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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.
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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:
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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
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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
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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
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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
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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