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 POWERAND 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 OSCILLOSCOPEAND 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:

Sheet

Class Code:

THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO

Drawing Size:

Drawing Type: SchematicTolerance:

Released:

REV Date DESCRIPTION

E

0 7/01/99

1

-

OK

CONTROL ISSUE

SWAPPED J21 PINS 1 & 2, COONECTED J21TO HEADPH GS TO DETACH FROM MAIN GND1

07/28/99

7/01/99

CONTROL ISSUE ECR00047

R990512-01

N00062

C

of

Drawing Title:

Drawing Number:NONE

2

Ecr(s)/Ecn(s)

First Used On:

ST. LOUIS MUSIC, INC

Date:1/14/99

-11880 Borman Drive, St. Louis, MO 63146

Chgd By Appvd by

-

F

BA115a

07S103-XX

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 POWERAND 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 OSCILLOSCOPEAND 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:

Sheet

Class Code:

THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO

Drawing Size:

Drawing Type: SchematicTolerance:

Released:

REV Date DESCRIPTION

E

0 7/01/99

1

-

OK

CONTROL ISSUE

SWAPPED J21 PINS 1 & 2, COONECTED J21TO HEADPH GS TO DETACH FROM MAIN GND1

07/28/99

7/01/99

CONTROL ISSUE ECR00047

R990512-01

N00062

C

of

Drawing Title:

Drawing Number:NONE

2

Ecr(s)/Ecn(s)

First Used On:

ST. LOUIS MUSIC, INC

Date:1/14/99

-11880 Borman Drive, St. Louis, MO 63146

Chgd By Appvd by

-

F

BA115a

07S103-XX

2

SCHEMATIC -BASS AMP

Date

4

3

FC1

J6

J12 BLU/WHT

J13 BLK

J16 BLUE

J11 BROWN

J7 WHT

AC LINE

ACNEUTRAL

C1.0033

J8

J13

J11

J12J14

J15

J10

J18

F1FC2

J17

2.2K

R51

4.7KR40

.033 uF

C23

50V

22K

R46

C3.0033

J16

J22

J19

AC LINE

J9

J7

J20

J13 BLK

J14 WHT

J12 BLUE

J17 BLU/WHT

J15 BROWN

ACNEUTRAL

J7 VIOLET

J11 GRAY

J9 VIOLET

J17 GRAY

T/SJ2

J1T/S

100K

R65

22K

R62

C4256 pF200V

C37

.047 uF100V

C34

50V2.2 uF2.2K

R64

-16V

220KR60

D101N914

D131N914

10K

R67

TLO-72

U5:B

C41

100 PF

200V

+16V

TLO-72

U5:A.001uF

C32

100V

47K

R58

4.7K

R63 C36

50V1 uF

22K

R57

C33.047 uF

100V

C30

.0047 uF100V

22K

R52

47K

R56

CW

P1

50K RA

22K

R48

50V.22 uF

C26

C35.047 uF100V

47K

R45 C25

.22 uF50V 22K

R36

47KR53

47KR47

C27

.22 uF50V

22K

R54

47K

R55

RefDesPower Table

84+16V-16V

IC1

100KR29

U4:A

TLO-72

84848484

1K

R3250V2.2 uF

C45

IC2U3U4U5

5

3

CCW

CMN

CW

4

S1

SWITCH

PAGE_NEXT

J11 GRAY

J7 VIOLETACNEUTRAL

100V

C19.1 uF

270 5W

R66100V

C38.1 uF

J14 WHT

J15 BROWN

J12 BLUE

-40V

50V4700 uF

C6

J17 BLK

J13 BLU/WHT

AC LINE

50V4700 uF

C14

C22

.033 uF50V

BR1

3A DIODE BRIDGE

47K

R27

22K

R30TLO-72

U4:B

C28

.22 uF50V

100KR39

C29

.015 uF50V

.22 uF

C24

50V

+40V

270 5W

R68

22KR38

22KR37

R1

2.2K 1/2W

D1

RED

35V100 uFC39

35V100 uFC40

D11

16V1N5353B

D12

16V1N5353B

100V

C21.047 uF

100V

C43.047 uF

REM

REM

-16V

100V

C18.047 uF

+16V

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 POWERAND 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 OSCILLOSCOPEAND 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:

Sheet

Class Code:

THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO

Drawing Size:

Drawing Type: SchematicTolerance:

Released:

REV Date DESCRIPTION

E

0 7/01/99

2

-

OK

CONTROL ISSUE

SWAPPED J21 PINS 1 & 2, COONECTED J21TO HEADPH GS TO DETACH FROM MAIN GND1

07/28/99

7/01/99

CONTROL ISSUE ECR00047

R990512-01

N00062

C

of

Drawing Title:

Drawing Number:NONE

2

Ecr(s)/Ecn(s)

First Used On:

ST. LOUIS MUSIC, INC

Date:1/14/99

-11880 Borman Drive, St. Louis, MO 63146

Chgd By Appvd by

-

F

BA115a

07S103-XX

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 POWERAND 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 OSCILLOSCOPEAND 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:

Sheet

Class Code:

THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO

Drawing Size:

Drawing Type: SchematicTolerance:

Released:

REV Date DESCRIPTION

E

0 7/01/99

2

-

OK

CONTROL ISSUE

SWAPPED J21 PINS 1 & 2, COONECTED J21TO HEADPH GS TO DETACH FROM MAIN GND1

07/28/99

7/01/99

CONTROL ISSUE ECR00047

R990512-01

N00062

C

of

Drawing Title:

Drawing Number:NONE

2

Ecr(s)/Ecn(s)

First Used On:

ST. LOUIS MUSIC, INC

Date:1/14/99

-11880 Borman Drive, St. Louis, MO 63146

Chgd By Appvd by

-

F

BA115a

07S103-XX

2

SCHEMATIC -BASS AMP

Date

4

3

1K

R1822KR21

C15

.022 uF50V

NOTE: BIAS SETTING AS FOLLOWS; SET AP1 BIAS ADJUST CONTROL FOR 5mV ACROSS R61 WITH NO SIGNAL APPLIED, NO LOAD.

NOTE: R11 & C7 DESIGNATORS ARE NOT USED.

R13

100K

100K

R12

LR

J3

22 uF

C5

50V

22KR16

22K

R15

C4

22 uF50V

270

R3

270

R2

R10

22K

22KR17

P4

50K LIN

P5

50K LIN

2

31

U1:A

TLO-72

6

57

TLO-72

U1:B

CW

CW

P3

50K LIN

U2:A

TLO-72

47KR24

C16

.0022 uF100V

C8

56 pF200V

PAGE_NEXT

CCW

CW P2

20K RA

R20

100K

TLO-72

U2:B

3.3K 1/2WR7

R14

100K

10uF

C9

35V

D31N914 1N914

D5

+40V -40V

VTL-5C7

R81K

D21N914

R23

47KR25

10K

33 pF

C12

200V

NE5532

U3:AC11

10uF35V

S DG

Q6J112

1N914

D4

R41K

R59

1M50V1 uFC44

R63.3K 1/2W

R22

1K

-16V

820 1WR5

33K

R19

33 pF

C10

200V

C17.1 uF100V

R283.3 1W

+40V

47

R33

D71N4744ZENER

Q4

MJE-340

+16VR34220

1KR50

10uF

C31

35V

R41220

D61N4744ZENER

Q2

ASSY P/N 07-103-02

C2.047 uF100V

13

2

XLR M H

J5

R2647

330 pF

C13

100V

U3:B

NE5532

R9220

SLVE_SW

SLEEVE

TIP_SW

RING

RING_SW

TIP

J4T/R/S

C201 uF50V

D81N4744

ZENER

R49

47

SEE NOTE.

MPS-A06

Q3

R444.7K

1KR43

R35220

Q1

MJE-350

-16V

-40V

220R31

1KR42

500AP1

CW

1

2

J21

.1 3WR61

-40V

D91N4744

ZENER

Q5

IRFP-140R