Laney HCM160B Schematic
HCM160B
Service InformationService Information
Laney
Classic British Amplification
Newlyn Road, Cradley Heath, West Midlands. B64 6B£
www.laney.co.uk
1
G G
Passi ve
MJACK
SK1
G
A A
SK2
MJACKG
Active
P1
WIREPA D
Electronic GND
B B
DIRECT OUT
SK3
XLR3 M
21
3
G
G
R3
1K
C6
100P 100V
R67
470R
R66
820R
+15V
D2
1N41 48
C3
10N 100V
D1
R5
1N41 48
R64
10K
-15V
TL07 2
+15V
-15V
U7A
1M
G
R2
10K
G
R65
10K
G
G
R1
10K
G
TL07 2
C4
2U2 6 3V
R63
470R
R62
820R
U1B
C7
270P 250V
R4
22K
LN18
0R0
2
10U 5 0V
C5
3
C10
470P 1KV
R9
VR1
22KB6 S
C8
100P 100V
TL07 2
G
100P 100V
Gain
-15V
+15V
R6
4K7
C9
2U2 6 3V
U1A
+15V
LN1
0R0
C11
CA3094
R13
22K
G
G
R7
10K
-15V
R21
22K
0R0
LN2
-15V2
U3
R15
G G
100R
-15V
TL07 2
GK
22K
-15V
+15V
R23
100K
BC307
R46
1K
LN3
R10
U2A
0R0
10K
R25
4K7
R11
R8
22K
22K
R14
100R
TS3
GJ
C24
2U2 6 3V
GK
R18
22K
R22
33KSM
C15
47N 1 00V
C16
220N 63V
VR2
22KB 6S
G
Enhance
R39
22K
TL07 2
R48
470K
GK
U5B
4
C12
2N2 1 00V
R20
47KS M
R27
47KS M
R28
100R
LN6
0R0
5
VR5
Treble
22KB 6S CD
R40
2K2S M
C21
47N 1 00V
C14
U2B
TL07 2
4U7 6 3V
R12
56K
R16
10K
C13
10U 5 0V
G
SW1B
LN5
0R0
2P2WP S
1N41 48
D5
1N41 48
R45
10K
D6
R34
10K
R33
470K
R35
2K2S M
G
Bass
C18
G
R32
10K
VR3
22KB6 SCD
220N 63V
-15V
R24
100K
TS2
BC307
R30
1K
2U2 6 3V
G
Comp Level
C19
470P 1KV
R29
4K7
G
R37
R26
10K
LED3M MG
R42
2K2S M
2K2S M
C22
47N 100V
C17
-15V
U4A
TL07 2
LN4
0R0
+15V
-15V2
TS1
BC237
R17
R19
3K3
3K3
D3
D4
LED3M MG
Comp On
G
SW1A
2P2 WPS
G
6
C20
0R0
R31
LN10
10K
2U2 6 3V
Compressor Switch
HD1
10
8
6
4
2
HD10 W.5
7
C29
2U2 6 3V
C33
1U 63 V
C32
9
7
5
3
GH
1
G
0. 47U 63V
C28
220N 63V
C30
68N 1 00V
C31
33N 1 00V
C27
10N 1 00V
1
2
3
4
5
6
7
8
10
9
C40
100N 63V
C39
68N 1 00V
C38
22N 1 00V
C37
10N 1 00V
4N7 1 00V
C35
1N5 1 00V
C34
680P 50V
U6
C36
LA36 07
G2
VR5
VR6
VR9
VR10
VR11
VR12
VR13
C41
10U 5 0V
G2
8
R59
8K2
C42
470P 1KV
+15V
LN15
0R0
C43
G2
10U 5 0V
C C
D15
15V Z D1.3W
D14
15V Z D1.3W
1N41 48 D7
G G
G G
3
R69
4K7
R70
4K7
Tuner Out
LN17
+15V
0R0
-15V
0R0
D D
E E
LN16
LN19
0R0
RT
1
G
To PCB 937 8
Output PCB
HD2
9
G
10
7
8
5
6
3
4
1
2
+60V-60V
Signal Out
Limiter Signal
HORN ON/ OFF
NOT FITTED TO HCM160B MODEL
TO HORN -V
2
2P2WP S
SW2B
Limiter Defeat
VR4
100K H
R61
+60V
680R 5W
R60
-60V
680R 5W
15V Z D1. 3W
100K
100K
D8
1N41 48
820R
D13
R52
R44
R38
C45
470U 16V
C44
470U 16V
+60V-60V
C25
22N 1 00V
100K
LN7
0R0
G
D11
15V Z D1. 3W
R53
100K
R43
R36
820R
R41
33K
TL07 2
G
C23
47P 5 0V
-15V
+15V
G
C1
100N 63V
U5A
C2
100N 63V
-15V
R49
4K7
+15V
4
1N41 48
1N41 48
Power
D9
D10
R47
10K
R55
10K
-15V
R68
4K7
D16
LED3M MR
G
470K
PCB 9382: SLIDER ASSY
-15V
C26
2U2 6 3V
R54
GK
LN13
0R0
G G2
Revi sion Hist ory
R56
100K
TS4
BC307
R51
1K
LED3M MR
5
-15V
R57
10K
D12
G
LN11
0R0
GH GG
TS5
BC237
R58
3K3
Limit Active
0R0
LN12
G
LN8
LN9
0R0
0R0
G GJ GK
LN14
0R0
C46
10U 5 0V
VR6
LN20
4K7B 6S
0R0
G
MASTER VO LUME
Flame proof resister
FP
Must only be replaced with same type and rating
Indi cate s s afet y cr itic al c ompon ent
Must only be replaced with approved type
Titl e
HCM160B Bass Preamp
BLT
Indus tries
6
Numbe r Revis ionSize
A2
Date: 15/05/2003 Sheet of
Fil e: C:\ Documen ts a nd Set tings \. .\9395 _2.S ch Draw n By:
9395 2
7
119395_2.Sch
Rich Thompson
8
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