Fender Rumble-350 Schematic

*With S1 pushed in (-6dB)

+16V

100mVAC

TP19

J1

INPUT

C

EXTERNAL FOOTSWITCH

CAUTION:

7

TP33-34 & TP35-36: AC VOLTAGES SHOWN ARE FOR MEASUREMENTS TAKEN BETWEEN TP AND CHASSIS GROUND. THE VALUES WILL BE TWICE AS LARGE
IF MEASURED WITH THE VOLMETER BETWEEN DIRECTLY ACROSS THE AMPLIFIER OUTPUT (BETWEEN TP33-34, OR TP35-36).

NOTE: 125ASX2 MODULE USES SWITCHING TECHNOLOGY RESULTING IN HIGH FREQUENCY NOISE ( >100kHz) AT THE OUTPUT. RECOMMEND USING A LOW­PASS FILTER (SUCH AS THE AP AUX-0025 SWITCHING AMPLIFIER MEASUREMENT FILTER) FOR OPTIMUM VIEWING AND MEASURMENT OF OUTPUT SIGNALS.

C1
47pF

W12

STANDOFF

ST1

GNDCH_ST1

LATCHING SWITCH

OPTIONAL LED

WILL BE DAMAGED. VIEW OUTPUT WITH OSCILLOSCOPE IN DIFFERENTIAL MODE (RECOMMENDED) OR FLOAT OSCILLOSCOPE FROM EARTH GROUND.

D1

R4

10k

R3

D2

1M

-16V

OUTPUT IS NOT GROUND REFERENCED! DO NOT GROUND EITHER TERMINAL (I.E. WITH OSCILLOSCOPE PROBE GROUND LEAD) OR UNIT

HORN

ON/OFF SWITCH

UP

2A

REAR VIEW

COMBO UNIT

INTERNAL SPEAKERS

RED

HORN

B

10" SPKR

10" SPKR

WHITE

BLACK

BLACK+-

+

-

WHITE

+

BLACK

-

410mVAC
*200mVAC

TP20

U1-D

12

14

TL074

13

R2

R7

22k

47k

R5
22k

C4
22

FOOTSWITCH

-6dB

S1-A
S1-B

J8

CH2

REAR PANEL CIRCUIT BOARD

COMBO UNITS ONLY

1A 2A

4B

3B

3B1A

BLACK

WHITE

BLACK

HORN

SWITCH

P7

RED

RED RED

C2

22

R1
100k

R29
22k

R129

1.2k
FTSW_2 FTSW

C82
220pF

4B

R131

RED

RED

WJ5WJ4

47

10%-5W

7.25VAC

TP34

7

R30

1.5k

U1-B

5

TL074

6

C8

GAIN

470pF

250k15A

R15

4.7k

D7

RED

D6

RED

Q3

R14

J174

3.3k

C12

D5

.47

*WHEN THE TIP OF FOOTSWITCH JACK (J8)
IS CONNECTED TO GROUND (SLEEVE) VIA
A FOOTSWITCH OR OTHER CONNECTION.

C26 NOT
STUFFED

C26

W11

SPEAKER OUTPUT PCB - HEAD ONLY

J2

R70

WJ3

J3

18k

RED

(WIRE TO P6)

7.25VAC

TP35

WJ1

WJ2

7.25VAC

TP36

PRIMARY WIRING FOR 100V COMBO UNITS

2A

WHITE

N

GRN/YEL

BLACK

L

3B1A4B

POWER

SWITCH

WHITE

WHITE

BLACK

RED

415mVAC

*When ENABLE (S2)

1.90VAC*
button is pressed in

TP21

7

R31
10k

C22

R18

CW

C13

22

+12.4VDC*

+15.5VDC

TP41

22

R25

CW

10kB

R32

BLEND

100k

C6

+15.5VDC*

0VDC
TP42

R9

100k

R16

6.8k

R17

18k

.01

R19
300

R20

10k

CROSSOVER & SPEAKER HEADER PCB - COMBO UNITS ONLY

WHITE
WJ6

WJ7

BLACK

7.25VAC

TP33

WHITE

BLACK

7

7

CONNECT

TO P101

(COMBO ONLY)

BLACK

WHITE

CONNECT

TO P101

(HEAD ONLY)

BLACK

WHITE

7

100 TO 120V
AUTOFORMER

R6

62k

+16V

R26
10k

C20

2.2

Q6
MPSA63

-16V

280mVAC
415mVAC*

TP40

*When ENABLE (S2)
button is pressed in

4.7k

100k

.001 C5

C7

+16V

Q5
2N4403

S2-A

S2-B

ENABLE

R23

4.7k

R28

R10

220pF

R21

2.2k

C15
1

Q4

2N4403

R13

62k

R12
100k

C10

22

U1-C

10

TL074

9

P1

R22

3.3k

-16V

125ASX2

(P/N 0077199000)

P101

41

Vo+ CH1 (BTL-)
Vo- (not used)
Vo- (not used)
Vo+ CH2 (BTL+)

VOLTAGE SELECTION:

P201

JUMPER INSTALLED AT

230V

P200 = 100-120VAC

21

P201 = 220-240VAC

P200

115V

2 1

LIVE

NEUTRAL

12

P100

CONNECT TO P100

OR

RED

WHITE

125ASX2

STANDOFF

WHITE

BLACK

Q2
J174

D4 D3

8

R11
100k

R96

1M

OVERDRIVE
LED

(BTL-) CH 1 INPUT

(BTL+) CH 2 INPUT

OVER CURRENT

C14
.047

A

POWER

ON/OFF SWITCH

UP

2A

1A 3B

REAR VIEW

PRIMARY WIRING FOR 120V, 220-240V COMBO UNITS,

4B

N

L

& 100-120V, 220-240V HEAD UNITS

3B1A4B

POWER

SWITCH

2A

WHITE

GRN/YEL

BLACK

WHITE

BLACK

8 7 6 5 4 3 2 1

Q1
J113

THERMAL

BTL-SYNC

GND

-24VDC

C3

33pF

ENABLE

+24VDC

P103

13

P2

VOLUME

250k15A

R8

U1-A

2

TL074

3

*When ENABLE (S2)
button is pressed IN

P102

GND
GND

+25V

+24.5VDC

TP1

-24.5VDC
TP2

-25V

250mVAC

CW

1

115mVAC

525mVAC*

TP22

*When ENABLE (S2)
button is pressed in

+15.3VDC*

-15.5VDC
TP18

1 8

R24

4.7

1/2W

R34

4.7

1/2W

TP23

C25

330pF

R40
10k

R35
100k

R41
75k

C27

.1

R42
150k

C28

.022

R43

S4-A

33k

SCOOP

353mVAC

TP31

R111

18k

PW5

0VDC*

+5.0VDC

TP9

*When HEADPHONES
are connected to J7

(BREAKAWAY ON HEAD UNITS)

REAR PANEL CIRCUIT BOARD

MAIN CIRCUIT BOARD

+24.0VDC

TP3

C18
47

C21
47

-24.3VDC
TP4

D12

U2

IN OUT

123

7815

ADJ

C16
.1

R27

47

C19
.1

GND

7915

2 3

U3

268mVAC

TP24

U4-D

12

14

TL074

13

R39
22k

C31
.1

R36
22k

R100
47

D9

D8

1

OUTIN

C24

C32

.022

180pF

R37

56k

R49
100k

C35

S4-B

.01

SCOOP

R54

270k

MAIN CIRCUIT BOARD

REAR PANEL CIRCUIT BOARD

(BREAKAWAY ON HEAD UNITS)

R114

4.99k
1%

U7-D

14

TL074

353mVAC

TP32

R101
47

+16V

C17
22

C23
22

-16V

13

12

S3-B

PUNCH

C30
.068

CH2

-12.7VDC*

-15.5VDC
TP12

+15.5VDC

-15.5VDC

10

R115

4.99k
1%

TP5

TP6

9

C29

2.2
R46
47k

R33

1M

S3-A

PUNCH

R50

4.7k

U4-C

8

TL074

R103

10k

14

R102

15

100

13

CH2

*TP10-13: MEASURED TWO MINUTES AFTER
A 100mV SIGNAL IS APPLIED TO THE INPUT
JACK AND THE VOLUME CONTROL IS SET TO
MAXIMUM.

DO NOT HAVE ANY LOADS CONNECTED
TO THE POWER AMPLIFIER OUTPUT
OUTPUT DURING THIS TEST!

R85

6.8k

Q8

MPSA63

R86

R88

100k

6.8k

-16V_2

GND

C68
220

6.3V

4

U1-E

TL074

11

R48

47k

(80Hz) (5kHz)

C33

.22

C34

.01

R45

270k

+16V_2

+

D

-

-2.4VDC*

R97

300

Q9
Q-2N7000

R44
50kB

BASS

R47

5.6k

U4-A

3

TL074

2

C69

100pF

R104

33k

U7-A

2

1

TL074

3

CH2

10

9

BI

12

BO

CV

U6-B

16

LM13700

0VDC
TP13

R87

R89

4.7k

33k

C571C611C581C62

D

G

S

DGND

C36
.1

4

U5-E

TL074

11

C11
.1

1

C73

.047

CW

R105

33k

R90

33k

+16V_2

R38
10M

STANDOFF

ST6

C9
.1

C44
.1

5

6

R53
68k

TL074

R51

100k

U4-B

7

TL074

R52

100k

U7-B

7

TL074

60mm 12V FAN

D19 NOT
STUFFED

R91

33k

D22

D23

4

U4-E

11

R55
50kB

MID-LEVEL

C40

.033

MID-FREQUENCY

6

5

RED

BLK

D19

STANDOFF

ST5

D16D15D14D13

1

C43
.1

C37
.1

100k10C

353mVAC

CW

R62-B

TP43

D20 D21

+16V_2

P4

R76
180
1W

R92
33k

R57

68k

CW

100k10C
MID-FREQUENCY

(150Hz -1.5kHz)

R98-B

CW

R67
10k

R108

33k

R107
150k

C49
1000
16V

R82
47

GND

+2.6VDC

TP14

R94

2.2k

R95

3.9k

-16V_2

1.28VAC

TP39

C65

.047

Q7
2N4401

CW

.0033

6

TL074

5

+3.5VDC*

+10VDC

+12.8DC

R68

10k

C39

TP10

TP15

5

50kB

TREBLE

U5-B

Q10
2N4401

D17

U6-A
LM13700

273mVAC

TP25

U5-A

3

TL074

2

7

+24.5VDC

7

BI

CV

1

-24.5VDC
TP17

C38

33pF

R56

47k

C48
.0068

R69

6.8k

CH_REF

273mVAC

TP28

353mVAC

TP30

C63

.47

R106

6.8k

CH2CH2

8

+4.0VDC*

0VDC
TP11

D24

R77

100k

D18

TP16

+25V_2

R81
33k

D10

R79
10k

3

+

2

D

4

-

R80
10k

D11
R93
10k

R78
33k

-25V_2

+15.5VDC

R75

C66

.047

C52
220

6.3V

8

BO

GND

1

R119

33k

C76

33pF

U7-C

GND

TP7

8

TL074

C41

33pF

R63

22k

U5-C

TL074

R66

22k

C42

33pF

9

10

C74
470pF

DGND

R60

22k

R58

47

10

9

CH2

FROM SPEAKER
OUTPUT PCB

(HEAD ONLY)

R116

R117

R118

P6

+16V_2

R61

22k

U5-D

13

12

R64

22k

R65

22k

33k

15k

15k

C45

14

TL074

22

R71

50V

R59

47

C46

22

50V

C47

22

50V

100k

CH_REF

FTSW FTSW_2

R72

R73
100k

CH_REF

CH2

CH2

-16V

100k

R123

15k

R122

3

4560

68k

2

R121

R120

47k

10k

C84

100pF

R127

68k

R126

3

4560

15k

2

R124

R125

10k

47k

C85

100pF

U8-A

U9-A

HEAD UNITS

C51
22

P3 P8

POWER

CH2 CH2 CH2 CH2

LED LED

R74

1.5k

C50
22

TL074

4

11

U7-E

-15.5VDC
TP8

C86
.1

C83
.1

C70
.1

8

U8-C

4560

4

-16V_2

4560

C72
.1

C56

.1
U9-C
8

4

11

LM13700

U6-C

6

C55

.1

RIBBON & HEADER (P9-PW9) INSTALLED FOR HEAD UNITS

+25V

-25V

WIRE JUMPERS (W1-10) INSTALLED FOR COMBO UNITS

P9 PW9

+16V

C79

22

50V

1

1

W1

W2

W3

W4

W5

W6

W7

W8

W9

W10

C88

22

50V

CH2

R135

3.3k

R134
100k

CH2

C80

C81

435mVAC

TP37

5

4560

6

R113

435mVAC

TP38

5

4560

6

R128

COMBO UNITS

CH2

-25V_2

+25V_2

R83

C53

1k

220pF

CH2

C54

R84

220pF

1k

CH2

+16V_2

-16V_2

C60
220pF

CH2

C64
220pF

R136

3.3k

R133
100k

273mVAC

TP29

C90
220pF

22

22

U8-B

7

47

U9-B

7

47

ONLYONLY

POWER

R132

1.5k

C87
220pF

CH2

GND LIFT

3

2

1

J9

LINE OUT

R109
47k

R110
47k

C89
.01

C67
220pF

J6

L

AUX IN

R

C71
220pF

CH2

R112

47

C77
220pF

C78
220pF

R137

MAX HP OUTPUT, Vo = 2.99Vrms

47

280mW @ 0.1% THD INTO
32ohms (MIN) PER CHANNEL
BOTH CHANNELS DRIVEN, 100Hz

THIS DOCUMENT CONTAINS INFORMATION OF

A PROPRIETARY NATURE TO FENDER MUSICAL

INSTRUMENTS AND IS SUBMITTED TO YOU IN

CONFIDENCE AND SHALL NOT BE DISCLOSED OR

TRANSMITTED TO OTHERS WITHOUT AUTHORIZ-

ATION FROM FENDER MUSICAL INSTRUMENTS.

CHECKED BY:

DATE:

APPROVED BY:

DATE:

S5-A
S5-B

CH2

CH2

CH2

J7

HEAD PHONES

CH2

DATABASE FILE: Z852S.SCH

270mVAC

TP26

270mVAC

TP27

ENGR:I.KOTHRADE

J4

FX SEND

CH2

J5

FX RETURN

CH2

12348 7 6 5

REV. APPROVEDDATEDESCRIPTION

OUTPUT POWER TEST:

RESISTIVE LOAD CONNECTED AT WJ6-WJ7 (COMBO) OR J2/J3 (HEAD)
RATED LINE VOLTAGE SUPPLIED TO UNIT
SINEWAVE INPUT SIGNAL APPLIED TO
OUTPUT VOLTAGE MEASURED WITH A DVM ACROSS RESISTIVE LOAD
OSCILLOSCOPE PROBE MAY BE CONNECTED EITHER SIDE OF LOAD, BUT

DO NOT GROUND EITHER (+ OR -) CONNECTION TO THE LOAD!

UNDER THESE CONDITIONS, ADJUST INPUT TO VERIFY THE FOLLOWING:

LOAD

8 OHM
(ONSET OF LIMITER)

4 OHM
(ONSET OF LIMITER)

6. AC AND DC VOLTAGES ARE READ WITH RESPECT TO GROUND
WITH A DVM UNDER THE FOLLOWING CONDITIONS:

TP1-18 ARE MEASURED WITH NO INPUT SIGNAL

TP19-40 ARE MEASURED WITH THE FOLLOWING SIGNAL:

5. THIS SCHEMATIC IS FOR PCB FABRICATION P/N 852CFO007

AND PCB ASSEMBLY P/N 852CFO006

4. ALL DIODES ARE 1N4448.

3. ALL POLARIZED CAPACITORS IN uF, 20%; 25V MINIMUM.

2. ALL UNPOLARIZED CAPACITORS IN uF, 10% OR BETTER; 50V MINIMUM.

(POWER SUPPLY BYPASS CAPACITORS ARE 20%).

1. ALL RESISTORS IN OHMS, 5%; 1/4W.

NOTES: (UNLESS OTHERWISE NOTED)

TITLE:

D

RELEASE DATE: 24-NOV-09

R E V I S I O N S

PR852A

EC 4357B

ALL CONTROLS AT 50% ROTATION (12:00).
ALL PUSH-BUTTONS IN THE OUT POSITION
ALL PCBS INTERCONNECTED AND INSTALLED IN CHASSIS
ALONG WITH ICEPOWER 125ASX2 MODULE.
UNIT AT RATED LINE VOLTAGE.
NO SPEAKER LOAD CONNECTED

DC VOLTAGES MAY VARY BY +/-10%.

100mVrms, 100Hz, SINE WAVE APPLIED TO INPUT JACK
AC VOLTAGES MAY VARY BY +/-20%.

24-NOV-09 IDK

30-MAY-10 IDK

7

AUX-IN JACK (J6)

FREQ = 100Hz FREQ = 1kHz

221W (42.0Vrms) 222W (42.2Vrms)
< 0.1% THD < 0.1% THD

400W (40.0Vrms) 400W (40.0Vrms)
< 0.1% THD < 0.1% THD

R

MUSICAL INSTRUMENTS

Corona, CA U.S.A.

SERVICE DIAGRAM, COMBINED

RUMBLE 350

PREAMP PCB

852CFO008DRAWN:I.KOTHRADE

SHEET: 1 OF 2

DD

C

B

A

(schematic)

REV.DRAWING NUMBERSIZE

B