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Operating Manual - DPX-100 Graphic Equalizer - Compressor/Limiter
1 2 3 4 5 6 78
A
B
C
D
E
8
7654321
E
D
C
B
A
B
APPROVED: Dw
g
#
Size
Drawn B
y
Rev.
C
S:\En
g
ineerin
g
\CLIENT98\1551\10s1551c-3.SCH
10S1551
DPX-100 MINI-EQ + COMPRESSOR/LIMITER
James B Franks
Sheet # of
34
847 Holt Road
Webster, NY 14580-9103
Phone: Fax:
(716) 872-0010
(716) 872-0739
Print Date
3-May-2002
11:42:28
A->B @ 157%
C
PEAK BUS 1
PEAK BUS 2
THRES
SIG
GAIN METER
INPUT METER
OUTPUT METER
out
SW6
45P1501
out
SW7
45P1501
L
G
N
J10
47P1413
D19
1N4003
D20
1N4003
D21
1N4003
D22
1N4003
C85
1000u
C86
1000u
In
1
2
Out
3
U19
7818
In
2
1
Out
3
U20
7918
D23
1N4003
C81
1.5u
C82
1.5u
D24
1N4003
D25
1N4003
-18
C47
.1U 100V
C48
.1U
C49
.1U
R144
1.5K
+18
J11
KEYSTONE
F1
1/2 AGC
110VAC 220VAC
2 11
3 10
4
5
8
T1
51P7308
R145
10K
R146
3.3K
D16
1N754
D10
1N270
C50
220P
Q2
2N4125
C51
.1U
+18
+18-2
VCC +
FOR IC 5
R147
1.5K
5
6
4
SW1B
45P2600
D26
LIMITER(G)
D27
POWER(Y)
+18
OUT
Q7
2N4123
Q8
2N4123
R148
390K
R149
2.4K
R150
62K
C52
.1U
D28
+20(R)
R151
1.5K
PEAK BUS 1
SIG IN
5
MODE
9
RLO
4
RHI
6
REF ADJ
8
V+
3
V-
2
REF OUT
7
LED10
10
LED9
11
LED8
12
LED7
13
LED6
14
LED5
15
LED4
16
LED3
17
LED2
18
LED1
1
LM3915
U21
LM3915
D29
+6(Y)
D30
+3(Y)
D31
0(Y)
D32
-3(G)
D33
-6(G)
D34
-9(G)
D35
-12(G)
D36
-15(G)
D37
-18(G)
D38
-21(G)
+18
J13/2A
J13/2B
J13/2C
J13/2D
J13/2F
J13/2G
J13/2E
J13/2H
J13A
J13B
J13C
J13D
J13F
J13G
J13E
J13H
2
3
1
SW4A
45P2600
INPUT METER
OUTPUT METER
-18
+18 +18
-18
R152
4.7K
D17
1N964
-18
+18
R153
2.4K
R154
2.4K
3
2
1
8 4
U5A
4560
D11
1N4148
D12
1N4148
R155
1K
R156
100K
R157
100K
C83
1.5U
OUT
METER SELECT
OUTPUT LEVEL (db)
Q3
2N4125
Q9
2N4123
R158
560
R159
15K
R160
100K
R161
1.5K
D13
1N4148
D14
1N4148
C84
1.5U
C76
47U
D39
(Y)
+18
THRES
SIG IN
5
MODE
9
RLO
4
RHI
6
REF ADJ
8
V+
3
V-
2
REF OUT
7
LED10
10
LED9
11
LED8
12
LED7
13
LED6
14
LED5
15
LED4
16
LED3
17
LED2
18
LED1
1
LM3914
U22
LM3914
D40
-20(R)
D41
-18(R)
D42
-16(R)
D43
-14(R)
D44
-12(R)
D45
-10(R)
D46
-8(R)
D47
-6(R)
D48
-4(R)
D49
-2(R)
+18
J14A
J14B
J14C
J14D
J14F
J14G
J14E
J14H
J14/2A
J14/2B
J14/2C
J14/2D
J14/2F
J14/2G
J14/2E
J14/2H
GAIN METER
-18-18
-18 -18
+18+18
+18
R162
4.7K
D18
1N964
-18
R163
4.7K
R164
2K
13V
GAIN REDUCTION (db)
C53
.1U
C54
.1U
C55
.1U
C56
.1U
C57
.1U
C58
.1U
C59
.1U
C60
.1U
C61
.1U
C62
.1U
Q10
2N4123
Q11
2N4123
Q12
2N4123
Q4
2N4125
D50
CLIP(R)
R165
1.5K
R166
62K
R167
390K
R168
2.4K
+18
C63
.1U
PEAK BUS 2
C77
47U
R169
63.4K
R170
3.92K
R171
68
R172
1.58K
Q5
2N4125
R173
19.6K
R174
1.5K
D51
SIG(G)
-18
+18
C78
47U
SIG
J12
KEYSTONE
J15
KEYSTONE
COMPRESSOR/LIMITER METERS
EQ METERS
+19 dBu
-20dBu
D52
1N4003
J16
KEYSTONE
J17
KEYSTONE
J18
KEYSTONE
J19
KEYSTONE
-18
+18-2
J21
KEYSTONE