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ROLLS CORPORATION
5968 S 350 W
Murray, Utah 84107
1
REQ131.SCH A
17-Sep-2007
Title
Size: Document Number:
Date:
Rev:
Sheet of
REQ131 31 BAND EQUALIZER
Rb
POWER
CUT
+12V
-12V
-12V
-12V
+12V
-12V LPF
ALL OP AMPS BA4560 OR EQUIV
+12V
+12V
BOOST
CUT
-12V
BOOST
-12V
TO 15 MORE SECTIONS TO 14 MORE SECTIONS
U# U4A U4B U5A U5B U6A U6B U7A U7B U8A U8B U9A U9B U10A U10B U11A U11B
HZ 20 25 31.5 40 50 63 80 100 125 160 200 250 400 500 630
U#
HZ 800 1K 1.6K 2K 2.5K 3.1K 4K 6.3K 10K8K5K 12.5K 16K 20K
HPF
12A 12B 13A 13B 14A 14B 15A 15B 16A 16B 17A 17B 18A 18B 19A
CA
CB
RGA
CC
CD
RGB
.47 .27 .27 .22 .15 .12 .1 .082 .068 .047 .039 .033 .027 .022 .015 .012
.068 .068 .047 .039 .033 .027 .022 .015 .012 .01 .0082 .0068 .0047 .0039 .0027.0039
1M 1M 1M 910K 1M 910K 1M 1M 1M 1M 910K 1M 910K 910K 1M
315
.039 .033 .027 .022 .015 .012 .01 .0082 .0068 .0056 .0039 .0033 .0027 .0022 .0018
.022 .015 .012 .01 .01 .0068 .0047 .0033.0039 .0022 .0022 .0018 .0012 .001 680P
110K 100K 91K 91K 100K 110K 100K 91K 100K 91K 91K 100K 91K 100K
1.25K
1M 91K
+12V
+12V
+12V
-12V
-12V
J1
PC 1/4
J2
RCA PC
R3
10K 1%
j4
PC 1/4
R2
10K 1%
R1
10K 1%
D11
1N4001
D12
1N4001
D14
1N4001
1 2
3
j3
XLR F PC
C2 120PF
D1
D2D3D4
D5
D15
LDSG
4
H1D
HD14
4
H3D
HCN14
5
H3E
HCN14
2
H4B
2
H2B
C37
120PF
2
H3B
2
H1B
1
H1A
1
H3A
R7
10K
R8
4.7K
R9
4.7K
R15
10K
C5
120PF
C8
10UF
C9
1U
C101
10U
123456789
U21
BA6144
C52
120PF
8
H4H
8
H2H
13
H6M
HCN14
13
H5M
HD14
14
H6N
HCN14
14
H5N
HD14
1
2
3
SW1A
DPDT
R4
10K 1%
5
H1E
HD14
R81
4.7K
R83
100K
R84
51
R86
100K
R87
10k
3
H3C
HCN14
3
H1C
HD14
11
H5K
HD14
11
H6K
HCN14
12
H5L
HD14
12
H6L
HCN14
R89
10K
R14
100
R12
100
R90
100
D?
LDRR
R82
4.7K
C1
120PF
R88
10K
RFA
2K
RFB
470
C3
.27
R6
1K
C6 .0027
C7
.001
C91
10U
R5
3.3K
C4
.1
R?
33K
CD
RGB
CC
CA
RGA
CB
46
5
P1B
P100KC
1 3
2
P1A
P100KC
46
5
P3B
P100KC
13
2
P3A
P100KC
P2
P100KW
P14
100KW
P20
100KW
SW2
SW SPST
PL1
PLUG AC MALE
I
1
G
2
O
3
U22
7812
I
2
G
1
O
3
U23
7912
2
3
1
4
U1A
4560
2
3
1
4
U2A
4560
6
5
7
8
U2B
4560
6
5
7
8
U3B
4560
2
3
1
4
U20A
4560
6
5
7
8
U20B
4560
6
5
7
8
U1B
4560
6
5
7
8
U19B
4560
2
3
1
4
U3A
4560
2
3
1
4
U#A
4560
2
3
1
4
U#A
4560
C90
1U
T1
MCI 407-4024
R92
10K
R91
10K
R17
3.3K
R16
3.3K
R10
10K
R13 33K
R11
33K
R93
10K
4
5
6
SW1B
DPDT
C93
10U
R85
51
R94
100K
J6
RCA PC
R95
51
C92
503
D13
1N4001
1 2
3
J5
XLR JACK M
C89
1000UF 16V
C88
1000UF 16V
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