Text preview for : SVT5 Pro Preamp B.pdf part of Ampeg SVT-5 PRO Ampeg SVT-5 PRO Schematics and user's manual.



Back to : SVT 5 Pro.zip | Home

A

B

C

D

E
+15VA
1M

F
NJM2060D IC2B:B
5 6 7

TP11
D9B

OVERDRIVE CHANNEL BREAKOFF 1
C31B
.0047

R18B
100K 1/2W 1%

R52B 6

1N914

C14B
100 pF 200V 1M

R47B
100K

C33B
1

R16B
6.8K

1
6 R51B
100K

SW2B:C GATE
O
7

J18B

1 2 3 4 5 6 7 8 9 10

5 6

IC1B:B
7

C11B
.01 100V
10 9

3

IC1B:A
1

TP8
C27B
1

TREBLE R46B
CW

8

P5B

IC1B:C
8

TP7
R26B
4.7K

NJM2060D +15VA -15VA D4B
1N754 6.8V

10

11

D

S

1

1 D1B R25B
470

NJM2060D R5B
330

2.2

Q2B Q3B
J175
G

D6B

NJM2060D C32B
.0015 100V

-15VA R45B
6.8K

GATE

O

C

SW2B:D

12

C24B

2

100K 1/2W 1%

1

470

10K L

9

R7B

R4B

C

I

Q4B

G

I

S

D

D2B
1N754 6.8V

2N5088

1N914

J175

D3B
1N754 6.8V

R13B
22K

R41B R35B
47K

1N754 6.8V

R42B
10K

R37B
47K

2.2K

6 R24B
100K

C9B
470 pF 100V R9B 3.3M

R44B
10K

OPT1B
6.8K

R38B
15.4K 1%

R43B
15.4K 1%
CW

C25B
.0033 100V

R36B
1K

NJM2060D
13

C17B
470 pF 100V
CW

D5B
1N914

Q1B
2N5088
14

TO J4A (BASS PREAMP "A")
R23B
22K

C18B
100 pF 200V

R40B
47K

12

1

CW

P4B:A
100K RA

P1B
250K A

IC1B:D

P4B:B
10

C4B
10 35V

IC2B:C
8

C23B
56 pF 200V
3

1

100K RA
9

2
R21B
10K

R19B
22K

GAIN SW2B:A BOOST
TO
1

NJM2060D FREQUENCY C22B
.0033 100V

IC2B:A
1

R39B
100K

2

R30B
33K

C20B
.0068

C26B
.015

1

TC
2

TI
3

1

2

NJM2060D
4 5 6

TP9
P2B R28B
10K L 2.2K

C15B
.047 100V

P3B
CW

R31B
100

R20B C12B
2.2K

BOOST

R11B +15VA
100

CW

TO

TC

TI

+14VA C8B
1

10K A

SW2B:B R56B
100K
D

BASS

MID

.1

C10B
.047 100V

G

C6B 1 R12B C7B
1 .047 100V

Q6B
S

Power Table RefDes IC1B +14VA 4 4 +15VA -14VA 11 11 -15VA

J175

1

-15VA
100

-14VA

IC2B

R49B
100K

R53B
100K

12 13

IC2B:D
14

TEST POINT CONDITIONS
AC T.P. VOLTAGE --1.3V pp DC VOLTAGE 12V 0V 0V MUTE BUTTON "IN" WAVEFORM CONDITIONS:

3
G

1

NJM2060D OD LEVEL
CW

* *

TP4

P6B
D S

250K A

TP4 TP5 TP6 TP7 TP7

1 2 3 4 5

1KHZ 35mVrms INPUT SIGNAL CLEAN GAIN, VOLUMES, MASTER @ "10" OVERDRIVE GAIN, TONES @ "5" BUTTONS "OUT" * TEST POINT ON 07565-XX SCHEMATIC

ASSEMBLY PART NUMBER 07-566-01 ASSEMBLY DWG NUMBER 07-566-XX

3

R54B
100K

Q5B
J175

* *

1

5.8V pp .09V pp .8V pp 2.2V pp .3V pp

0V 0V 0V 0V
THE INFORMATION CONTAINED ON THIS DRAWING IS PROPRIETARY TO ST. LOUIS MUSIC, INC

BOOST BUTTON "IN"

0 A
REV

10/31/01 7/26/01 Date

CONTROL ISSUE INITIAL ISSUE

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

TP8 TP9 * TP10 TP11 TP11

0V Drawn: CHAN. SELECT BUTTON "IN"

Signatures:
WFB Checked: Released:

Date:
5/15/01
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.

2.4V pp --

0V 14V

First Used On:

4

SVT5PROa
Drawing Size:

Plot Date: Wed Oct 31, 2001 Plot Time:

C
NONE 2

Drawing Title:

--

0V

GATE BUTTON "IN" W/O SIGNAL

Drawing Type: Schematic Class Code: Sheet 1 of Drawing Number:

BASS PREAMP B 07s566-xx 07 F

Tolerance:

A

B

C

D

E

A

B

C

D

E

F

J19B

1 2

R48B
1 1/2W 5per FP

450V 10

J5B
RING

J3B
RING

TUNER OUT J14B OCTAVE OUT TIP OCTAVE IN RING
1 2 3 4 5 6 7 8

OCTAVE

RING_SW

R3B
2.2K

RING_SW TIP_SW TIP SLVE_SW SLEEVE

C34B
10 100V

C29B R34B D10B D8B
1N4007TR 1KV PIV

TIP_SW TIP 7

1

5

D7B
1N4007TR 1KV PIV

R55B R50B
1M

1

J20B

CLEAN/MIX OUTPUT CLEAN OUTPUT

1
J2B

2.2K

SLVE_SW SLEEVE 8

D11B
1N4007TR 1KV PIV

1N4007TR 1KV PIV

C28B
10 450V

47K

C36B
47 450V

2

C30B
10 450V

OD OUTPUT C35B 4 R33B
2.2K .1

AUDIO GND POST SELECT OUTPUT A

3 R2B
2.2K
TIP TIP_SW SLVE_SW

CLEAN/MIX

5

5

5 5

TIP CLEAN TIP_SW SLVE_SW SLEEVE

J6B FX SEND

POST SELECT OUTPUT B TO J6A

3

(BASS PREAMP "A")
3 SW1B MIX/SEPARATE R1B
2.2K

SLEEVE

TIP TIP_SW SLVE_SW

J1B OD

4 R32B
2.2K

J7B
TIP

1

C21B
2.2

I

I

4

CLEAN FX RTN
2 C C 5

TIP_SW SLVE_SW SLEEVE

SLEEVE

3

O

O

6

LINE OUTS 2
R29B
2.2K

3

4

J4B
J15B CHANNEL/COMBINE FS
1 2 3 4 5 6 7 8 RING RING_SW TIP_SW TIP 7 SLVE_SW SLEEVE 8

J8B
TIP

OD FS GND SWITCH COMBINE FS RING COMBINE FS RING SWITCH CHANNEL FS TIP CHANNEL FS TIP SWITCH DIRTY GND

2

OD FX SEND

TIP_SW SLVE_SW SLEEVE

L2B 4
OD/MIX FERRITE
O C I

R27B
2.2K

C19B
2.2

TIP

J9B OD FX RTN

DIRTY GND DIRTY GND TO J7A

C3B C2B 2
.1 .1

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

J17B

1 2 3 4 5 6 7 8 9

R17B
1M

C13B
22

TIP_SW SLVE_SW SLEEVE

SW3B:C

(BASS PREAMP "A")
3

MIX/SEPARATE BREAKOFF
J10B
3 1
I C O

4 7
O C I

7
OD/MIX

4 SW4B:A

SW3B:A
TO TC TI

SW3B:D

L1B
FERRITE

R22B
6.8K

2

CLEAN BAL OUT

GND LIFT 4

J16B

10 11 12

1

C16B R15B
2.2K
2
TO TC TI

3

BIAMP LOW FREQ OUTPUT BIAMP HIGH FREQ OUTPUT TO J5A

3

SW3B:B

.0022 100V

3
J11B
3

4 5

(BASS PREAMP "A")

SW4B:B
1
I C O

R14B
2.2K

6 7 8

R10B
6.8K

2

C5B 4
.0022 100V

OD BAL OUT GND LIFT 4

4

TO J10A

(BASS PREAMP "A")

J12B
RING RING_SW

LOW OUT

R8B
2.2K

TIP_SW TIP 7 SLVE_SW

0 A
REV

10/31/01 7/26/01 Date

CONTROL ISSUE INITIAL ISSUE

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.

SLEEVE

8

DESCRIPTION

Ecr(s)/Ecn(s)

Chgd By

Appvd by

Date

C1B
.1

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

Signatures:
Drawn: Checked: WFB

Date:
5/15/01
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.
R6B
2.2K

4

First Used On:

4

TIP TIP_SW

J13B HIGH OUT

Released:
Plot Date: Wed Oct 31, 2001 Plot Time:

SVT5PROa
Drawing Size:

C
NONE 2

Drawing Title:

SLVE_SW SLEEVE

Drawing Type: Schematic Class Code: Sheet 2 of Drawing Number:

BASS PREAMP B 07s566-xx 0 F

Tolerance:
4

A

B

C

D

E