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A ON MAIN BD
R12A
100K

B
+14V D25A
1N914
3 2

C

D
R60A
100K

E
J

F
TO SHEET 2
+15V

IC1A:A
1

FROM SHEET 2
R32A
100K

B Q7A

+15V

D5A
1N914

TLO-72

C16A
.0047 100V

R41A
100K

R33A
100K

C17A C
.1 100V

R35A
68K

2N5210

A R31A
10K

1
J1A INPUT
RING RING_SW TIP_SW TIP SLEEVE

TO SHEET 2

R8A
100K

Q6A -14V
G D S

TP1
R40A C19A
220 pF 400V 330K

1

TO SHEET 2
R46A
100K

J175

-15V

W2A WHT WIRE W3A 20 G RED W1A BLUE WIRE

R7A
47.5K 1%

IC3A:B
CW

SW1A:A
TO TC TI

Q5A
G D

J3A

C3A
1 2

6

R34A R2A
221K 1/2W 1% .1 400V 100K 1/2W 1%

TREBLE

P4A
250K A

K
7

5

NE5532

S

TO SHEET 2

-15 db SW1A:B
TO TC

C59A
.1 50V

J175

FROM J14A

R1A
12 1/2W

R59A
220K

+14V

+15V R4A
12 1/2W

R36A
330K

D4A
1N914
5 6

C20A
.047 400V

CW

D15A
TI

BASS

P2A
250K A

CW

P1A

IC1A:B
7

TP2

1N914

GAIN
1M LOG

C7A
1 50V

-15 db

R9A
10K 1%

+15V R20A +15V R47A R37A
4.7K

J2A

D26A
1N914

R11A
1M

TLO-72 C10A
100 pF

1 2 3

D10A
1N914

OPT2A
33K

4.7K
CW

MID

P3A
50K A

-14V +15V R25A
2.7K
O 7

R19A 200V R18A
68K 47K

R5A

TP4
Q2A
D S

22K

2

TO J12A

1M 1/2W 1%

R6A
G

D9A
1N914

R30A
100K

Q4A

SEVEN

C24A
.0022 100V

SW2A:C
C 8 I 9

C9A
.047 100V

TO SHEET 2
100K

2
R14A
4.7K

J175

C4A
.01 100V

2N5210

SW1A:C
O

10

11

R137A +15V
2.2M

RED

12

D1A C5A
I

R29A C12A
1 1M

C

O

C

I

C14A
470 pF 100V

PEAK SW2A:D Q3A

.1

D12A SW1A:D
O C

R28A
220K

R13A R15A
MPS-A13 1.5K 4.7K

Q1A
2N5210

1N914

C11A
1

R24A
100K

I

SW2A:A
TO TC TI

C13A
.015

C8A
.022

1

2

3

4

5

6

R27A
100K

FROM SHEET 2
L D11A

TO

TC

TI

R48A
47K

SW2A:B

C22A
1N914 .022

FROM SHEET 3
MFS

3

COMPRESSOR SW3A:A
TO 1 TC 2 TI 3

-15V OC1A R64A
47K

3

R50A
330K

R45A
220

TP5
R51A
47K
10 9

R22A
470K VTL-5C3
5 D S 6

IC4A:C
8

CLFXSND TLO-74

R38A
47K
4 5 6 TO TC TI

R49A
3

Q8A R42A
G

IC2A:B
7

3 2

IC2A:A
1

D8A
1N914

R21A
22K

IC3A:A
1

TP3

1M

TO SHEET 2

SW3A:B COMPRESSOR

C18A
.1

100K J112

TLO-72

D6A
1N914

R39A -15V
220K

TLO-72 R17A
470K

2

OPT1A
1N914

NE5532 R44A
22K

+15V C44A
.047 100V

R26A
100K

C15A
1

+15V C23A
.047 100V

R43A
22K

D7A
1N914

-15V

-15V

R23A

R16A
470K

1 0
REV

5/23/03 8/30/01 Date

NOISE ISSUES, BOARD TO -02 CONTROL ISSUE

N01232

CAUTION: THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL. TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND THAT EXPLAINED IN THE OPERATING INSTRUCTIONS.

470K

DESCRIPTION

Ecr(s)/Ecn(s)

Chgd By

Appvd by

Date

FROM J2A J12A
1 1 2 3

J11A

THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO ST. LOUIS MUSIC, INC

R133A
47.5K 1%

R131A
221K 1/2W 1%
1 2 4 3 9

2

Signatures:
Drawn: Checked: Released:
Plot Date: Fri Jun 13, 2003 TO J3A Plot Time:

Date:
WFB 6/4/01
11880 Borman Drive, St. Louis, MO 63146

J13A:A

4
NOTES: 1) CAUTION: SHOCK HAZARD!! THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE TOUCHING INTERNAL PARTS. 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.

TO J20B (ON BASS PRE-AMP "B") J14A

First Used On:

4

ON TUBE BREAK-OFF BD

OPT4A
22 35V

J13A:B
6 7 8 5 9

1 2

Drawing Size:

C
NONE 4

Drawing Title:

R132A
3.32K 1/2W 1%

Drawing Type: Schematic Class Code: Sheet 1 of

PWA-BASS PREAMP A
Drawing Number:

Tolerance:

07S565 F

A

B

C

D

E

A ON MAIN BD
CLFXSND R56A 150K C26A .015 R54A 2.2K
6 7 5

B
D17A
1N746ARL 3.3V

C
+15V R74A 10K Q15A R61A 10K 2N5210
2 1 Q Q

D
IC5A:B
SET DATA CLK RESET Q Q 8 9 11 10

E
+15V

F
TP14
R134A R84A
47K

IC5A:A
SET DATA CLK RESET 6 5 3 4

R57A 3.3K C27A
1 50V

R58A 10K
2

IC4A:A
1 3

OCTAVE SECTION
R80A 22K Q17A R82A
G D 10 9

C31A
.01 100V

12 13

EIGHT
100K

Q16A:A
MPQ2222A

R79A OCTFS
1K

FROM SHEET 1

CD4013

1

TLO-74 R63A 100K

IC6A:C
8

CD4013

R89A 10K C34A

R87A 10K C38A R86A .22

C36A .22 IC6A:D
12 14 13

FROM SHEET 3

R70A
100K
10

C21A 2.2 J4A OD INPUT AUDIO GND GATE SENSE +15V -15V SWITCHING DIRTY GND OD FX SEND OD FX RET OD OUTPUT

IC4A:B R55A 220

IC7A:C
8

1

TLO-74

.22

Q11A
G

9

TLO-74
1 2 3 4 5 6 7 8 9 10

C35A .033
G

D

S

A

TO SHEET 1 (A & C)

TP15

100K J175

S

10K

C39A
1

R101A
47K J175
CW

TLO-74 P6A
50K L

TLO-74

C +15V -15V R72A
100K

Q12A
J175

12 13

IC4A:D
14

5 6

IC6A:B
7

D28A
1N914

D29A EIGHT
1N914
D S

R91A TLO-74

OCTAVE R97A
10K

BIAMP

TO SHEET 3

VOLUME
250K L

CW

TLO-74 C28A R62A
100K 2.2

R95A
10K

P7A:A MASTER
100K RA

TP6
R93A
10K
2

10K

CW

R92A
22K

IC6A:A R94A
1

IC7A:B
6 7 5

1 2 3 4 5

J6A OCTAVE OUT TIP OCTAVE OUT TIP SW CLEAN/MIX OUTPUT CLEAN OUTPUT OD OUTPUT AUDIO GND POST SELECT OUTPUT A POST SELECT OUTPUT B TO J14B (ON BASS PRE-AMP "B") OD FS GND SWITCH COMBINE FS RING COMBINE FS RING SWITCH CHANNEL FS TIP CHANNEL FS TIP SWITCH DIRTY GND DIRTY GND DIRTY GND

D30A SEVEN FROM SHEET 1
1N914

R65A
47K

P5A

C61A +15V R66A
47K 100 pF 200V

3

10K

TLO-74

TLO-74

TO J18B
(ON BASS PRE-AMP "B") R135A
100K

R73A

R81A
47K

C37A
2.2

R100A
10K

12 13
CW

IC7A:D
14

6

TP13

10K

C60A
.22 50V

2
R136A
100K

C32A R77A
100K .022 100V

P7A:B MASTER
100K RA

TLO-74 R99A
33K

+15V

PREOUT1 PREOUT2

7 8

TP10
R96A Q18A
S D G

Q16A:C

TO SHEET 3 J7A

2

22K

MPQ2222A

Q16A:D
MPQ2222A

R90A
10K

R88A C42A
.22

1 2 3 4

C41A
.22

10K

+15V R103A
470K

R78A
47K

J175

Q20A
MPS-A63

+15V R83A SW3A:C

5 6

R105A
1.8K

R106A
2.7K

7
9 8 7 I C O

D3A

D24A
3.3V 1N746ARL

1.5K

8

COMBINE
I 12 C 11 O 10

TO J15B (ON BASS PRE-AMP "B") SW4A:A +15V
TO TC TI

BI-LEVEL

+15V R69A
8.2K

C29A
.22

+15V R85A
1.5K

SW3A:D

FROM SHEET 1 J FROM SHEET 1 K

1 2 3

J5A TUNER OUTPUT PRE BAL OUTPUT CLEAN FX SEND CLEAN FX RETURN PRE AUDIO GND OD FX SEND OD FX RETURN CLEAN BAL OUTPUT OD BAL OUTPUT AUDIO GND BIAMP LOW FREQ OUTPUT BIAMP HIGH FREQ OUTPUT TO J17B (ON BASS PRE-AMP "B")

D21A D18A
1N914 1N914

R75A
220K 2N5210

Q14A

Q16A:B
MPQ2222A

R67A
10K

D20A 1N746ARL 3.3V

CHANNEL
TO TC TI

R68A
47K

TO SHEET 1
B

4 5 6

Q13A

3

TP12

SW4A:B R71A
470K 2N5210

7 8 9 10

3

TO SHEET 1
D23A L
1N914

FROM SHEET 3 LOW_F FROM SHEET 3 HIGH_F

11 12

D22A
1N914

C25A
22

+15V +15V D13A
1N914

1 0
REV

5/23/03 8/30/01 Date

NOISE ISSUES, BOARD TO -02 CONTROL ISSUE

N01232

CAUTION: THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL. TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND THAT EXPLAINED IN THE OPERATING INSTRUCTIONS.

DESCRIPTION

Ecr(s)/Ecn(s)

Chgd By

Appvd by

Date

-22V

D14A
1N914

Q9A
G D S

THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO ST. LOUIS MUSIC, INC

Q10A D27A
1N914
G D

D19A
1N914

Signatures:
Drawn: WFB Checked: Released:
Plot Date: Fri Jun 13, 2003

Date:
6/4/01
11880 Borman Drive, St. Louis, MO 63146

R52A D16A
1N914 100K

4
NOTES: 1) CAUTION: SHOCK HAZARD!! THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE TOUCHING INTERNAL PARTS. 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.

J112
S

J112

R115A
220K

-15V R53A
100K

First Used On:

4

-15V

Drawing Size:

C45A
10 35V

C
NONE 4

Drawing Title:

Plot Time:

Drawing Type: Schematic Class Code: Sheet 2 of

PWA-BASS PREAMP A
Drawing Number:

Tolerance:

07S565 F

A

B

C

D

E

A

B ON MAIN BD

C

D
+15V

E
TO SHEET 2 OCTFS MFS
1 2 3 4 5 6
7 8 9

F TO POWER AMP
J8A OCTAVE FS MUTE FS (RING) MUTE RING SWITCH N/U N/U AUDIO GROUND CHANNEL A OUT CHANNEL B OUT HF OUT LF OUT LIMITER DEFEAT LIMIT LED

+15V R116A
1K

+15V R3A
47

+14V C1A

+15V

R76A
470

+8V C33A
1 50V
#4

BAL OUT XFMR BREAKOFF T2A
#7 #8 #9

R113A
22K

TO SHEET 1

10 35V

1 2 3 4

J10A

R104A CLEAN BAL OUTPUT CLEAN BAL OUTPUT CLEAN XFMR INPUT CLEAN XFMR GND OD XFMR INPUT OD XFMR GND OD BAL OUTPUT OD BAL OUTPUT (ON BASS PRE-AMP "B") Q19A
MPS-A13 1.8K

C6A

1

.047

C55A
.047 100V

C30A
.047

+V C50A
1

C2A R10A

4:1
#2

10 35V

O

C

I

D2A
YEL

SW4A:C LIMIT DEFEAT C43A
.001 100V
O 10

D-GND -15V

R107A
100K

FROM SHEET 2

PREOUT1 PREOUT2

7 8 9 10

1

-15V

47

-14V T1A
#4 #7

5 6

SW4A:D
C 11 I 12

4:1 FROM PWR AMP -22V N/U DIRTY GND -15V +15V J9A
1 2 3 4 5
#2

7
#8

11 12

8
#9

-22V

TO J16B

R108A -15V
1K

+15V

TP16
R130A
2.2K

C58A
22 16V

R124A
3.57K

BALANCE P9A
10K L
CW

C40A

R125A
3.57K 1%

1%

2
BIAMP

.047 100V

TP17
C56A
.0033 100V

R102A
10K

IC7A:A
3 1 2

BI-AMP CROSSOVER C57A IC8A:B
.0033 100V

R128A
2.2K

2

FROM SHEET 2

C52A
22 16V

TLO-74 R120A R127A
10K
CW

R117A
47K
6

R129A
7

R121A
47K
2

1M

IC8A:A
1 3

R123A
1M
CW

R119A
47K
13

IC8A:D
14 12

5

1M

R122A
1M
CW

R118A
47K
9

IC8A:C
8

TLO-74 P8A:A
100K L
CW

TLO-74 P8A:B
100K L

P8A:C C54A
.0033 100V 100K L

TLO-74

10

P8A:D
100K L

TLO-74 C51A
.0033 100V

XOVER FREQ. R111A
3.57K 1%

XOVER FREQ. R109A
3.57K 1%

XOVER FREQ. R112A
3.57K 1%

XOVER FREQ. R110A
3.57K 1%

C53A
330 pF 100V

C47A
22 16V

C46A
22 16V

C49A
22 16V

C48A
22 16V

R126A
2.49K 1%

3
R98A
15.4K 1%

R114A
10K 1%

3

1 0
CAUTION: THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL. TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND THAT EXPLAINED IN THE OPERATING INSTRUCTIONS. REV

5/23/03 8/30/01 Date

NOISE ISSUES, BOARD TO -02 CONTROL ISSUE

N01232

DESCRIPTION

Ecr(s)/Ecn(s)

Chgd By

Appvd by

Date

THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO ST. LOUIS MUSIC, INC

Signatures:
Drawn: WFB Checked: Released:
Plot Date: Fri Jun 13, 2003 Plot Time:

Date:
6/4/01
11880 Borman Drive, St. Louis, MO 63146

4
NOTES: 1) CAUTION: SHOCK HAZARD!! THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE TOUCHING INTERNAL PARTS. 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.

First Used On:

4

Drawing Size:

C
NONE 4

Drawing Title:

Drawing Type: Schematic Class Code: Sheet 3 of

PWA-BASS PREAMP A
Drawing Number:

Tolerance:

07S565 F

A

B

C

D

E

A

B
TEST POINT CONDITIONS 1 2 3 4 5 1KHZ 35mVrms INPUT SIGNAL CLEAN GAIN, VOLUMES, MASTER @ "10" OVERDRIVE GAIN, TONES @ "5" BUTTONS "OUT" * TEST POINT ON 07566-XX SCHEMATIC

C

D

E

F

1

1

TEST POINTS
AC T.P. VOLTAGE 2.5V pp 0.4V pp 1.4V pp DC VOLTAGE 0V 0V 0V PAD BUTTON "IN" WAVEFORM CONDITIONS: T.P. AC VOLTAGE ---DC VOLTAGE 14V 0V 0V COMBINE BUTTON "IN" CHAN. SELECT BUTTON "IN" WAVEFORM CONDITIONS:

TP1

TP12

TP1 TP2 TP3 TP3 TP4

TP12 TP13 TP13

----1.3V pp

1.5V 1.8V 12V 0V 0V MUTE BUTTON "IN" COMPRESSOR BUTTON "IN"

---8V 0.4V pp

14V 0V 15V 4V 0V

2

TP14 TP14

2
OCTAVE FOOTSW. CLOSED

TP4 TP5 TP6 * * TP7 TP7

TP15 TP16 TP16 TP17

FREQ. CCW; BAL CW FREQ. CW; BAL CCW FREQ. CW; BAL CCW FREQ. CCW; BAL CW

5.8V pp .14V pp .7V pp 2.2V pp .3V pp

0V 0V 0V 0V 0V BOOST BUTTON "IN"

0V 0.4V pp 0V

0V 0V 0V

CLIPPED CLIPPED

TP17

* *

TP8 TP9 TP10

CLIPPED

3
2.4V pp -0V 14V
RefDes Value TLO-72 TLO-72 NE5532 TLO-74 CD4013 TLO-74 TLO-74 TLO-74 4 4 4 11 11 11 -14V 4 8 8 4 4 4 11 14 7

3
CLIPPED CHAN. SELECT BUTTON "IN" * TP11 TP11
Power Table +15V -15V +14V 8 +8V D-GND

*

--

0V

GATE BUTTON "IN" W/ NO SIGNAL

IC1A IC2A IC3A IC4A IC5A IC6A IC7A IC8A

1 0
REV

5/23/03 8/30/01 Date

NOISE ISSUES, BOARD TO -02 CONTROL ISSUE

N01232

CAUTION: THIS SCHEMATIC IS PROVIDED FOR USE BY QUALIFIED PERSONNEL. TO AVOID RISK OF ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. DO NOT PERFORM ANY SERVICING BEYOND THAT EXPLAINED IN THE OPERATING INSTRUCTIONS.

DESCRIPTION

Ecr(s)/Ecn(s)

Chgd By

Appvd by

Date

THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO ST. LOUIS MUSIC, INC

Signatures:
Drawn: WFB Checked: Released:
Plot Date: Fri Jun 13, 2003 Plot Time:

Date:
6/4/01
11880 Borman Drive, St. Louis, MO 63146

4
NOTES: 1) CAUTION: SHOCK HAZARD!! THIS UNIT CONTAINS HAZARDOUS VOLTAGE. DISCONNECT POWER AND BE SURE POWER SUPPLY IS DISCHARGED BEFORE TOUCHING INTERNAL PARTS. 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.

First Used On:

4

Drawing Size:

C
NONE 4

Drawing Title:

Drawing Type: Schematic Class Code: Sheet 4 of

PWA-BASS PREAMP A
Drawing Number:

Tolerance:

07S565 F

A

B

C

D

E