©2007 LOUD Technologies Inc. All rights re served
Bass Amplifi er PCB Schematics
PAGE 3
B-200R
12/15/05
05/30/06
C
WFB
WFB
0
1
4
CAUTION:
A
B
C
D
Tolerance:
Plot Time:
Plot Date:
E
N02128
F
4
2
NOTES:
1
Checked:
Drawn:
Released:
REV
Date
Sheet
3
of
NONE
3
Date:
5-9-05
Appvd by
3
1
A
B
C
D
E
F
2
Wed May 31, 2006
Drawing Title:
1901 Congressional, St. Louis, MO 63146
ST. LOUIS MUSIC, INC
3
Signatures:
Drawing Number:
07S673
BASS AMP
First Used On:
THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO
Ecr(s)/Ecn(s)
Chgd By
Date
1) CAUTION: SHOCK HAZARD!!
Drawing Type: Schematic
Drawing Size:
CONTROL ISSUE
ADDED -02 ASSEMBLY
TOUCHING INTERNAL PARTS.
Class Code:
RLB
DESCRIPTION
3) VOLTAGES ARE MEASURED WITH 1 MEGOHM OSCILLOSCOPE
2) UNLESS NOTED, RESISTOR VALUES IN OHMS, 1/4W-5% TOL.
AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE
THAT EXPLAINED IN THE OPERATING INSTRUCTIONS.
TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED
CAPACITOR VALUES IN MICROFARADS, 50V-10% TOL.
AND 10 MEGOHM DIGITAL VOLTMETER.
THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER
SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND
THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL.
12/15/05
05/30/06
C
WFB
WFB
0
1
4
CAUTION:
A
B
C
D
Tolerance:
Plot Time:
Plot Date:
E
N02128
F
4
2
NOTES:
1
Checked:
Drawn:
Released:
REV
Date
Sheet
3
of
NONE
3
Date:
5-9-05
Appvd by
3
1
A
B
C
D
E
F
2
Wed May 31, 2006
Drawing Title:
1901 Congressional, St. Louis, MO 63146
ST. LOUIS MUSIC, INC
3
Signatures:
Drawing Number:
07S673
BASS AMP
First Used On:
THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO
Ecr(s)/Ecn(s)
Chgd By
Date
1) CAUTION: SHOCK HAZARD!!
Drawing Type: Schematic
Drawing Size:
CONTROL ISSUE
ADDED -02 ASSEMBLY
TOUCHING INTERNAL PARTS.
Class Code:
RLB
DESCRIPTION
3) VOLTAGES ARE MEASURED WITH 1 MEGOHM OSCILLOSCOPE
2) UNLESS NOTED, RESISTOR VALUES IN OHMS, 1/4W-5% TOL.
AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE
THAT EXPLAINED IN THE OPERATING INSTRUCTIONS.
TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED
CAPACITOR VALUES IN MICROFARADS, 50V-10% TOL.
AND 10 MEGOHM DIGITAL VOLTMETER.
THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER
SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND
THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL.
B+
2
B+
+180 VDC
RED
RED
2.5A
HV
+50V
+16VA
*
LINECORD
HV
FC2
2
10
C37
100V
4A
J19
J15
J12
J11
PWR SWITCH
2
D21
1N4007
1KV PIV
2
.0033
C25
250V
D23
1N4007
1KV PIV
J17
J16
2
AC
NEUTRAL
2.5A
ORG
ORG
GRN
D25
-50V
2
AC
NEUTRAL
2200
16V
C52
+12.8 VDC
2
D-GND
.1
C38
100V
.1
C32
100V
-16VA
+50V
TO
POWER
LIGHT
FC1
FUSE=
SLO BLO
J13
C28
10
450V
10
450V
C36
.0033
C50
250V
100
250V
C45
AC
LINE
D24
1KV PIV
1N4007
AC
LINE
2
D-GND
2
.047
C30
100V
2
FOR 07-673-01 / -02 ASSEMBLIES
FUSE=
SLO BLO
J11 BROWN
J7 WHT
J16 BLUE
J12 BLU/WHT
J13 BLK
CHASSIS GROUND
NET00087
NET00086
WHT
BLK
J7 VIOLET
J11 GRAY
J15 BROWN
J14 WHT
J12 BLUE
J17 BLU/WHT
J13 BLK
J20
J24
+29 VDC
1N4007
D15
1KV PIV
J9 VIOLET
J17 GRAY
100VAC
50/60HZ
230VAC
50/60HZ
AC
LINE
J9
J8
J18
J10
D16
1N4007
1KV PIV
J7 VIOLET
J11 GRAY
J15 BROWN
J14 WHT
240VAC
50/60HZ
FUSE=
SLO BLO
J12 BLUE
J13 BLU/WHT
J17 BLK
D18
2
D-GND
TO J32
SEE SHT 3
PRE AMP
R44
6.2
J21
5600
80V
C54
R66
330
10W
5600
80V
C51
BR1
KBU1004G
R68
330
10W
J22
J27
R54
2W
F1
4 A SB
R62
1
1/2W
5% FP
J6
AC
NEUTRAL
J14
1M
R61
D19
1
2
3
J33
J25
J7
EXPORT WIRING
POWER
TRANSFORMER
100-120V 50/60Hz 4a SB
220-240V 50/60Hz 2.5a SB
*SEE PARTSLIST
FOR VALUE
