PROEL PRL Series Betriebsanleitung

PRL500

PRL900

PRL1300

PRL POWER AMPLIFIERS

Technical Service Manual

PRL500 -900 -1300 T e s t & C a l i b r a t i o n

Required Test Equipment:

•Function Generator

•20 Mhz Dual-channel Oscilloscope

•Power Load Bank (4Ω-350W min.)

•2 Digital Multimeters (Tester)

•PROEL Test Cable

•Variac (0V ac –230V ac, 15A)

Test Procedure

Connections:

•Connect the Function Generator output on CH1 input Jack or XLR socket.

•Connect the Power Load Bank with Speakon on the output sockets.

•Connect the Dual-channel Oscilloscope on Binding Post outputs.

•Connect the PROEL Test Cable to the TP Test Points of the amplifier and the two

other side terminals to the Testers setted at 200mV range.

•Set the Variac at 0V and connect its output to the mains cable of the amplifier.

Verifying:

•Switch on the amplifier, then slowly rise the Variac voltage till 230V and check the

value on the Testers is the most low as possible (few mV). If not check the correct

mounting of MJ21193/MJ21194 transistors.

•In same time the relays are activated and the protect red led turns off.

•Set the amplifier in parallel mode.

•Set the Function Generator on 1KHz sinewave at 0.2V RMS and check on the

Oscilloscope monitor the output signals have the same amplitude and phase.

•Then rise the Function Generator amplitude till 1V RMS and check on the

Oscilloscope monitor the output signal is not squared.

•Set the amplifier in bridge mode.

•Set the Function Generator on 1KHz sinewave at 0.2V RMS and check on the

Oscilloscope monitor the output signals have the same amplitude and opposite

phase.

•Then rise the Function Generator amplitude till 1V RMS and check on the

Oscilloscope monitor the output signal is not squared.

PRL500 -900 -1300 B i a s C a l i b r a t i o n

Required Test Equipment:

•Function Generator

•20 Mhz Dual-channel Oscilloscope

•Power Load Bank (4Ω-350W min.)

•Variac (0V ac –230V ac, 15A)

Test Procedure

Connections:

•Connect the Function Generator output on CH1 input Jack or XLR socket.

•Connect the Power Load Bank with Speakon on the output sockets.

•Connect the Dual-channel Oscilloscope on Binding Post outputs.

•Set the Variac at 0V and connect its output to the mains cable of the amplifier.

Verifying:

•Switch on the amplifier, then rise the Variac voltage till 230V. In same time the

relays are activated and the protect red led turns off.

•Set the amplifier in parallel mode.

•Set the Function Generator on 1KHz sinewave at 0.2V RMS and check on the

Oscilloscope monitor the output signals have the same amplitude and phase.

•Verify that on the sinewave there is not the “crossover distortion”. (*)

Only if the “crossover distortion” is present adjust the trimmer VR1for CH1, VR2

for CH2.

(*)

sinewave without sinewave with

“crossover distortion” “crossover distortion”

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4321

ATitle

Number RevisionSize

Date: 23-May-2001 Sheet of

File: A:\PRL1300-900-500.ddb Drawn By:

IC1-A

TL072

IC2-A

TL072

C16

100N

C17

100N

C18

100N

C15

100N

+15VB+15VA

-15VA -15VB

NCNC

NC NC

IC1-B

TL072

100N C4

100N C6

100N

IC2-B

TL072

100N

C10

100N

C12

47U 25V

C11

47U 25V

C13

47U 25V

C14

47U 25V

+15VB

-15VB

-15VA

+15VA

CN2

CN3

CN4

CN5

CN6

1 2

3 4

5 6

7 8

9 10

11 12

13 14

CN1

IN_LOW

OUT_LOW

OUT_HIGH

IN_HIGH

SW1

9K09 1%

22E

9K09 1%

R10

22E

9K09 1%

R11

22E

R12

22E

9K09 1% R6

18K 1% R8

9K09 1% R7

18K 1%

CROSSOVER PRL 1300/900/500

PROEL S.p.A.

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ATitle

Number RevisionSize

Date: 23-May-2001 Sheet of

File: A:\PRL1300-900-500.ddb Drawn By:

100N

+12V

100K

R11

330R

100K

220K

5K6

VR1

22K

10K

R12

10K

LED CONTROL PRL 1300/900/500

CN1

DL1

4 11

IC1-A

LM324

IC1-B

LM324 10

IC1-C

LM324

+12V

R10

100K

R14

330R

100K

220K

5K6

VR2

22K

10K

R13

10K

13 14

IC1-D

LM324

LEFT

RIGHT

CLIP

SIGNAL

CLIP

SIGNAL

+12V

PROT

DL3

DL2

PROEL S.p.A.

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ATitle

Number RevisionSize

Date: 23-May-2001 Sheet of

File: A:\PRL1300-900-500.ddb Drawn By:

POWER SUPPLY PRL 500

KBPC036-06

47N 250V

5A T

+VA

-VA

CN1

C25

10000U 100V

C18

10000U 100V

KBPC036-06

C16

47N 250V

5A T

+VB

-VB

CN3

C19

10000U 100V

C28

10000U 100V

CN7

D8 1N4007

D9 1N4007

CN2

W02M

C12

2200U

C15

47U

C11

47U

C13

47N

C14

47N

C10

47N

Vin

GND

+12V 3

IC2

MC7812

Vin

GND 1

-12V 3

IC1

MC7912

+12V

-12V

CN4

R18

22K

R15

330E

R17

4K7

47K

R14

10K

R10

100K

220K

33K

R11

10K

33K

47K

C22

47U

C21

100U

1N4007 D4

1N4007

1N4148

5V1 0.5W

TR5

BC327

TR1

BC327

TR2

BC337

TR4

BC337

TR3

BC337

RL2

RL1

+12V

CN6

-12V

10E 2W R6

10E 2W

R16

5E6 2W

R13

10E 2W R12

10E 2W

5E6 2W

C24

100N 100V

C23

100N 100V

100uH

+12V

OUT_R

OUT_L

GND_R

GND_L

PROEL S.p.A.

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ATitle

Number RevisionSize

Date: 23-May-2001 Sheet of

File: A:\PRL1300-900-500.ddb Drawn By:

POWER SUPPLY PRL 900

KBPC036-06

47N 250V

8A T

+VA

-VA

CN1 C26

4700U 100V

C25

4700U 100V

C18

4700U 100V

C17

4700U 100V

KBPC036-06

C16

47N 250V

8A T

+VB

-VB

CN3 C19

4700U 100V

C20

4700U 100V

C27

4700U 100V

C28

4700U 100V

CN7

D8 1N4007

D9 1N4007

CN2

W02M

C12

2200U

C15

47U

C11

47U

C13

47N

C14

47N

C10

47N

Vin

GND

+12V 3

IC2

MC7812

Vin

GND 1

-12V 3

IC1

MC7912

+12V

-12V

CN4

R18

22K

R15

330E

R17

4K7

47K

R14

10K

R10

100K

220K

33K

R11

10K

33K

47K

C22

47U

C21

100U

1N4007 D4

1N4007

1N4148

5V1 0.5W

TR5

BC327

TR1

BC327

TR2

BC337

TR4

BC337

TR3

BC337

RL2

RL1

+12V

CN6

-12V

10E 2W R6

10E 2W

R16

5E6 2W

R13

10E 2W R12

10E 2W

5E6 2W

C24

100N 100V

C23

100N 100V

100uH

+12V

OUT_R

OUT_L

GND_R

GND_L

PROEL S.p.A.

1234

4321

ATitle

Number RevisionSize

Date: 23-May-2001 Sheet of

File: A:\PRL1300-900-500.ddb Drawn By:

POWER SUPPLY PRL 1300

KBPC036-06

47N 250V

8A T

+95A

-95A

CN1 C26

6800U 100V

C25

6800U 100V

C18

6800U 100V

C17

6800U 100V

KBPC036-06

C16

47N 250V

8A T

+95B

-95B

CN3 C19

6800U 100V

C20

6800U 100V

C27

6800U 100V

C28

6800U 100V

CN7

D8 1N4007

D9 1N4007

CN2

W02M

C12

2200U

C15

47U

C11

47U

C13

47N

C14

47N

C10

47N

Vin

GND

+12V 3

IC2

MC7812

Vin

GND 1

-12V 3

IC1

MC7912

+12V

-12V

CN4

R18

22K

R15

330E

R17

4K7

47K

R14

10K

R10

100K

220K

33K

R11

10K

33K

47K

C22

47U

C21

100U

1N4007 D4

1N4007

1N4148

5V1 0.5W

TR5

BC327

TR1

BC327

TR2

BC337

TR4

BC337

TR3

BC337

RL2

RL1

+12V

CN6

-12V

10E 2W R6

10E 2W

R16

5E6 2W

R13

10E 2W R12

10E 2W

5E6 2W

C24

100N 100V

C23

100N 100V

100uH

+12V

OUT_R

OUT_L

GND_R

GND_L

PROEL S.p.A.

1 2 3 4 5 6

654321

Title

Number RevisionSize

Date: 23-May-2001 Sheet of

File: A:\PRL1300-900-500.ddb Drawn By:

TR25

MJ21193

TR26

MJ21193

TR18

MJ21193 TR17

MJ21193

TR34

MJE15031

TR31

MJ21194

TR32

MJ21194

TR23

MJ21194

TR24

MJ21194

TR33

MJE15030

0.47E 3W

R58

22E 1W

R63

1K2 5W

R64

1K2 5W

R38

10E 2W

R26

0.47E 3W

R30

0.47E 3W

R27

0.47E 3W

R29

0.47E 3W

R34

22E 1W

R41

10E 2W

3N3

1N5

C29

27P

2N2

33N

1N4007

D12

1N4007

D14

1N4007

D19

1N4007

1N5403

D17

1N4007

1N5403

D15

1N4007

R40

47E

VR1

100E

R51

R39

R95

100E

R86

22K 1/2W

D13

3V9 1W

D18

4V7 1W

VR3

2K2

R35 NTC 50R

°C

R62

680E 5W

R77

75K 1%

C40

120N

R79

820E

R83

100E

D32

W02G

IC3-B

NE5532 3

8 4

IC3-A

NE5532

C30

47P

R76

10K

R75

10K

R78

6K8

JS6

D31

15V 1W

D25

15V 1W

C15

220U 25V

C28

220U 25V

C31

100N

C36

100N

-15VA

+15VA

-15VA -VA

+VA

OUT_L

TR2

MJ21193

TR1

MJ21193

TR10

MJ21193

TR9

MJ21193

TR36

MJE15031

TR8

MJ21194

TR7

MJ21194

TR16

MJ21194

TR15

MJ21194

TR35

MJE15030

R25

0.47E 3W

R31

0.47E 3W

R33

22E 1W

R70

1K2 5W

R72

1K2 5W

R28

0.47E 3W

R42

10E 2W

0.47E 3W

R32

0.47E 3W

R37

22E 1W

R45

10E 2W

3N3

C12

1N5

C17

27P

2N2

33N

D10

1N4007

D30

1N4007

1N5403

D29

1N4007

D11

1N4007

1N5403

D23

1N4007

R44

47E

VR2

100E

R47

R43

R93

100E

R53

22K 1/2W

3V9 1W

D22

4V7 1W

VR4

2K2

R36 NTC 50R

°C

R71

680E 5W

R52

75K 1%

C15

120N

R56

820E

R54

100E

D24

W02G

IC2-B

NE5532

8 4

IC2-A

NE5532

C23

47P

R60

10K

R59

10K

R65

6K8

JS3

D21

15V 1W

D20

15V 1W

C10

220U 25V

C11

220U 25V

C21

100N

C22

100N

-15VB

+15VB

-15VB -VB

+VB

OUT_R

IC4-B

TL072

8 4

IC4-A

TL072

C33

4U7 25V

C34

47P

DL3

3 2

R82

2K2

R80

27K

CN4

R90

10K

R85

R89

10K

R88

10K

R84

10K

C35

47P

C39 47P

D34

15V 1W

D35

15V 1W

D36

15V 1W

D33

15V 1W

CN7

1 2

3 4

5 6

7 8

910

11 12

13 14

CN3

C42

100N

C38

100N

C41

47U 25V

C37

47U 25V

R91

22E

R87

22E

-15VA

+15VA

IC1-B

TL072

8 4

IC1-A

TL072

C19

4U7 25V

C13

47P

DL1

3 2

R50

2K2

R48

27K

CN1

R69

10K

R57

R68

10K

R67

10K

R55

10K C14

47P

C26 47P

D27

15V 1W

D15

15V 1W

D25

15V 1W

D26

15V 1W

CN2

C27

100N

C25

100N

C24

47U 25V

C20

47U 25V

R66

22E

R61

22E

-15VB

+15VB

JS1 JS4

JS2

JS5

R46

10E

R74

33K

R73

33K

+15VB

-15VB

+15VA

-15VA

GND

IN_A+

IN_A-

PARALLEL

SW1

STEREO

IN_B-

IN_B+

GND

POT A

DL4

POT B

DL2

C32

47U 25V

GND

STEREO POWER AMP. PRL 500

C18

47U 25V

BRIDGE

SW2

PROEL S.p.A.

1 2 3 4 5 6

654321

Title

Number RevisionSize

Date: 23-May-2001 Sheet of

File: A:\PRL1300-900-500.ddb Drawn By:

TR25

MJ21193

TR26

MJ21193

TR18

MJ21193 TR17

MJ21193

TR34

MJE15031

TR31

MJ21194

TR32

MJ21194

TR23

MJ21194

TR24

MJ21194

TR33

MJE15030

0.47E 3W

R58

22E 1W

R63

1K5 7W

R64

1K5 7W

R38

10E 2W

R26

0.47E 3W

R30

0.47E 3W

R27

0.47E 3W

R29

0.47E 3W

R34

22E 1W

R41

10E 2W

3N3

1N5

C29

27P

2N2

33N

1N4007

D12

1N4007

D14

1N4007

D19

1N4007

1N5403

D17

1N4007

1N5403

D15

1N4007

R40

47E

VR1

100E

R51

R39

R95

100E

R86

22K 1/2W

D13

3V9 1W

D18

4V7 1W

VR3

2K2

R35 NTC 50R

°C

R62

680E 5W

R77

75K 1%

C40

120N

R79

560E

R83

100E

D32

W02G

IC3-B

NE5532 3

8 4

IC3-A

NE5532

C30

47P

R76

10K

R75

10K

R78

6K8

JS6

D31

15V 1W

D25

15V 1W

C15

220U 25V

C28

220U 25V

C31

100N

C36

100N

-15VA

+15VA

-15VA -VA

+VA

OUT_L

TR4

MJ21193

TR2

MJ21193

TR1

MJ21193

TR12

MJ21193

TR10

MJ21193

TR9

MJ21193

TR36

MJE15031

TR8

MJ21194

TR7

MJ21194

TR5

MJ21194

TR16

MJ21194

TR15

MJ21194

TR13

MJ21194

TR35

MJE15030

R15

0.47E 3W

R25

0.47E 3W

R31

0.47E 3W

R33

22E 1W

R70

1K5 7W

R72

1K5 7W

R28

0.47E 3W

R42

10E 2W

0.47E 3W

R19

0.47E 3W

R32

0.47E 3W

R20

0.47E 3W

R16

0.47E 3W

R37

22E 1W

R45

10E 2W

3N3

C12

1N5

C17

27P

2N2

33N

D10

1N4007

D30

1N4007

1N5403

D29

1N4007

D11

1N4007

1N5403

D23

1N4007

R44

47E

VR2

100E

R47

R43

R93

100E

R53

22K 1/2W

3V9 1W

D22

4V7 1W

VR4

2K2

R36 NTC 50R

°C

R71

680E 5W

R52

75K 1%

C15

120N

R56

560E

R54

100E

D24

W02G

IC2-B

NE5532

8 4

IC2-A

NE5532

C23

47P

R60

10K

R59

10K

R65

6K8

JS3

D21

15V 1W

D20

15V 1W

C10

220U 25V

C11

220U 25V

C21

100N

C22

100N

-15VB

+15VB

-15VB -VB

+VB

OUT_R

IC4-B

TL072

8 4

IC4-A

TL072

C33

4U7 25V

C34

47P

DL3

3 2

R82

2K2

R80

27K

CN4

R90

10K

R85

R89

10K

R88

10K

R84

10K

C35

47P

C39 47P

D34

15V 1W

D35

15V 1W

D36

15V 1W

D33

15V 1W

CN7

1 2

3 4

5 6

7 8

910

11 12

13 14

CN3

C42

100N

C38

100N

C41

47U 25V

C37

47U 25V

R91

22E

R87

22E

-15VA

+15VA

IC1-B

TL072

8 4

IC1-A

TL072

C19

4U7 25V

C13

47P

DL1

3 2

R50

2K2

R48

27K

CN1

R69

10K

R57

R68

10K

R67

10K

R55

10K C14

47P

C26 47P

D27

15V 1W

D15

15V 1W

D25

15V 1W

D26

15V 1W

CN2

C27

100N

C25

100N

C24

47U 25V

C20

47U 25V

R66

22E

R61

22E

-15VB

+15VB

JS1 JS4

JS2

JS5

R46

10E

R74

33K

R73

33K

+15VB

-15VB

+15VA

-15VA

GND

IN_A+

IN_A-

PARALLEL

SW1

STEREO

IN_B-

IN_B+

GND

POT A

DL4

POT B

DL2

C32

47U 25V

GND

STEREO POWER AMP. PRL 900

C18

47U 25V

BRIDGE

SW2

TR28

MJ21193

R14

0.47E 3W

TR20

MJ21193

R13

0.47E 3W

TR21

MJ21194

R17

0.47E 3W

TR29

MJ21194

R18

0.47E 3W

PROEL S.p.A.

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