Page 1
DCBA
4
3 2
NOTES:
THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL. CAUTION:
TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED
THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER
AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE
TOUCHING INTERNAL PARTS.
1) CAUTION: SHOCK HAZARD!!
2) UNLESS NOTED, RESISTOR VALUES IN OHMS, 1/4W-5% TOL. CAPACITOR VALUES IN MICROFARADS, 50V-10% TOL.
3) VOLTAGES ARE MEASURED WITH 1 MEGOHM OSCILLOSCOPE AND 10 MEGOHM DIGITAL VOLTMETER.
SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND
THAT EXPLAINED IN THE OPERATING INSTRUCTIONS.
DCBA
1
FE 1
Signatures:
Checked:Drawn:
SheetClass Code:
THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO
Drawing Size:
Drawing Type: Schematic
Tolerance:
Released: REV Date DESCRIPTION
E
A
08/04/05
2
OK
CONTROL ISSUE
0
02/08/06
INITIAL ISSUE
C
ofDrawing Title:
Drawing Number:
NONE
2 Ecr(s)/Ecn(s)
First Used On: ST. LOUIS MUSIC, INC Date: 08/04/05
11880 Borman Drive, St. Louis, MO 63146
Chgd By
Appvd by F
07S3 38
2
SCHEMATIC -BASS AMP
Date
4 3
DCBA
4
3 2
NOTES:
THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL. CAUTION:
TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED
THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER
AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE
TOUCHING INTERNAL PARTS.
1) CAUTION: SHOCK HAZARD!!
2) UNLESS NOTED, RESISTOR VALUES IN OHMS, 1/4W-5% TOL. CAPACITOR VALUES IN MICROFARADS, 50V-10% TOL.
3) VOLTAGES ARE MEASURED WITH 1 MEGOHM OSCILLOSCOPE AND 10 MEGOHM DIGITAL VOLTMETER.
SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND
THAT EXPLAINED IN THE OPERATING INSTRUCTIONS.
DCBA
1
FE 1
Signatures:
Checked:Drawn:
SheetClass Code:
THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO
Drawing Size:
Drawing Type: Schematic
Tolerance:
Released: REV Date DESCRIPTION
E
A
08/04/05
2
OK
CONTROL ISSUE
0
02/08/06
INITIAL ISSUE
C
ofDrawing Title:
Drawing Number:
NONE
2 Ecr(s)/Ecn(s)
First Used On: ST. LOUIS MUSIC, INC Date: 08/04/05
11880 Borman Drive, St. Louis, MO 63146
Chgd By
Appvd by F
2
SCHEMATIC -BASS AMP
Date
4 3
PAGE_NEXT
C16
.0022 100V
R13
100K R12
100K
22K R21 47K R24 2 3
1IC2:A
TLO-72
6 5
7 IC2:B
TLO-72
R20
100K
R10 22K R81K +40V
R15
22K C4
22
C5
22
R2
270
R3
270
1N914 D4
47 R26 6 5
7IC3:B
NE5532
R4
1K
220 R9
SPKR_GND
C20
1
MPS-A06 Q3
35V
10
C31
-40V
220 R31
220
R35
220 R41
Q4
MJE-340
220 R34
-40V
D9
1N4744 15V D8
15V
1N4744
3.3
1W
R28
D7
15V
1N4744
C15
.022
R18 1K C8
56 pF 200V
22K R17 C11
10
35V 3.3K
1/2W R7
6 5
7
IC1:B
TLO-72
22K R16 33 pF
200V C12 1N914
D3
D5
1N914
1
C44
1
3 2 J5
BALANCED
LINE
OUT
330 pF C13
100V
R59 1M
3.3K
1/2W R6
R19
33K
820 1W R5
Q1
MJE-350 +40V
.1 R61
3W D6
1N4744 15V
.1
C17
100V
ASSY P/N 07-338-01
CWP5
50K L LOW
C9
10
35V
2 3
1
TLO-72 IC1:A
47K
R23 S
D
G
Q6
J112
1N914 D2
.047 C2
100V
1K
R22
33 pF C10
200V -16V
-40V
-16V
G
D S
IRFP-140R Q5
1K
R42
R49
47
1K
R43 SEE NOTE.
CW
AP1
BIAS ADJ
500
G
D S
IRFP-9140RQ2
1K R50
47
R33
+16V
NOTE: BIAS SETTING AS FOLLOWS;
SET AP1 BIAS ADJUST CONTROL
FOR 5mV ACROSS R61 WITH
NO SIGNAL APPLIED, NO LOAD.
RL CD INPUT J3
CWP3
50K L HIGH CWP4
50K L MID
R14
100K
OC1
VTL-5C7
2 3
1
NE5532 IC3:A
R25
10K
SLVE_SW SLEEVE TIP_SW RING RING_SW TIP
J4
HEADPHONE
4.7K R44
2 1
J21
CW
20K RA
MASTER P2
