©2007 LOUD Technologies Inc. All rights re served Bass Amplifi er PCB Schematics PAGE 1 BA-115HPT

12-29-05

01/04/06

2-2-06

C

WFB

RLB

ABC

4

CAUTION:

A B C D

Tolerance:

Plot Time:

Plot Date:

E

R01838

R01846

F

4

2

NOTES:

1

Checked:

Drawn:

Released:

REV Date

Sheet 1 of

NONE

3

Date:5-9-05

Appvd by

3

1

A B C D E F

2

Thu Mar 23, 2006 Drawing Title:

1901 Congressional, St. Louis, MO 63146

ST. LOUIS MUSIC, INC

3

Signatures:

Drawing Number:07S697

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:

INITIAL ISSUE

CHG C55 P/N, DELDNP NOTES

CHANGED J14 TO J19 ON WIRING DIAGRAM

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.

12-29-05

01/04/06

2-2-06

C

WFB

RLB

ABC

4

CAUTION:

A B C D

Tolerance:

Plot Time:

Plot Date:

E

R01838

R01846

F

4

2

NOTES:

1

Checked:

Drawn:

Released:

REV Date

Sheet 1 of

NONE

3

Date:5-9-05

Appvd by

3

1

A B C D E F

2

Thu Mar 23, 2006 Drawing Title:

1901 Congressional, St. Louis, MO 63146

ST. LOUIS MUSIC, INC

3

Signatures:

Drawing Number:07S697

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:

INITIAL ISSUE

CHG C55 P/N, DELDNP NOTES

CHANGED J14 TO J19 ON WIRING DIAGRAM

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.

-50V

+50V

2

2

D

0

PAGE_NEXT_A

HPGS_A

+16VA

TO J31SEE SHT 3PRE AMP

R7

270K1/4W5per

2

+50V

680R45

2

PAGE_NEXT_A

-16VA

2TP12

R38

1K

D17

1N91475V PIV

C34

330 pF100V

47R64

R51

33K

C23

33 pF200V

-16VA

CW500

AP1

BIAS

330R63

TP10

2

2

150V

C29

MPS-A06Q3

+16VA

1KR55

D10

10V1N4740

D8

10V1N4740

.3310W

R72

R70

47

R71

47

.3310W

R73

L1

.5 uH

.3310W

R75

2-15-06

03/23/06

RLB

WFB

1

2

3

4

5

6

7

8

J29

R483.3K

1/2W

R46

10K

75V PIV1N914D14

C35

33 pF200V

2

31

U3:A

NE5532

D11

75V PIV1N914

C44150V

2

4.7KR50

D9

75V PIV1N914

R56

47

D20

75V PIV1N914

.3310W

R74

R65

11W

TP11

2

1J3

-16VA

-16VA

800mVRMS

-50V

ADDED R7

CONTROL ISSUE

HPGS_A

R60

47KS D

G J112Q10

D13

1N91475V PIV

SEE NOTE.BIAS AJUST

2.0VRMS

220R41

2270R67

R52680

G

D

SIRFP-140RQ8

G

D

SIRFP-140RQ5

2

.1C26

100V

26.3VRMS

G

D

S

IRFP-9140RQ11

G

D

S

IRFP-9140RQ4

R57

47

R01852

VTL-5C7OC1

SDGJ112

Q9

C31

1035V

MJE-350Q6

6

57

U3:BNE5532

220R43

270R581K

R42

MJE-340Q7

C46

1035V

R47

1/2W3.3K

R59

1M

3.31W

R39

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.

NOTE: SET BIAS VOLTAGE FROM COLD START ACROSS R72 - R75 , 15 -20 mV DC AVERAGE , NO SIGNAL, NO LOAD.

©2007 LOUD Technologies Inc. All rights re served Bass Amplifi er PCB Schematics PAGE 2 BA-115HPT

12-29-05

01/04/06

2-2-06

C

WFB

RLB

ABC

4

CAUTION:

A B C D

Tolerance:

Plot Time:

Plot Date:

E

R01838

R01846

F

4

2

NOTES:

1

Checked:

Drawn:

Released:

REV Date

Sheet 2 of

NONE

3

Date:5-9-05

Appvd by

3

1

A B C D E F

2

Thu Mar 23, 2006 Drawing Title:

1901 Congressional, St. Louis, MO 63146

ST. LOUIS MUSIC, INC

3

Signatures:

Drawing Number:07S697

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:

INITIAL ISSUE

CHG C55 P/N, DELDNP NOTES

CHANGED J14 TO J19 ON WIRING DIAGRAM

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.

12-29-05

01/04/06

2-2-06

C

WFB

RLB

ABC

4

CAUTION:

A B C D

Tolerance:

Plot Time:

Plot Date:

E

R01838

R01846

F

4

2

NOTES:

1

Checked:

Drawn:

Released:

REV Date

Sheet 2 of

NONE

3

Date:5-9-05

Appvd by

3

1

A B C D E F

2

Thu Mar 23, 2006 Drawing Title:

1901 Congressional, St. Louis, MO 63146

ST. LOUIS MUSIC, INC

3

Signatures:

Drawing Number:07S697

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:

INITIAL ISSUE

CHG C55 P/N, DELDNP NOTES

CHANGED J14 TO J19 ON WIRING DIAGRAM

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+

0

2

D

PWR SWITCH

B+

RED

RED

2.5A

TP15

HV

+50V

03/23/06

+16VA

WFB

LINECORD

HV

FC2

2

10C37

450V

4A

J19

J15

J12

J11

2

D21

1N40071KV PIV

2

.0033C25

250V

D23

1N40071KV PIV

J17

J16

2

ACNEUTRAL

2.5A

ORG

ORG

GRN

D25

-50V

2

ACNEUTRAL

220016V

C52220016V

C70

.1C38

100V

.1C32

100V

TP14

2-15-06

TO J32SEE SHT 3PRE AMP

-16VA

RLB

FC1

FUSE=SLO BLO

J13

C28

10450V

10450V

C36

.0033C50

250V

100200V

C45

ACLINE

D24

1KV PIV1N4007

ACLINE

2 D-GND

2

2 D-GND

.047C30

100V

1

2

3

J33

J11 BROWN

J7 WHT

J16 BLUE

J12 BLU/WHT

J13 BLK

CHASSIS GROUND

NET00087

NET00086

WHT

BLK

J7 VIOLET

J11 GRAY

J15 BROWN

J19 WHT

J12 BLUE

J17 BLU/WHT

J13 BLK

J20

J24

ADDED R7

CONTROL ISSUE

1N4007D15

1KV PIV

J9 VIOLET

J17 GRAY

100VAC50/60HZ

230VAC50/60HZFUSE=SLO BLO

ACLINE

J9

J8

J18

J10

D16

1N40071KV PIV

J7 VIOLET

J11 GRAY

J15 BROWN 240VAC50/60HZFUSE=SLO BLO

J19 WHT

J12 BLUE

J13 BLU/WHT

J17 BLK

D182D-GND 2D-GND

R44

6.2

J21

560080V

C54

R66

33010W

ACVDCV

560080V

C51

J22

BR1

KBU1004G

R68

33010W

ACVDCV

R01852

F1

4 A SB

J6

R62

11/2W

5per FP

ACNEUTRAL

J14

1MR61

D19

J25

EXPORT WIRING

POWERTRANSFORMER

100-120V 50/60Hz 4a SB220-240V 50/60Hz 2.5a SB

©2007 LOUD Technologies Inc. All rights re served Bass Amplifi er PCB Schematics PAGE 3 BA-115HPT

12-29-05

01/04/06

2-2-06

C

WFB

RLB

ABC

4

CAUTION:

A B C D

Tolerance:

Plot Time:

Plot Date:

E

R01838

R01846

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

Thu Mar 23, 2006 Drawing Title:

1901 Congressional, St. Louis, MO 63146

ST. LOUIS MUSIC, INC

3

Signatures:

Drawing Number:07S697

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:

INITIAL ISSUE

CHG C55 P/N, DELDNP NOTES

CHANGED J14 TO J19 ON WIRING DIAGRAM

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.

12-29-05

01/04/06

2-2-06

C

WFB

RLB

ABC

4

CAUTION:

A B C D

Tolerance:

Plot Time:

Plot Date:

E

R01838

R01846

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

Thu Mar 23, 2006 Drawing Title:

1901 Congressional, St. Louis, MO 63146

ST. LOUIS MUSIC, INC

3

Signatures:

Drawing Number:07S697

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:

INITIAL ISSUE

CHG C55 P/N, DELDNP NOTES

CHANGED J14 TO J19 ON WIRING DIAGRAM

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.

H

0

D

PAGE_NEXT

-16V

OUT_A

IN_A

IN

OUT_A

03/23/06

-16V

WFB

-16V1

+16V1

MUTE

TO J29SEE SHT 1PWR AMP

HPGS

+16V

IN_A

TO J26

-16V

75V PIV1N914D27

1K1/2W1per

R37

4

100250V

C53

OUT

C2

150V+16V

R10

220

R12

22K

6.81K1/2W1per

R78

V2:B

9-PIN

1

2

3

J5

470KR31

R96

2.2K

R98

10K

CW50K L

GAIN

P1

3.8VRMS

100C68

35V

POWER

100C60

35V

D1

RED

C27

.2250V

C66.047100V

R97

22K

C59

.001100V

22C8

16V

R9

100

22C5

16V

R5

100

TP8

R27

47K

C33

.2250V

47KR92

R81

47K

C47

.0022100V

47KR86

R8222K

22KR83

C41

.2250V

TP4

R29100K

2-15-06

R15

10K

6

57

U2:B

TLO-72

4.7KR104

R87

22K

450mV RMS

22KR84

R103

22K

C7

2250V

250mV RMS

RLB

1.15VRMSJW51

JW52

1.15VRMS

R6

22K

100K

R4

4

+16V

680KR2

4

47.5K1/2W1per

R36

9-PIN

V2:A

1MR33

2

31

U1:A

TLO-72

33.2K1/2W1per

R69

4

C9

150V

4

C65

100 pF200V

6

57

U1:B

TLO-72

C67

150V

C63

.03350V

C22

.03350V

C64

.01550V

+16V

2

31

U2:A

TLO-72

R32

1K

.047C56

100V

C57

.02250V

C40

.2250V

22KR93

R9447K

C69

1035V

I

C C

O O

I

SW1

R95

22K

76

5 U7:B

NE5532

R105

270

.047C62

100V1

2

3

4

5

6

7

8

J31TO J35

C-GNDB

IN

H

TUNER OUT

ADDED R7

1

2

3

4

J26

4

TO J33SEE SHT 2POWER SUPPLY

5 D-GND

100 pFC3

200V

1

2

3

4

J35

R3

6.8K

OUT

TP1

D12

16V1N5353B

C24

.1400V22.1K

1/2W1per

R3522C55

35V

5

D-GND

R494.7K

R90

2.2K

C39

2.250V

R76

47K

R53

47K

100C4

35V

R77

22K

R89

4.7K

R79

47K

C21.047100V

C43.047100V

R99

1K

CW50K LP7

MID

6

57

U4:B

TLO-72

R11

22K

1.1VRMS

R10022K

R101

22K

R102

22K

R01852

R85

22K

R88

270

PAGE_NEXT

HPGS

TP7

1

2

3

J32

.047C1

100V

R40

47K

75V PIV1N914D22

TIP

SLVE_SW

TIP_SW

SLEEVE

J10 dB

D26

16V1N5353B

R1

2.2K1/2W

C42

.0047100V

100KR13

R91

22K

TP2

C48

2.250V

CW

LOW

50K LP6

CW50K LP8

HIGH

C61

56 pF200V

R1447K

R30

22KR80100K

C49

.2250V

CCW

3

4

5

CW

CMNS1

STYLE

C58

2250V

12

3U7:A

NE5532

2

31

U4:A

TLO-72

J30

CD INPUT

1

3

2

J28

CW

P920K RA

LEVEL TP6TP5

TP3

TIP

SLVE_SW

TIP_SW

SLEEVE

J215 dB

CONTROL ISSUE

700mV RMS

450mV RMS

Power TableRef DesU1U2U3U4U7

Device(Type)3707201_3707201_3753201_3707201_3753201_

Package8DIP_38DIP_38DIP_38DIP_38DIP_3

-16VA

4

+16V188

-16V

44

+16V

88

-16V144

+16VA

8

SLVE_SW

SLEEVE

TIP_SW

RING

RING_SW

TIP

J4