Text preview for : crest audio LA series.pdf part of Crest LA series pwr amp LA series pwr amp



Back to : crest audio LA series.pdf | Home

Schematic set LA Series power amplifiers
1. LA 601 / 901 / 1201 Preamp 2. LA 601 Power supply 3. LA 901 / 1201 Power supply 4. LA 601 Output stage 5. LA 901 Output stage 6. LA 1201 Output stage

Note: The images in this schematic set are formatted for printing on 11" X 17" tabloid size paper. The schematic set can be printed on 8.5" X 11" paper by using the "Shrink to fit" option in Adobe Acrobat reader, however some of the details will be very small.

8

7

6

5

4

3

2

1

R7 Z1 1N5933 (22V) R24 C1 0.1/100V R23 1 2 3 4 5 6 7 8 J3 CH A OCTAL 10K/1% D3 1N4148 R22 10K/1% D7 1N4148 R3 NOTE 1 J1 CH A 0.1/100V 1 2 3 4 5 6 BAR1 INPUT BARRIER Z3 1N5359 R21 NOTE 2: C3 30pF Z2 1N5933 (22V) VR1 5K R12 6.65K/1% C15 100/100V R6 100K C12 1/63V C14 10/16V/BP C16 100/100V 0.1/100V C18 R20 4.7/1W R9 470 C19 330pF R15 100 3 4 9 6 RLY2 T90N5D12-12 SUPPLY GND SUPPLY GND C23 150pF C21 330pF C6 R26 1 2 3 4 5 6 7 8 J4 CH B OCTAL R4 NOTE 1 R28 NOTE 2 10K/1% D4 1N4148 D6 1N4148 6 5 R25 NOTE 2 30pF 1 R32 100 J10 1 2 3 4 LIMITER 8 D5 1N4148 4 D1 1N4148 NOTE 2 C22 330pF 13 12 30pF 15 10 C24 150pF R10 470 NOTE 4

D

C5

R17

100

+

C20 330pF

1 + 3 IC1A OPA2604

R2 90.9K/1% C8 0.1/100V

11

C2

C

D8 1N4148

B

R27 SW1 MSSA2350 10K/1%

7 + IC1B OPA2604

8 7 5

C4 30pF

J2 CH B

NOTE 1:

LA601 = 13.3K/1% LA901 = 12.7K/1% LA1201 = 12.4K/1% LA601 = 30.1K/1% LA901 = 36.5K/1% LA1201 = 40.2K/1%

NOTE 3:

LA601 = 680/10W LA901 = 820/10W LA1201 = 1K/10W LA601 = 1.5K/2W LA901 = 2.7K/2W LA1201 = 3.3K/2W

NOTE 2:
A

NOTE 4:

8

7

6

-

2

14 IC2B STK3152

1 2 3 4 5 6 7 8 0C1 R31 100 J8 CH A MODULE CH A OUT

D

C10 R8

15pF

R18

100 VTL5C6 CH A MODULE R14 100K/1W/2% R19 4.7/1W C17 0.1/100V RLY1 T90N5D12-12 J9 1 2 RELAY CH B OUT
C

NOTE 4

CH B MODULE

D2 1N4148

+

0C2

2 IC2A STK3152

B

J7 CH B MODULE VTL5C6 1 2 3 4 5 6 7 8 1 2 3 4 5 6 BAR2 OUTPUT BARRIER

VR2 5K R1 90.9K/1% C7 0.1/100V

C9 15pF R11 6.65K/1% R16 100

R13

100K/1W/2%

R29 NOTE 3

R30 NOTE 3

R5 100K

C13 1/63V

C11 10/16V/BP

CREST AUDIO INC. 150 Florence Avenue Hawthorne, NJ 07506 Title PREAMP/DRIVER FOR LA SERIES Size B Date:
5 4 3

A

Document Number 21B1113-04 Tuesday, May 16, 2000
2

Rev Sheet 1
1

of

1

8

7

6

5

4

3

2

1

R36 100/2W D10 R10 2.2K C10 10/50V R47 1.2K Z8 1N5353 3 1N4148 D9 1N4004 2 J5 IC3B LM393N 7 + D11 1N4148 19.8K/1% R45 3 1K Z5 1N960 R38 R40 1K/1% R41 1K/1% 2 8 IC3A D12 + LM393N 4 R39 19.8K/1% 1 1N4148 R42 100K R43 2.2K Q5 MPSA13 IC2 LM317T R37 442/1% Z6 1N960 C11 0.1/100V 1 2 FAN + FAN GND 1 R19 2.2K

R46 1.2K
D

D

5 6

R44 1K

26-48-1025

TO CH.A MODULE SPKR LEVEL A (DC PROTECT) A CLIPGROUND TEMP SENSOR OUTPUT TEMP SENSOR POWER 5 4 3 2 1 B CH. POWER+ B CH. PROTECT+ GROUND B CLIPA CH. POWER+ A CH. PROTECT+ GROUND A CLIP-

J4 22-15-4087 1 2 3 4 5 6 7 8

TO CH.B MODULE 1 2 3 4 5 J2 26-48-1055
C

TEMP SENSOR POWER TEMP SENSOR OUTPUT GROUND B CLIPSPKR LEVEL B (DC PROTECT)

J1 26-48-1055
C

R31 1K/1W R33 1K R34 1K

R32 1K/1W

J3 26-48-1025 1 2 RELAY A RELAY B

R35 180/5W R1 1.5K/1W D1 1N4148 R3 200/2W R5 1K/1W R7 4.7K/2W Z1 1N5353B R25 4.7K/2W R26 1K/1W R28 200/2W D6 1N4148 R30 1.5K/1W

R16 2.2K

Z2 1N5353B

R4 5.6K CH. A 2N5401 IC1D LM614 16 + 14 15 R2 10K Z4 1N5920 R8 10K Q1 2N5551 Q2 R9 15K 10 13 8 TR1 MAC97 D2 1N4004 + 12 5 + D3 1N4148 IC1C LM614 11 IC1E LM614 9 CH. B IC1B LM614 6 7 R23 15K MAC97 TR2 R11 330K C6 470/25V R15 1K/1% R18 1K/1% R20 1K R22 330K C7 470/25V R24 10K C8 470/25V D4 1N4148

R27 5.6K

R12 1K

3 Q3 2N5551 2

4 + 13

R14 499/1%

R17 499/1%

R21 1K

Q4 2N5401

R29 10K

IC1A LM614 1

B

B

C5 470/25V

R13 1K

Z7 1N5920

D5 1N4004

D7 R6 50/10W C4 220/80V D8

1N4004

1N4004

0.15/400V C1

+ + BR1 BR354W GND GND GND C3 10,000/67V GND -

C2 10,000/67V

SW1 12A

P1 PLUG AC MALE CHASSIS COMPONENTS
A

-

F1 T1 120 VOLT VERSION 3A/MINI BR2 RS202 CREST AUDIO INC. 150 Florence Ave. Hawthorne NJ 07506 Title LA601 POWER SUPPLY PCB SCHEMATIC Size C Date:
8 7 6 5 4 3 2

A

C9 1000/25V

Document Number 21C1101 Thursday, May 18, 2000 Sheet
1

Rev 04 1 of 1

8

7

6

5

4

3

2

1

R25 100/2W IC2 LM317
D

Z3 1N5355A

C17 10/50V

2

3 R43 1.5K/1W

1 2 3 4 5 6 7 J2 26-48-1075

TEMP SENSOR POWER TEMP SENSOR OUTPUT GROUND A CLIPA CLIP+ SPKR LEVEL A (DC PROT) GROUND

D

D8 D5 1N4148 Q5 MPSA13

1

R26 442/1% 2 1 J4 26-48-1025 J1 8 7 6 5 4 3 2 1 R44 1.5K/1W CH. A Z1 1N960 R21 2.2K 1 2 3 4 5 6 7 J3 26-48-1075 1 2 R40 1.5K R42 1.5K J5 26-48-1025

RELAY B RELAY A

1N4148

IC1B LM614 7 + 5 6

R28 1K

R29 1K

IC1A LM614 1

4

3 2

D6

+ 13

R27 100K D7 1N4004 R34 2.2K

1N4148

CH. B

R32 19.6K/1%

R30 1K/1%

R31 1K/1%

R33 19.6K/1%

A A A A B B B B

CLIPCLIP+ CH. PROTECT+ CH. POWER+ CLIPCLIP+ CH. PROTECT+ CH. POWER+

CH. A

22-02-2085

CH. B

Z2 1N960

R22 2.2K

TEMP SENSOR POWER TEMP SENSOR OUTPUT GROUND B CLIPB CLIP+ SPKR LEVEL B (DC PROT) GROUND

R41
C

1.5K R39 1.5K R37 47/1W 2N5401 Q3 R35 2.2K D1 2N5551 11 12 IC1E LM614 R13 8 R23 5K/5W TR1 MAC97 R17 22K C14 470/25V 13 330K R9 10K R7 750/1% R8 750/1% R10 10K R14 R24 330K C15 470/25V R18 22K MAC97 TR2 C19 470/25V Z4 1N5920 5K/5W Q1 1N4148 R15 10K 10 IC1C LM614 1N4148 R1 10K CH. B R4 2.2K CH. A D10 15 14 1N4148 Q2 2N5551 16 + IC1D LM614 R16 10K 1N4148 R2 10K

FAN DRIVE V+ GROUND

C

R38 Q4 2N5401 47/1W

D3

R12 1K

R5 499/1% 9

R6 499/1%

R11 1K

R36 2.2K

D4

Z5 1N5920

C18 470/25V

B

LA901 = 12 A. LA1201 = 15 A. SW1 12/15A BR1 BR354W C2 NOTE 1 C3 NOTE 1 C6 NOTE 1

P1 PLUG AC MALE

T1 120 VOLT VERSION 3A/MINI BR2 RS202

A

8

7

+
6

B

0.15/400V C1

+ +

GND GND GND

C4 NOTE 1

C5 NOTE 1

C7 NOTE 1

GND

F1 C11 1000/25V

NOTE 1
A

C2 - C5 ARE 7,300uF/80V ON MODEL LA901. C6, C7 ARE NOT USED. C2 - C7 ARE 6,800uF/90V ON MODEL LA1201.

CREST AUDIO INC. 150 Florence Ave. Hawthorne, NJ 07506 Title LA901/1201 POWER SUPPLY/FAN DRIVER PCB Size C Date:
5 4 3 2

Document Number 21C1127 Tuesday, May 16, 2000 Sheet
1

Rev 1 of 1

8

7

6

5

4

3

2

1

D1 Z1 1N4735A

1N4004

R46 R47 10K

R1 NOT USED R3 470 C9 10n/50V +65VNL
D

D

Z2 1N4749A

20K C7 1n/50V Q1 2N5551

D3 1N4148

Q4 2SC2336 R8 10/1W

C1 100/6.3V D9 1N4148 C2 0.1/100V

Q6 2SC3281 R12 2.2/1W

Q8 2SC3281 R19 2.2/1W

Q10 2SC3281

D5 FR204

C3 0.1/100V

C

+ 65 VNL + DRIVE + DRIVE SPEAKER RAIL SPEAKER RAIL - DRIVE - DRIVE - 65 VNL

8 7 6 5 4 3 2 1 J1 INPUT

R5 1.2K

R10 150/1W

R15 4.7/2W

R17 0.33/5W

R21 0.33/5W L1 R100 2uH OUT 1/2W R28 2.2/2W
C

Q3 TIP110 R6 390

R7 100/1W

R11 150/1W

R14 51/2W

R16 4.7/2W

R18 0.33/5W

R22 0.33/5W R37

R41 100/1%

R25 100K

D8 1N4004 R26

D10 1N4148

R13 VR1 PTC15LB/250 R9 10/1W D4 1N4148 Q2 2N5401 Q5 2SA1006 2.2/1W Q7 2SA1302

R20 2.2/1W Q9 2SA1302

255/1% R23 100K Q11 2SA1302 R39 100K R35 15K

Q19 2N5401

220 C5 Q13 2N5551 0.047/630V GROUND

Q12 2N5551

D6 FR204 R24 15K Q17 2N5551

C4 0.1/100V

Z3 1N4749A
B

1n/50V C6 R48 20K R49 10K R2

10n/50V C8 R4 470

-65VNL
B

Z4 1N4735A D2

NOT USED

1N4004

TEMP SENSOR POWER TEMP SENSOR OUTPUT TEMP SENSOR GROUND CLIP (-) SPEAKER RAIL

1 2 3 4 5 HEADER 5 4/14/92 R37 changed from 274/1% to 255/1%

A

2

JP?

1

IC2 LM35DP

3

R29 1K

CREST AUDIO INC. 150 Florence Ave. Hawthorne, NJ 07506 Title LA601 OUTPUT STAGE Size B Date:
8 7 6 5 4 3

A

Document Number 21B1157 Thursday, May 18, 2000
2

Rev 01 Sheet 1
1

of

1

8

7

6

5

4

3

2

1

D

D

D1

1N4004

R65 Z1 1N5925A R66 Z2 1N5941A 20K C9 0.001/50V Q28 2N5551 16K

R61 NOT USED R63 470 C11 0.01/50V R45 D7 1N4148 Q2 2SC2336BQ R6 10/1W Q4 2SC3281 R11 2.2/1W R15 2.2/1W R17 2.2/1W Q6 2SC3281 Q10 2SC3281 Q12 2SC3281 R23 2.2/1W Q18 2SC3281 R39 100K R41 150/1% Q26 2N5401 Q20 2N5551 R43 100/1% R53 270K R55 D3 1N4004 220 L1 2uH R59 1/5W 7 8 5 R3 100/1W IC1 LA2500 R5 150/1W R8 51/2W R10 30/2W R26 0.33/5W R30 0.33/5W R32 0.33/5W R38 0.33/5W R42 R16 2.2/1W Q7 2SA1302 R18 2.2/1W Q11 2SA1302 R24 2.2/1W Q13 2SA1302 150/1% R40 2.2/1W R7 10/1W D8 1N4148 Q3 2SA1006BQ Q5 2SA1302 Q19 2SA1302 R48 100K R46 15K Q23 2N5551 R50 15K 100K R44 100/1% Q21 2N5401 D4 1N4004 R54 Q27 2N5551 Q25 2N5551 D6 FR204 C6 0.1/100V 220 C5 0.047/630V R60 2/5W OUT GROUND
C

+ 75 V. Q22 2N5401 R49 15K R47 100K Q24 2N5401 D5 FR204 C7 0.1/100V

15K

C1 100/6.3V
C

C2 0.1/100V

8 7 6 5 4 3 2 1 J1 INPUT

Q1 2SC3068 R2 620

2 9

3 4 1

D9 1N4148

R1 680 6

R4 150/1W

R9 30/2W

R25 0.33/5W

R29 0.33/5W

R31 0.33/5W

R37 0.33/5W

D10 1N4148 VR1 PTC15LB/100

R12

Q29 2N5401 C8 0.001/50V R67 Z3 1N5941A
B

C10 0.01/50V R64 470 R68 R62

- 75 V.

20K

B

Z4 1N5925A

16K

NOT USED

D2

1N4004

J2 TEMP SENSOR POWER TEMP SENSOR OUT POWER SUPPLY GROUND CLIP CLIP + OUTPUT SIGNAL POWER SUPPLY GROUND 1 2 3 4 5 6 7 TEMP/CLIP

1

IC2 LM35DP

3

A

2

R56 1K

A

CREST AUDIO INC. 150 Florence Ave. Hawthorne, NJ 07506 Title LA901 OUTPUT STAGE Size C Date:
8 7 6 5 4 3 2

Document Number 21C1240 Tuesday, May 16, 2000 Sheet
1

Rev 1 1 of 1

8

7

6

5

4

3

2

1

D

D

D1

1N4004

R65 Z1 1N5925A R66 Z2 1N5941A 18K C9 0.001/50V 22K

R61 NOT USED R63 470 C11 0.01/50V R45 Q2 2SC2336BQ R6 10/1W Q4 2SC3281 R11 C2 0.1uF/100V 2.2/1W R15 2.2/1W R17 2.2/1W Q6 2SC3281 Q10 2SC3281 Q12 2SC3281 R19 2.2/1W Q16 2SC3281 R23 2.2/1W Q18 2SC3281 R39 100K R41 100/1% Q26 2N5401 Q20 2N5551 R43 100/1% R53 270K R55 D3 1N4004 220 L1 2uH R59 1/5W 7 8 5 R3 100/1W IC1 LA2500 R5 150/1W R8 51/2W R10 30/2W R26 0.33/5W R30 0.33/5W R32 0.33/5W R34 0.33/5W R36 0.33/5W R38 0.33/5W R42 R16 2.2/1W Q7 2SA1302 R18 2.2/1W Q11 2SA1302 R20 2.2/1W Q13 2SA1302 R22 2.2/1W Q15 2SA1302 R24 2.2/1W Q17 2SA1302 100/1% R40 2.2/1W R7 10/1W D8 1N4148 Q3 2SA1006BQ Q5 2SA1302 Q19 2SA1302 R48 100K R46 15K Q23 2N5551 R50 15K 100K R44 100/1% Q21 2N5401 D4 1N4004 R54 Q27 2N5551 Q25 2N5551 D6 FR204 C6 0.1/100V 220 C5 0.047/630V R60 2/5W OUT GROUND
C

+ 85 V. Q22 2N5401 R49 15K R47 100K Q14 2SC3281 R21 2.2/1W Q24 2N5401 D5 FR204 C7 0.1/100V

Q28 2N5551

D7 1N4148

15K

C1 100uF/6.3V

C

8 7 6 5 4 3 2 1 J1 INPUT

D9 1N4148

R1 680 Q1 2SC3068 R2 620 2 9 3 4 1 6

R4 150/1W

R9 30/2W

R25 0.33/5W

R29 0.33/5W

R31 0.33/5W

R33 0.33/5W

R35 0.33/5W

R37 0.33/5W

D10 1N4148 R12 VR1 PTC15LB/100

Q29 2N5401 C8 0.001/50 R67 Z3 1N5941A
B

C10 0.01/50V R64 470 R68 R62

- 85 V.

18K

B

Z4 1N5925A

22K

NOT USED

D2

1N4004

3

J2 1 2 3 4 5 6 7 CLIP/TEMP

1

IC2 LM35DP

A

2

R56 1K

A

CREST AUDIO INC. 150 Florence Ave. Hawthorne, NJ 07506 Title LA1201 Size C Date:
8 7 6 5 4 3 2

Document Number 21C1159 Thursday, May 18, 2000 Sheet
1

Rev 1 1 of 1