Text preview for : QUADX_CHANNEL_MASTER.pdf part of Carvin Quad X amp guitar amplifier
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DRIVE 4 90Hz
R1 N/U C1 0.22 R2 1K C2 C3 .01 R4 8.2K R3 8.2K 6 5
P1 A100K
C73 cw R9 330 R10 10K 7 3
R92 C37 .0033
3K Hz
C6 N/U R6 N/U R5 4.7K CH4-4 R7 4.7K 5 C8 Q1 6 330pF
N/UR11 N/U 22K C9 2 .0033
VOLUME 4
P8 1B100K C38 82pF CH4-5 N/U CH4-6 N/U R85 22K CH4-7 N/U 5 6
R40 560K C40 .047 R87 560K R88 560K R42 6.8K
cw
R41 560K C41 10pf R43 6.8K
R38 C74 R93 C71 .022 3 47K R39 C36 2 4.7K
cw
C5 0.1
CH4-8 N/U CH4-3 N/U
P9 B50K C42 R44 22K .022 C45 .0022
A5.B 7 +
A1.B +
C10 H3-4 1 0.1
TO
FROM
A1.A
+
H3-8
330pF 150K R86 100K
.1
C43 .0047 C69 10pF C39 10 R45 15K
cw
BASS
C4 .0022
CASCADE 4
A2.A 1 +
P10 B50K C44 .0022
R46
R8 100K
A2.B 7 +
MID
15K 2 3
S4
R4
C4
C7 .01 C49 P2 A100K .0033 R51 C75 C16 R17 N/U R16 C18 Q2 6 5 39pF
R47 22K
R48 1.5K
cw
P11 B50K C46 .001 5 6
S4
S4
R4
P12 1B100K C50 82pF
A7.A 1 +
R49
TREBLE
1.5K C47 10
R50 cw
cw
DRIVE 3
R20 330 H3-3 C19 .1 TO FROM H3-7 R94 N/U R89 47K C72 .022 3
VOLUME 3
R5633K C52 C51 R54 33K R55 33K 3 Q3 2 56pF
4.7K
50 Hz
R12 N/U C11 0.22 C13 .01 C12
6K Hz
6.8K R52 C48 2 4.7K
A7.B 7 +
N/U
.1 CH3-5 N/U CH3-6 N/U R53 15K CH3-7 N/U 5 6
R15 5.6K R14 5.6K
2 3
C15 10
N/U CH3-8 N/U CH3-3 N/U
A3.A 1 +
C14 .0022
CASCADE 3
A8.A 1 +
10K R18 CH3-4 10K
A3.B 7 +
A8.B
+
JMP5 PRE N/U
C55 10
7
R61 560K C56 R63 P13
cw
R62 560K C57 10pf R64
10
A9.A 1 +
.047
R13 100K
R19 100K
S3
R3
S3
C17 .01
C3
S3
R3
P3 1B100K
R57 100K C53 .01
C3
6.8K
BASS 2/3
B50K C58 .022 6.8K
cw C22
VOLUME 2
H3-2 N/U JMP1 PRE JMP2 POST R21 15K C20 .0068 R22 10K C21 .068 2 3 TO FROM TUBE 2 H3-6 P4 1B100K C26 R26 33K 27pF 6 5
R65
R23 33K
27pF 6 5
C23 0.1
R58 33K
22K C59 .0022 Q4 R60 100K R66 1.5K
cw
CH2 /CH3 IN
H4-1
A4.A 1 + S2 R2
A4.B 7 +
R59 33K
P14 B50K C60 .001 5 6
R67
TREBLE 2/3
1.5K
cw
VOLUME 1
C2
C54 .01
R68 4.7K
C61 10
H3-1 C24 .01 R25 10K C25 .1 2 3
TO FROM TUBE 1
H3-5
C27 10
A9.B 7 +
CH1 /CH4 IN
H4-7 R24 15K
A5.A 1 + S1 R1
A10.B 7 +
H4-9 Used for post cascade cloaking
JMP4 POST JMP3 POST
C76 N/U R95 N/U
GND A GND B CH SELECT
H1-4 R7122K H1-2
H4-2
CH OUT
BASS
R27 560K R28 560K C29 10pf R30 6.8K
R69 10K Q5 R70 10K 2 3
C62 56pF
R4
C63 10
H5-8 H5-7 H5-9 H5-5 H5-3 H5-4 H5-1 H5-2 H5-6 H5-10
EFF RTN 4 EFF SND 4 EFF RTN 3 EFF SND 3 EFF RTN 2 EFF SND 2 EFF RTN 1 EFF SND 1 GND A GND B LAST USED A10 C76 D6 P14 Q7 R95 JMP 6
H4-4 H4-3 H4-5 H4-6
C1 C2 C3 C4
R32 15K R90 560K
MID
R91 560K R29 C31 .0047 P6 B50K
cw
C28
.047
S4 R3 S3
D6
P7 B50K
cw
A6.A 1 + C4 R82
1K
5. 4. 3. 2. 1.
ADDED AS SECONDARY OPERATION. ALL JFET's ARE 2N5638 EXCEPT AS NOTED. ALL DIODES ARE 1N4003 EXCEPT AS NOTED. ALL CAPACITORS ARE IN MICROFARADS EXCEPT AS NOTED. ALL GROUNDS ARE A EXCEPT AS NOTED.
NOTES: UNLESS OTHERWISE SPECIFIED
C70 10pF R33 15K 2 3
6.8K
C30 R31 22K .022 C33 R35 1 1.5K .0022
R72 100K R73 10K R74 10K Q6 C64 .01 R75 100K C65 .01 R78 C66 .01 100K
R2 S2
CARVIN
Schematic 84-00101 DRAWN BY:
12340 WORLD TRADE DR. SAN DIEGO, CA 92128 (619) 487-1600 FAX 487-6629
R34 22K
C32 .0022
P5 B50K
cw
C3 R81
D1 1K
R36 1.5K
D5
A10.A
+
R1 S1
Quad X-Amp
Channel Master
DATE: 24JUN91 DATE:
C2
C35 10 D2 R80 1K R79 1K 15 VDC D3 R76 10K R77 10K D4 Q7
TREBLE +15VDC -15VDC
H1-1 R84 10 R83 10 H1-3
R37 4.7K
C34 .001
6 5
John L. Murphy
+15 VDC 15 VDC
A6.B 7 +
C1
APPROVED:
H4-8 JMP 6
GND A
PCB 30-00101 NO: ASSY. 80-00101 NO: REVISED BY:
REV:
C M 2APR96
+
+
C67 10
C68 10
REV:
C. McEUEN
DATE: