Carvin B-800 Schematic
25V FET
22µF
R88
6.8K
R1
365K
C50
1µF
Q18
+
R89
R93
1K
+
C45
R90
10K
150K
R122
R3
10K
YEL
D1
R106
1K
n/u
C54
DRIVE
1M
passive/active
S1.A
47K
R114
C55
C58
22µF
+15VDC
S1.B
470K
R126
22K*
+
C52
1µF
Q12
C12
+
+
1µF
R123
1K
P12
cw
B100K
R40
39pF
C34
47K
2
C17
R21
H10.A
H10.B
H10.C
H10.D
Ð
A2.A
+ 1
+
22µF
3
R152
4.7½
+15VDC
R153
4.7½
-15VDC
12340 World Trade Drive
San Diego, CA 92128
(858) 487-1600
fax 521-6032
carvin.com
AGND
FROM P.S.
c
+
1µF
+15VDC
GND
-15VDC
B800 Head / Biamp Combo
System Master
DRAWN BY:
E. PETERSEN 01SEP04
APPROVED:
PCB
30-41520
NO:
ASSY.
(Head) 80-41521
NO:
(Combo) 80-41522
REVISED BY:
E. PETERSEN
4. ADDED AS SECONDARY OPERATION.
2. ALL CAPACITORS IN MICORFARADS, EXCEPT AS NOTED.
1. ALL RESISTORS IN OHMS
NOTES: UNLESS OTHERWISE SPECIFIED.
+15VAMP
+15VAMP
R314
47K
8
2
Ð
A20.A
1
+
R315
3
1.8K
R73
100
+15VAMP +15VAMP
R329
3.3K
D10
D15
1N914
CURLIM
R319
22K
R312
1.5K
R69
9.1v 9.1v
4
-15VAMP
R311
47K
6
D310
Ð
A20.B
+ 7
5
R331
100K
220
D111
1N914
+
C313
22
R320
10K
R321
C317
5.6K
.01µ
DATE:
DATE:
REV:
A
REV:
001
001
DATE:
14FEB05
Z1Z2
R2
Q3
TIP32C
3.3K
R4
4.7K
-24 RLY
+15VAMP
R323
27K
6
D312
Ð
A21.B
+ 7
1N914
5
R322
470K
R14
R127
22K*
365K
R131
150K
+
C53
1µF
R97
15K*
.022µF
C49
22µF
+
1µF
+
C67
R95
10K
C68
R116
6.8K
R72
6.8K
R38
4.7K*
C39a
0.001µF
R75 R87
4.7K
TREBLE
4.7K
LOW MID
0.0022µF
1M
R115
+
C57
22µF
C39
cw
P18
C38a C63a
B50K
560pF
C38
C35a
0.022µF
C35
cw
B50K
P15
C18a
R79
47K
C18
+
+
C59
C61
22µF
22µF
TOROID SECONDARYTOROID SECONDARY
FAN
H12.A
H12.B
C310
0.1µF
FAN G
PROTECT
R326
3.3K
R325
+15VAMP
D17
R309
68K
R330
Q302
1K
5550
3.3K
2
Ð
A21.A
+
3
+
C318
R327
22
22K
CLEAN
Q19
R77
15K
25V FET
H7.B
H7.A
H7.G
H7.H
H7.I
H7.C
H7.D
H7.E
H7.F
8
+15VAMP
-15VAMP
4
YEL
YEL
YEL
YEL
RED
RED
GRN
GRN
GRN
R124
6.8K*
R125
10K*
INPUT CLIP
4.7K
R86R76
4.7K
C15
39pF
1M
R15
6
Ð
A2.B
+ 7
5
C520
SMB
R324
1
10K
R31
C30
22µF
D500
3A
D501
D502
D503
D504
1M½
R121
C51
365K
n/u
+15VDC
D2
R24
RED
470½
Q10
R60 R74
4.7K
HI MID
4.7K
BASS
0.01µF
STD7
TOOLING HOLES
STD8
MMBT5550 NPN
1K
R501
+
1000µF 35V
C69
1000µF/25V
Z500
5.1v
LO +
++
C508
2200
35V
C509
2200
35V
LO -
D505
C507
D506
1000
35V
BR1
++
C511
C512
10KµF 100V
RELAY+
5401
Q4
R25
0.0022µF
Q500
9.1v5.1v
Z501 Z502
VR1
7815
7915
VR2
+
LO +
10KµF 100V
LO -
E6
+
P17
B50K
B50K
1M
C16
100K
0.0022µF
cw
0.047µF
cw
P14
C23a
C23
1µF
D.I.PRE
100K
R99
R26
22K
C33a
C33
C32a
C32
C31a
C31
R64
47K
R18
C521
C522
+
.1
1000µF/25V
H13a.B
H13a.A
.1µ
++
C505
H13a.C
.1µ
H13a.D
C506
H9A.B
H9A.A
H1A.A
H1A.B
H1A.C
H1A.D
E1
R132
15K*
R62
2.2K
25V fet
+15v
GND
-15v
GND
25V FET
4.7K
1M
6
5
H1B.A
H1B.B
H1B.C
H1B.D
R65R61
4.7K
C37
39pF
R119
Ð
A3.B
+ 7
H9B.B
H9B.A
TO FRONT PCB
2.2K*
R27
R10
10K
thru
0.22µF/63v
C5
Q13
C19
22µF
FAN G
V+
V+LOW
V-LOW
V-
R28
1M
R5
22K*
39pF*
R6
C3
470K*
R41 R43
3.3K 3.3K
0.0047µF
MID
4.7K
SUB BASS
0.047µF
1M
POS INPUT
NEG INPUT
-24 RLY
B50K
C22
R19
R155
thru
0.22µF/63v
C1
C20a
.01µF
C20
cw
P16
C22athru
cw
B50K
P13
C24a
C24
R151
10K
10K
0.1µF
C519
C63
R518
120pF
H6.A
H6.B
H6.C
H6.D
AGND
R42
10K
R46
47K
4.7K
C518
120pF
+15VAMP
8
2
Ð
A500.A
1
+
3
4565
4
-15VAMP
R519
4.7K
target
#1318 #1319
4.7K
39pF
1M
2
Ð
A3.A
+ 1
3
1 CLIP
INPUT
input
a gnd
H5.A
H5.B
J11
H5.C
H5.D
1K
R23
R8
1M
R52
10K
R53 R57
2.2K 2.2K
22µF
C26
R55
+
47K 47K
EFF -
D33
R83
47K
MASTER
Q17 Q16
R117
1M
.047µF
R47R33
C40
R20
R520
1K smt 1/4w
R521
100½ smt 1/4w
R500
2.2K
5550
MUTE-
AMP STDOFF
Q2
33K
150K
R502
R504
ST1
ST2
D101
H2A.A
H2B.A
+15VAMP
D3
Protect
+15VDC
C2
+
22
D100
+15VDC
AGND
-15VDC
H2A.B
H2A.C
H2A.D
H2B.B
H2B.C
H2B.D
CLEAN
-15VAMP
R533
2.2K
R532
150K
R424
100
+
C101
C28C27
.01
P11
B50K
22
2
A1.A
3
Yel
C43
39pF
Ð
+ 1
4.7K
R538
C576
120pF
5
A500.B
6
C577
R534
4.7K
Red
R130
68K
+
Ð
120pF
R118
R109
10K
POWER
R58
10K
1M
cw
MASTER VOLUME
D11
Clip 1
H2A.F
H2A.E
H2B.E
H2B.F
1 CLIP
PROTECT
R537
7
1K½
R535
1N914
D102
OP4.A
D103
R56
EFF +
R539
4.7K
1K
D518
D517
1N914
R541
4.7K
D4
H2A.G
H2B.G
POS INPUT
+15VAMP
-15VAMP
-15VDC
EFFECTS
10K
C47
22µF
C48
22µF
+15VDC
+
EFF -
EFF
D5
R110
10K
GRN
MUTE
RED
EFF +
MUTE-
D6
R111
10K
-15VDC
+
A8.A
A8.B
A8.C
A8.D
R91
4
Ð
+2
5
6
Ð
+1
7
10
Ð
+13
11
8
Ð
+14
9
H11A.J
R68
10K
39pF
C36
2
Ð
A5.A
+1
3
39pF
10K
R80
C29
10K
R71
Q8
D.I.PRE
R11
MUTE-
C46
R92
10K
6
5
R98
10K
Ð
A1.B
+ 7
120pF
47K
C6
R9
.01
1M
R7
AGND
100½
R67
10K
100K
R81
39pF
C41
6
Ð
A5.B
+ 7
5
+15VDC
-15VDC
AGND
H11A.I
H11A.H
H11A.G
H11A.D
H11A.C
H11A.B
H11A.A
SEND
RETURN
H2A.H
10K
POS INPUT
NEG INPUT
R157
R158
10K
H2B.H
NEG INPUT
C582
R556
R546
560
100
100
Q504
MJD350
R503
Q501
680½
5550
1K
R523
R547
680½
Q506
R548
560½
PB1
cw
.047µF
TIP31C NPN Flat
Q908
MJE15032
Q510
Q512
Q514
Q513
R512
.22½
R513
.22½
R514
.22½
5W
R515
.22½
5W
Q515
R550
R510
.22½
22½
5W
1W
C580
R511
R551
.22½
22½
5W
1W
Q511
Q909
MJE15033
500
Q505
MJD340
C584
560
R559
R549
100
100
R540
470½
R542
1K
Q502
5550
R543
1K
R544
1K
Q503
5401
R545
1K
HF NEG
HF POS
S3.A S3.B
R94
10K
-15VDC
H3A.A
H3A.B H3A.D
R96
H11A.F
10K
R112
47K
R113
10K
H11B.J
BAL GND
H11B.I
H11B.H
H11B.G
H11B.D
H11B.C
H11B.B
H11B.A
GND R
BAL GND
H3B.A
H3B.B H3B.D
MUTE
S2.A
BAL GND
R70
100½
GND R
+15REAR
-15REAR
R161
R163
10K
H11A.E
S2.B
R49
2
10K
R66
Ð
10K
A7.A
+ 1
3
C25
10K
39pF
R136
R13
C60
+15REAR
-15REAR
10K
R12
R32
10K
D.I. PRE-POST
S4.A
R82
10K
S4.B
C56
10K
R108
10K
R160
10K
10K
C72
39pF
2
Ð
A6.A
+ 1
3
C74
39pF
R162
GND R
V+
HBI1.B
HBI1.A
H11B.F
H11B.E
10K
R39
C65
39pF
10K
39pF
8
6
Ð
A7.B
7
+
5
4
GND R
DIRECT LEVEL
B50K
C14
39pF
6
Ð
A4.B
+ 7
5
39pF
R85
10K
B50K
P21
cw
C107 C108 C109
0.001µF 0.001µF 0.001µF
FOOT SW
J70
SPKR GND
MUTE REAR
10K
R50
Q5
P1
cw
2
3
C44
R165
47K
A4.A
C62
22µF
R120
2.2K
R1108
10K
+
R1110
1M
C7
R22
470½
22µF/50v
SPKR GND
R84
10K
R34
470½
39pF
8
+15REAR
Ð
1
+
4
-15REAR
R29
22K
GND R GND R
+
R54
470½
R51
470½
C42
0.1µ
R36
100K
R164
100K
TUNER
EFF SEND
5401
+
C66
22µF/50v
6
5
EFF RETURN
R1111
47K
R1109
10K
Q6
DIRECT
1
2
3
+
R37
100K
8
+15REAR
Ð
A6.B
7
+
4
-15REAR
100½
R44
500 ms delay
J71
J72
GND R
MUTE REAR
J75
SPKR GND
R30
100½
R166
100½
.047250VAC
C9
+15REAR
K1
-15REAR
J73
-15REAR
S5.A
100½
R35
.001µF
C8
SPKR GND
H3B.C
H3A.C
Q516
XJW21194
5W
5W
CURLIM
R105
R103
10K
10K
XJW21193
V-
C64
D508 SMB
R576
47K
SMB
D509
R101
+15VAMP
120pF
10K
R577
R579
100K
2
3
R154
10K
10K
8
Ð
A100.A
+
4
-15VAMP
100K
R578
C70
120pF
4565
C581
1
QC2
D16
R138
68K
C176
120pF
5
+
A100.B
Ð
6
C177
120pF
R134
4.7K
D12
D14 D9
OUT 1
-24 RLY
+15VAMP
C182
R146
R156
100
R147
680½
R148
270½
R149
100
560
100
Q104
5401
Q105
5550
C184
560
R159
100
R140
470½
Q102
5550
R142
1.5K
R143
1K
R144
1K
Q103
5401
R145
1.5K
R139
4.7K
R137
7
1K
D106
1N914
D107
1N914
1K
R135
D13
R141
4.7K
-15VAMP
K11
22½ 1W1%
22½ 1W1%
R129
R150
Q520
5401
RELAY+
C11
.1µF
C13
.1µF
FAN G
.01
1K
R45
N/U
Q9
5550
R133
+
C120
2.2K
22
R63
150k
2.2K
R100
R104
33K
150K
R102
R516
.22½
5W
R517
.22½
5W
Q517
Q1
500 ms delay
S5.B
K33
RELAY+
Q107
MJD340
Q106
+15REAR
R16
Q11
C4
.047µF C180
Q111
220K
+
220µF 50V
QC15
QC5
QC7
GND LIFT
HF POS
HF NEG
TIP 102
R48
.22½
5W
R59
.22½
5W
TIP 107
C73
250VAC
R17
CAB GND
-24 RLY
AC Line in from switch
250VAC
.047
Earth to chassis
C21
.047
470K smt 1/4w
AC Neutral to transformer
H4.B
H4.A
F1
AC Line out to switch
L
E
E2
N
QC8
H4.D
H4.C
AC Line to transformer
PL1
CABINET PCB / EXTENSION JACK
GND
2-1+1-
2+
FULL
J3
J2
2+
HI FREQ
EXT
J4
SPKR GND
1-
1+
2+
2-
J1
SPKR GND
HI FREQ
B2
B3
1-
1+
2+
1.5µH
2-
J5
(HEAD)
MAIN
QC9
22½ 1W1%
R78
R419
22½ 1W1%
L33
1.5µH
V+LOW
D108
SMB 1A
R177
10K
R176
Q117
5401
47K
R178
100K
C181
D109
SMT
V-LOW
2-1+1-
L100
.01
22½ 1W1%
QC1
QC3
22½ 1W1%
C10
.1µF
C121
.1µF
R179
QC14
QC4
QC6
R01
R107
FAN G
100K
CURLIM
22½ 1W1%
R02
OUT 3
22½ 1W1%
R128
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