ABC D
ABC D
E
E
F
F
D17
2
C44
1
50V
R38
1K
800mVRMS
-50V
2
R59
R52
680
R47
3.3K
1/2W
1M
-16VA
2
5
6
R64
47
200V
33 pF
C23
R51
33K
U3:B
7
NE5532
C34
330 pF
100V
BIAS AJUST
SEE NOTE.
TP10
R63
330
CW
2
2.0VRMS
R50
4.7K
AP1
500
BIAS
R42
1K
C46
10
35V
-16VA
Q3
MPS-A06
50V
1
C29
+16VA
2
R55
1K
R43
220
Q6
MJE-350
+50V
R67
270
Q7
MJE-340
R41
220
R58
270
D20
1N914
75V PIV
1N4740
10V
R56
D9
1N914
75V PIV
D10
1N4740
10V
1
1
R74
D8
R57
47
R39
3.3
1W
C26
.1
100V
2
47
.33
10W
S
Q4
G
IRFP-9140R
D
R71
47
D
Q5
G
IRFP-140R
S
R70
47
R72
.33
10W
R75
.33
10W
S
Q11
G
IRFP-9140R
D
TP11
26.3VRMS
L1
.5 uH
R65
1
1W
D
Q8
G
IRFP-140R
S
R73
.33
10W
J3
1
2
2
2
2
+50V
R45
680
D13
1
1
C31
35V
R46
10K
10
R7
270K
1/4W
5per
TO J31
SEE SHT 3
PRE AMP
PAGE_NEXT_A
-16VA
2
2
R48
3.3K
1/2W
J29
Q9
J112
2
D
G
HPGS_A
1
2
3
4
5
6
7
8
1N914
75V PIV
S
+16VA
-16VA
2
D14
1N914
75V PIV
200V
33 pF
C35
2
U3:A
3
2
PAGE_NEXT_A
HPGS_A
S
NE5532
R60
47K
1
G
D
Q10
J112
OC1
VTL-5C7
D11
1N914
75V PIV
1N914
75V PIV
TP12
3
3
CAUTION:
CAUTION:
THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL.
THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL.
TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED
TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND
SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND
THAT EXPLAINED IN THE OPERATING INSTRUCTIONS.
THAT EXPLAINED IN THE OPERATING INSTRUCTIONS.
4
4
NOTES:
NOTES:
1) CAUTION: SHOCK HAZARD!!
1) CAUTION: SHOCK HAZARD!!
THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER
THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER
AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE
AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE
TOUCHING INTERNAL PARTS.
TOUCHING INTERNAL PARTS.
2) UNLESS NOTED, RESISTOR VALUES IN OHMS, 1/4W-5% TOL.
2) UNLESS NOTED, RESISTOR VALUES IN OHMS, 1/4W-5% TOL.
CAPACITOR VALUES IN MICROFARADS, 50V-10% TOL.
CAPACITOR VALUES IN MICROFARADS, 50V-10% TOL.
3) VOLTAGES ARE MEASURED WITH 1 MEGOHM OSCILLOSCOPE
3) VOLTAGES ARE MEASURED WITH 1 MEGOHM OSCILLOSCOPE
AND 10 MEGOHM DIGITAL VOLTMETER.
AND 10 MEGOHM DIGITAL VOLTMETER.
ABC DEF
ABC DEF
-50V
NOTE: SET BIAS VOLTAGE FROM COLD START
ACROSS R72 - R75 , 15 -20 mV DC
AVERAGE , NO SIGNAL, NO LOAD.
TEST POINT CONDITIONS NOTE :
1 KHz INPUT SINEWAVE 170mV @ 0 dB
INPUT JACK. 120VAC LINE, VOLUME & LEVEL @ "10"
TONES @ "5" , DC VOLTAGES WITH N0 SIGNAL APPLIED.
0
D
C
C
B
B
A
A
REV Date
REV Date
Drawn:
Drawn:
Checked:
Checked:
Released:
Released:
Plot Date:
Plot Date:
Plot Time:
Plot Time:
Tolerance:
Tolerance:
03/23/06
2-15-06
2-2-06
2-2-06
01/04/06
01/04/06
12-29-05
12-29-05
Signatures:
Signatures:
Thu Mar 23, 2006
Thu Mar 23, 2006
CONTROL ISSUE
ADDED R7
CHANGED J14 TO J19 ON WIRING DIAGRAM
CHANGED J14 TO J19 ON WIRING DIAGRAM
CHG C55 P/N, DEL
CHG C55 P/N, DEL
DNP NOTES
DNP NOTES
INITIAL ISSUE
INITIAL ISSUE
DESCRIPTION
DESCRIPTION
THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO
THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO
RLB
RLB
Drawing Size:
Drawing Size:
Drawing Type: Schematic
Drawing Type: Schematic
Class Code:
Class Code:
Sheet 1 of
Sheet 1 of
ST. LOUIS MUSIC, INC
ST. LOUIS MUSIC, INC
Date:
Date:
NONE
NONE
5-9-05
5-9-05
C
C
3
3
WFB
R01852
R01846
R01846
R01838
R01838
Ecr(s)/Ecn(s) Chgd By Date
Ecr(s)/Ecn(s) Chgd By Date
1901 Congressional, St. Louis, MO 63146
First Used On:
First Used On:
Drawing Title:
Drawing Title:
Drawing Number:
Drawing Number:
1901 Congressional, St. Louis, MO 63146
RLB
RLB
RLB
WFB
WFB
Appvd by
Appvd by
BASS AMP
BASS AMP
07S697
07S697
3
3
4
4
BA-115HPT
©2007 LOUD Technologies Inc. All rights re served Bass Amplifi er PCB Schematics PAGE 1
ABC D
ABC D
E
E
F
F
D16
1N4007
1KV PIV
J10
C28
10
450V
C36
10
450V
2
PWR SWITCH
J13
J12
J11
D21
1N4007
1KV PIV
J8
J18
D23
1N4007
1KV PIV
C50
.0033
250V
CHASSIS GROUND
B+
R61
1M
2
C25
.0033
250V
2
C45
100
200V
2
POWER
J14
TRANSFORMER
J16
J17
J9
BLK
WHT
RED
GRN
RED
J24
J22
J20
TP14
ACV
DCV
C51
5600
80V
C54
5600
80V
-50V
BR1
HV
KBU1004G
DCV
ACV
2
C32
.1
100V
2
C38
.1
100V
+50V
R66
330
10W
R68
330
10W
C30
.047
100V
+16VA
-16VA
1
1
2
2
4 A SB
F1
R62
1
1/2W
5per FP
1N4007
1KV PIV
D15
FC2
C37
10
450V
2
HV
1
1
100-120V 50/60Hz 4a SB
220-240V 50/60Hz 2.5a SB
FC1
J6
2
2
LINECORD
NET00086
NET00087
3
3
CAUTION:
CAUTION:
THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL.
THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL.
TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED
TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND
SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND
THAT EXPLAINED IN THE OPERATING INSTRUCTIONS.
THAT EXPLAINED IN THE OPERATING INSTRUCTIONS.
4
4
NOTES:
NOTES:
1) CAUTION: SHOCK HAZARD!!
1) CAUTION: SHOCK HAZARD!!
THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER
THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER
AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE
AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE
TOUCHING INTERNAL PARTS.
TOUCHING INTERNAL PARTS.
2) UNLESS NOTED, RESISTOR VALUES IN OHMS, 1/4W-5% TOL.
2) UNLESS NOTED, RESISTOR VALUES IN OHMS, 1/4W-5% TOL.
CAPACITOR VALUES IN MICROFARADS, 50V-10% TOL.
CAPACITOR VALUES IN MICROFARADS, 50V-10% TOL.
3) VOLTAGES ARE MEASURED WITH 1 MEGOHM OSCILLOSCOPE
3) VOLTAGES ARE MEASURED WITH 1 MEGOHM OSCILLOSCOPE
AND 10 MEGOHM DIGITAL VOLTMETER.
AND 10 MEGOHM DIGITAL VOLTMETER.
J15
J19
100VAC
50/60HZ
FUSE=
SLO BLO
AC
LINE
AC
NEUTRAL
4A
J13 BLK
J12 BLU/WHT
J16 BLUE
J7 WHT
J11 BROWN
J17 GRAY
J9 VIOLET
230VAC
50/60HZ
FUSE=
SLO BLO
AC
NEUTRAL
ORG
D-GND
ORG
EXPORT WIRING
J13 BLK
AC
LINE
2.5A
J17 BLU/WHT
J12 BLUE
J19 WHT
J15 BROWN
J11 GRAY
J7 VIOLET
J21
J25
TP15
J33
D24
1N4007
1KV PIV
2
D25
D18
D19
2
AC
LINE
C52
2200
16V
D-GND
R44
6.2
J17 BLK
C70
D-GND
2200
16V
2
D-GND
J13 BLU/WHT
J12 BLUE
J19 WHT
240VAC
50/60HZ
FUSE=
SLO BLO
2.5A
J15 BROWN
J11 GRAY
AC
NEUTRAL
J7 VIOLET
B+
2
Released:
Released:
Plot Date:
Plot Date:
Plot Time:
Plot Time:
1
2
3
TO J32
SEE SHT 3
PRE AMP
0
03/23/06
2-15-06
D
2-2-06
2-2-06
C
C
01/04/06
01/04/06
B
B
12-29-05
12-29-05
A
A
REV Date
REV Date
Drawn:
Drawn:
Checked:
Checked:
Thu Mar 23, 2006
Thu Mar 23, 2006
Tolerance:
Tolerance:
CONTROL ISSUE
ADDED R7
CHANGED J14 TO J19 ON WIRING DIAGRAM
CHANGED J14 TO J19 ON WIRING DIAGRAM
CHG C55 P/N, DEL
CHG C55 P/N, DEL
DNP NOTES
DNP NOTES
INITIAL ISSUE
INITIAL ISSUE
DESCRIPTION
DESCRIPTION
THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO
THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO
Signatures:
Signatures:
Drawing Size:
Drawing Size:
Drawing Type: Schematic
Drawing Type: Schematic
Class Code:
Class Code:
Sheet 2 of
Sheet 2 of
RLB
RLB
ST. LOUIS MUSIC, INC
ST. LOUIS MUSIC, INC
Date:
Date:
5-9-05
5-9-05
C
C
NONE
NONE
3
3
WFB
R01852
R01846
R01846
R01838
R01838
Ecr(s)/Ecn(s) Chgd By Date
Ecr(s)/Ecn(s) Chgd By Date
1901 Congressional, St. Louis, MO 63146
First Used On:
First Used On:
Drawing Title:
Drawing Title:
Drawing Number:
Drawing Number:
1901 Congressional, St. Louis, MO 63146
RLB
RLB
RLB
WFB
WFB
Appvd by
Appvd by
BASS AMP
BASS AMP
07S697
07S697
3
3
4
4
ABC DEF
ABC DEF
BA-115HPT
©2007 LOUD Technologies Inc. All rights re served Bass Amplifi er PCB Schematics PAGE 2
ABC D
ABC D
+16V
OUT
IN
200V
C1
-16V
R2
680K
1
2
3
H
1
2
OUT_A
3
IN_A
4
4
1
1
D22
1N914
75V PIV
J1
0 dB
J2
15 dB
2
2
3
3
TO J29
SEE SHT 1
PWR AMP
CAUTION:
CAUTION:
THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL.
THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL.
TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED
TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND
SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND
THAT EXPLAINED IN THE OPERATING INSTRUCTIONS.
THAT EXPLAINED IN THE OPERATING INSTRUCTIONS.
4
4
NOTES:
NOTES:
1) CAUTION: SHOCK HAZARD!!
1) CAUTION: SHOCK HAZARD!!
THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER
THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER
AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE
AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE
TOUCHING INTERNAL PARTS.
TOUCHING INTERNAL PARTS.
2) UNLESS NOTED, RESISTOR VALUES IN OHMS, 1/4W-5% TOL.
2) UNLESS NOTED, RESISTOR VALUES IN OHMS, 1/4W-5% TOL.
CAPACITOR VALUES IN MICROFARADS, 50V-10% TOL.
CAPACITOR VALUES IN MICROFARADS, 50V-10% TOL.
3) VOLTAGES ARE MEASURED WITH 1 MEGOHM OSCILLOSCOPE
3) VOLTAGES ARE MEASURED WITH 1 MEGOHM OSCILLOSCOPE
AND 10 MEGOHM DIGITAL VOLTMETER.
AND 10 MEGOHM DIGITAL VOLTMETER.
J31
TIP_SW
SLVE_SW
SLEEVE
TIP_SW
SLVE_SW
SLEEVE
1
2
3
4
5
6
7
8
TIP
TIP
+16V
-16V
PAGE_NEXT
HPGS
R6
22K
R4
100K
C3
100 pF
.047
100V
C-GNDB
J32
TO J33
SEE SHT 2
POWER SUPPLY
J26
TO J35
D27
1N914
75V PIV
TO J26
5
J35
IN_A
R3
6.8K
R40
47K
D-GND
1
2
3
4
4
TP1
C2
1
50V
+16V
OUT
IN
C53
100
250V
4
V2:A
R33
1M
Ref Des
U1
U2
U3
U4
U7
700mV RMS
3
U1:A
2
TLO-72
R12
22K
R10
220
R36
47.5K
1/2W
1per
9-PIN
R37
1K
1/2W
1per
4
Device(Type)
3707201_
3707201_
3753201_
3707201_
3753201_
1
H
C55
22
35V
C4
100
35V
V2:B
Package
8DIP_3
8DIP_3
8DIP_3
8DIP_3
8DIP_3
C9
1
50V
J5
1
2
3
TUNER OUT
9-PIN
R69
33.2K
1/2W
1per
R78
6.81K
1/2W
1per
Power Table
-16VA4+16V1
E
E
C59
.001
R13
100K
5
6
100 pF
200V
U1:B
C65
R98
10K
R96
2.2K
TLO-72
100V
R79
C67
R89
7
4.7K
1
50V
TP2
3.8VRMS
CW
GAIN
P1
50K L
C39
2.2
50V
C42
.0047
100V
R77
22K
R53
R76
47K
R91
22K
R90
2.2K
R49
4.7K
47K
47K
.015
50V
.033
50V
C64
C63
C66
.047
100V
C27
.22
50V
R97
22K
C22
.033
50V
R80
100K
C49
.22
50V
R101
22K
3
2
C56
.047
100V
R81
47K
C33
.22
50V
R27
47K
U2:A
TLO-72
R92
47K
1
TP8
1.1VRMS
D-GND
5
C24
OUT_A
.1
R35
22.1K
1/2W
1per
4
8
8
400V
-16V
4
4
+16V
8
8
R31
470K
4
-16V1
+16VA
4
4
8
0
03/23/06
R1
2.2K
1/2W
D12
1N5353B
16V
D26
1N5353B
16V
CONTROL ISSUE
RED
POWER
C48
R32
CW
1K
2.2
50V
D1
+16V
C60
100
C68
35V
35V
100
-16V
C21
.047
100V
HIGH
CW
MID
50K L
CW
LOW
R5
100
C5
22
16V
C8
22
16V
R9
100
R102
22K
P8
50K L
P7
50K L
P6
R100
C43
.047
100V
22K
R30
22K
50V
C41
.22
R83
22K
R94
47K
C40
.22
50V
C47
.0022
100V
C57
.022
50V
+16V1
-16V1
WFB
CW
5
STYLE
S1
4
3
CCW
R82
22K
CMN
R29
100K
5
7
U2:B
6
TLO-72
TP3
450mV RMS
R95
22K
R87
22K
J30
CD INPUT
250mV RMS
TP5
PAGE_NEXT
1.15VRMS
JW51
1.15VRMS
1
R104
4.7K
R85
22K
2
U7:A
3
NE5532
C7
22
50V
1
R84
22K
R103
6
U7:B
5
R88
270
22K
7
NE5532
R01852
R01846
R01846
R01838
R01838
DESCRIPTION
DESCRIPTION
THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO
THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO
RLB
RLB
Class Code:
Class Code:
ST. LOUIS MUSIC, INC
ST. LOUIS MUSIC, INC
Date:
Date:
5-9-05
5-9-05
NONE
NONE
3
3
Ecr(s)/Ecn(s) Chgd By Date
Ecr(s)/Ecn(s) Chgd By Date
First Used On:
First Used On:
Drawing Title:
Drawing Title:
C
C
Drawing Number:
Drawing Number:
JW52
C62
.047
100V
C58
50V
R105
22
270
1901 Congressional, St. Louis, MO 63146
1901 Congressional, St. Louis, MO 63146
47K
22K
R86
R93
LEVEL
CW
P9
TP4
U4:B
5
7
6
TLO-72
C61
56 pF
200V
R99
1K
C69
35V
10
450mV RMS
R11
22K
R14
47K
D
C
C
B
B
A
A
REV Date
REV Date
Drawn:
Drawn:
Checked:
Checked:
Released:
Released:
Plot Date:
Plot Date:
Plot Time:
Plot Time:
Tolerance:
Tolerance:
R15
10K
SW1
I
C C
O O
MUTE
2-15-06
2-2-06
2-2-06
01/04/06
01/04/06
12-29-05
12-29-05
Signatures:
Signatures:
Thu Mar 23, 2006
Thu Mar 23, 2006
20K RA
TLO-72
2
3
U4:A
I
ADDED R7
CHANGED J14 TO J19 ON WIRING DIAGRAM
CHANGED J14 TO J19 ON WIRING DIAGRAM
CHG C55 P/N, DEL
CHG C55 P/N, DEL
DNP NOTES
DNP NOTES
INITIAL ISSUE
INITIAL ISSUE
Drawing Size:
Drawing Size:
Drawing Type: Schematic
Drawing Type: Schematic
Sheet 3 of
Sheet 3 of
RLB
RLB
RLB
WFB
WFB
1
HPGS
J28
TP6
TP7
2
3
F
F
RING
RING_SW
TIP_SW
TIP
SLVE_SW
SLEEVE
Appvd by
Appvd by
BASS AMP
BASS AMP
07S697
07S697
1
1
2
2
J4
3
3
4
4
ABC DEF
ABC DEF
BA-115HPT
©2007 LOUD Technologies Inc. All rights re served Bass Amplifi er PCB Schematics PAGE 3
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