
13
Y
3
U3
74HC4052
R10
47K
R11
47K
(+/-5.0V PK)
R60
24.9K
2
3
1
8
4
U7A
TL072
R61
24.9K
C50
47PF
R LP2
R LP1
+12V
+12V
+12V
-12V
-12V
-12V
C8
1.0
POLY
C20
1.0
POLY
R59
100K 1
R58
11.3K
1
D1
D7
D8
2
3
1
8
4
U4A
TL072
R14
1.0K
1
R15
499
1
R98
100
R51
1.0K
1
R52
499
1
6
5
7
U7B
TL072
R25
24.9K
1
C17
.047
C18
.047
R46
360K
7
9
1
12
13
2
10
1
4
31
1
U6
AD632
R16
499
1
R53
499
1
R56
75K
1
R50
2.0K
1
R87
3.3K
2
1
3
SW1A
R123
50K
PRE-EMP.
PRE-EMP.
D6
D11 D12
R73
24.9K
6
5
7
U10B
TL072
R67
24.9K
R70
24.9K
R72
24.9K
R36
24.9K
R37
24.9K
D5
Q1
2N5087
R64
OPEN
R28
OPEN
C23
220PF
R71
240K
C49
47PF
+12V
+12V
+12V
-12V
-12V
-5V
-12V
-12V
C24
0.1
C29
0.1
C22
.0027
POLY
Q2
2N5087
R62
100K
R29
10K
R65
10K
R33
10K
R69
10K
R32
12K
7
9
1
12
13
2
10
1
4
31
1
U8
AD632
R68
12K
7
9
1
12
13
2
10
1
4
31
1
U9
AD632
2
3
1
8
4
U10A
TL072
R39
1K
R74
1K
R81
1K
R90
1K
2
3
1
8
4
U12A
TL072
6
5
7
U12B
TL072
R30
49.9K
1
R66
49.9K
1
C10
.0027
POLY
D10
D9
R OUT
+5V
-5V
R109
3.3K
-5V
C35
1.0
R107
10K
R106
1K
R105
1M
D18
560
LIGHT
3mV/DB
HEAVY
.25V/DB
E
B
C
R650
POT LOCATED
ON DISPLAY PCB
FLAT
25uS
50uS
75uS
D16
D17
R77
3.3K
100K
1
1
2
2
3
3
4
4
8
8
7
7
6
6
5
5
Q7
LM394
Q3
2N5210
PROC A
PROC B
PROC C
TEST
+5V
+12V
-12V
C33
.047
C34
OPEN
C30
1.0
C31
100PF
C32
100PF
R76
10K
R93
10K
R101
10K
R100
120
R92
1K
D15
2
3
1
8
4
U14A
TL072
R104
OPEN
R99
3.3K
D21
R75
2.4K
R94
20.0K
1
R95
20.0K
1
R96
20.0K
1
R97
49.9K
1
R112
49.9K
1
R115
49.9K
1
R116
49.9K
1
1 2
3 4
5 6
7 8
JP1
HEADER 4X2
R103
0
3mV/DB
-5VDC at 0DB GR
4.1V at 20 DB GR
7
E
B
C
D19
R89
330K
D13
1
1
2
2
3
3
4
4
8
8
7
7
6
6
5
5
Q5
LM394
+5V
-5V
+5.00V
+5V
+12V
-12V
+5V
-5V
VDD
VSS
VEE
C46
0.1
C47
0.1
C48
0.1
C25
100PF
C26
100PF
R78
91K
R88
10M
R91
10M
R82
120
C28
1.0
POLY
2
3
1
8
4
U13A
TL072
C27
.047
R86
3.3M
D20
R80
3.3K
R111
49.9K
1
C38
1.0
C39
1.0
D14
YEL
R85
0
R79
49.9K
1
R83
10K
5
4
6
SW1B
IN
2
GND
4
VO
6
TRM
5
U17
REF02
2
3
1
8
4
U18A
TL072
+12V
-12V
+12V
-12V
+12V
-12V
C36
.01
C37
.01
C42
0.1
C43
0.1
C45
0.1
C44
0.1
R121
10.0K 1
R122
100
6
5
7
U18B
TL072
R119
4.7K
R120
100
C40
1.0
C41
1.0
R118
10.0K
1
6
5
7
U13B
TL072
6
5
7
U15B
TL072
C20A
OPEN
C8A
OPEN
R84
49.9K
1
R110
49.9K
1
.25V / DB
0.25V / DB
2
3
1
8
4
U16A
TL072
2
3
1
8
4
U15A
TL072
BR GR
+12V
+12V
-12V
-12V
6
5
7
U14B
TL072
6
5
7
U16B
TL072
R113
100
R117
100
R102
49.9K
1
R114
49.9K
1
NOTES :
1. ALL RESISTORS ARE IN OHMS, 1/4W, 5% UNLESS OTHERWISE SPECIFIED.
2. ALL CAPACITORS ARE IN MICROFARADS UNLESS OTHERWISE SPECIFIED.
SCM, FM AUDIO PROCESSOR
HI GR
3. ALL DIODES ARE 1N4148 UNLESS OTHERWISE SPECIFIED.
103202
L OUT
R OUT
12
34
56
78
910
J2
RECEPT 5X2
+12V
-12V
/+6DB
/+12DB
R VU
L VU
+5.00V
PROC A
PROC B
PROC C
BR GR
HI GR
TEST
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
J3
RECEPT 13X2
L IN1
L IN2
R IN1
R IN2
L LP1
L LP2
R LP1
R LP2
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
J1
RECEPT 10X2
Audio Processor