Carvin x quad schematic
EQ OUT
10µF
V+
TO IC1-4 PIN 8
V–
TO IC1-4 PIN 4
NOTES: UNLESS OTHERWISE INDICATED
H7-6 H7-7
R3
C4
C3
R4
P1
10K
A1.B
6
–
5
+
7
R5
R7
C6
C5
R8
P2
10K
A2.A
2
–
3
+
1
R9
R11
C8
C7
R12
P3
10K
A2.B
6
–
5
+
7
R13
R15
C10
C9
R16
P4
10K
A3.A
2
–
3
+
1
R17
R19
C12
C11
R20
P5
10K
A3.B
6
–
5
+
7
R21
R6
R10 R14
R18
R22
1. ALL RESISTORS IN OHMS, .25W.
3. ALL OP AMPS ARE TYPE 4558.
C18
C19
2. ALL CAPACITORS IN µF.
30-00105
80-00105
PCB 30-00105
Quad X-Amp EQ H7-8
N/U N/U
QC1
D1
R29
POWER
R30
D2
Not Used
.22 .22
.22 .22
15K
3.9K
27K
8.2K
9.1K
2.7K
18K
10K
.022
.022
.01
.01
7.5K
7.5K
R31
R32
470Ω
100K
15K
18K
7.5K
15K
13K
15K
.0033
.0033
27K
12K
3.9K
2.2K
1K
Not Used
.01 .01
LAST USED LIST
SYM
A
C
D
H
P
1-2
1-5
1-4
1-19
R 1-32
H2-10
H2-9
H2-8 H2-7 H2-5 H2-6 H2-4
H2-1
H2-3
H2-2
4. H2 LOCATES THE RIBBON SPLITTING THE CIRCUIT BOARD.
EQ IN
75Hz
+
150Hz
+
+
+
C1
82pF
R2
H7-1
R1
10K
–
10K
2
–
A1.A
+
3
C2
1
10µF
–
H7-4 H7-2 H7-5
R26
10Ω
R27
10Ω
+
C16
.01µF
C17
.01µF
+
–
1K Hz 3K Hz
R28
10K
C13
82pF
R23
68K
2
–
A4.A
+ 1
3
C14
82pF
R25
10K
6
–
A4.B
+
5
–
C15
7
+
–
6K Hz
H7-3
R24
10K
2,7
1155 INDUSTRIAL AVE.
ESCONDIDO, CA 92029
C
ARVIN
(619) 747-1710
FAX 747-9065
Quad X-Amp
DRAWN BY:
APPROVED:
PCB
NO:
ASSY.
NO:
REVISED BY: DATE:
C. McEUEN
J. KENNEDY
DATE:
DATE:
REV:
REV:
GRAPHIC EQUALIZERSchematic: 84-00105
20NOV91
A
C
25AUG92
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