background image

1

2

3

4

5

6

A

B

C

D

6

5

4

3

2

1

D

C

B

A

R105

1K

R104

10K

2

3

1

4

SW100A

R119

1K

R100

10K

C100

CC22P

R103

10K

R101

10K

R115

6K8

C102

CL473

R116

6K8

C103

CL823

R102

10K

3

2

1

U100A

4558

3

2

1

U101A

4558

3

2

1

U102A

4558

1

3

2

VR100A

A50K

4

6

5

VR100B

A50K

LPF

FLAT

HPF

-15VA

+15VA

C108

CC22P

CH1

R125
62K

R112

1K

6

7

5

8

SW100B

R120

1K

R107

10K

C101

CC22P

R110

10K

R108 10K

R117

6K8

C104

CL473

R118

6K8

C105

CL823

R109

10K

5

6

7

8

4

U100B

4558

5

6

7

8

4

U101B

4558

5

6

7

8

4

U102B

4558

7

9

8

VR100C

A50K

10

12

11

VR100D

A50K

LPF

FLAT

HPF

-15VA

+15VA

C109

CC22P

CH2

R114
62K

R113

10K

-15VA

+15VA

-15VA

+15VA

R105A

1K

R104A

10K

2

3

1

4

SW100AA

R119A

1K

R100A

10K

C100A

CC22P

R103A

10K

R101A

10K

R115A

6K8

C102A

CL473

R116A

6K8

C103A

CL823

R102A

10K

3

2

1

U100AA

4558

3

2

1

U101AA

4558

3

2

1

U102AA

4558

1

3

2

VR100AA

A50K

4

6

5

VR100AB

A50K

LPF

FLAT

HPF

-15VA

+15VA

C108A

CC22P

CH3

R106A

62K

R112A

1K

6

7

5

8

SW100AB

R120A

1K

R107A

10K

C101A

CC22P

R110A

10K

R108A 10K

R117A

6K8

C104A

CL473

R118A

6K8

C105A

CL823

R109A

10K

5

6

7

8

4

U100AB

4558

5

6

7

8

4

U101AB

4558

5

6

7

8

4

U102AB

4558

7

9

8

VR100AC

A50K

10

12

11

VR100AD

A50K

LPF

FLAT

HPF

-15VA

+15VA

C109A

CC22P

CH4

R114A

62K

R113A

10K

-15VA

+15VA

CH2SG

CH1SG

CH3SG

CH4SG

C110

CC104

C111

CC104

C112

CC104

C113

CC104

C110A

CC104

C111A

CC104

C112A

CC104

C113A

CC104

R121

4R70.5W

R122
4R70.5W

C115

CC104

C114

CC104

C120

47U/16V

C118

47U/16V

C116

CC104

1

1

2

2

C121

47U/16V

C123

47U/16V

C128

CC104

C126

CC104

C125

CC104

C119

47U/16V

C117

47U/16V

C122

47U/16V

C124

47U/16V

C127

CC104

C129

CC104

-15VA

+15VA

-15VA

+15VA

+V1

-V1

1SG

2SG

3SG

4SG

DW GNO:
PART NO:

PART NAME:

PRODUCT MODE:

SCALE:       1:1
UNIT:          MM
SIZE:           A4
REV:            LPP

DRAWN BY: 
CHECKED BY:
APPROVED BY:

DATA:
DATA:
DATA:

SING

infinity REF-475

ECN NO

DESCRIPTON

DATA

APPROVED

TAN.SHI.CHUAN

2007.01.06

-

6

+

5

7

U103B

NJM4558

-

2

+

3

1

U103A

NJM4558

-

6

+

5

7

U104B

NJM4558

C106

124

C107

563

R127

30K

+15VA

-15VA

-

2

+

3

1

U104A

NJM4558

C131

124

C130

563

R128

30K

R135

2K

R136

2K

R137

2K

R138

2K

Q101

8050

Q100

8050

Q102

8050

Q103

8050

R130

10K

R131
10K

R132
10K

R133
10K

RT100

65

ć

+VCC

C132

10U

R134

8K2

1

3

2

VR102A

C500K

4

6

5

VR102B

C500K

-15VA

+15VA

RJ45GND

RJ45REM

DIAGNOSTIC

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

CON100

CON10*2

1SG
2SG

3SG
4SG

C136

124

C135

563

C133

124

C134

563

4

6

5

VR101B

C500K

1

3

2

VR101A

C500K

R124

30K

R106

30K

R111

100K

-V1

 475a Reference Series 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

25

Summary of Contents for 475a

Page 1: ...Reference Series 475a 4 3 2 CHANNEL POWER AMPLIFIER SERVICE MANUAL Infinity Systems Inc 250 Crossways Park Dr Woodbury New York 11797 Rev0 8 2007 Released 2007 Discontinued XXXX...

Page 2: ...s 1 THD N Signal to noise ratio 85dBA reference 1W into 4 ohms Dynamic power 117W channels 2 ohms Effective damping factor 6 3 4 ohms Frequency response 10Hz 100kHz 3dB Maximum input signal 6 0V Maxim...

Page 3: ...s b full rated power dB 90 dBA 1 watt into 4 ohms 1V signal input Input Sensitivity Low Level Input v full rated power 100mV 6V Volts 20 Frequency response Unit 3dB 10Hz 100kHz Hz 3dB High Pass Crosso...

Page 4: ...Carton 1 2 REF475a REF475a Amplifier 1 3 Plastic Bag 1 4 BZL279112001 Packing Foam 1 5 Visit Infinitysystems com Owner s manual 1 6 Plastic Bag 1 7 Accessory kit consisting of 1 LS1CJ0402507 Mounting...

Page 5: ...p To Head Unit Rear Output Rear Speakers Front Speakers The 475a can be set up for stereo 4 channel 3 channel or bridged 2 channel operation as shown in Figures 5 through 8 NOTE Minimum speaker impeda...

Page 6: ...d in tri mode to a subwoofer and a pair of satellite speakers Note crossover and channel assignment settings Figure 8 475a connected in bridge mode to a pair of full range speakers Note crossover and...

Page 7: ...dway While listening to music adjust the crossover for the least perceived distortion from the speakers allowing them to reproduce as much bass as possible Low Pass Filters For subwoofers choose the h...

Page 8: ...5KJ0301007 Screw for terminal RCA jacks 6 9 XN 10500 012 Knob 6 10 LSIAP0300607 Screw 6 11 LSIAM0300607 Screw 2 12 XG 0017 2601 Bottom plate 1 13 LSIAY0301201 Screw 2 14 PL L0007 000 Transistor spring...

Page 9: ...Hz AMP AMP INPUT RL INPUT RR OP OP 1 2 3 4 IMS INPUT 2 3 1 4 A MODE FRONT REAR SUB 2 3 1 4 A MODE FRONT REAR SUB 2 3 1 4 A 2 3 1 4 A MODE RIGHT STEREO LEFT MODE RIGHT STEREO LEFT 1 3 2 A 1 3 2 A OP OP...

Page 10: ...475a Reference Series 9...

Page 11: ...475a Reference Series 10...

Page 12: ...475a Reference Series 11...

Page 13: ...475a Reference Series 12...

Page 14: ...475a Reference Series 13...

Page 15: ...475a Reference Series 14...

Page 16: ...R116 R115A R115 R51 0701 2822 02 Resistor SMD 8 2K 1 8W 5 0805 1 R134 0701 2103 02 Resistor SMD 10K 1 8W 5 0805 52 R23 R133 R132 R131 R130 R113A R113 R110A R110 R109A R109 R108A R108 R107A R107 R104A...

Page 17: ...105 50V 5 2 C10 C28 06D212274002 CAP Electro 220UF 25V 20 1 C30 06D211086100 CAP Electro 1000UF 50V 12 5 25MM 105 20 6 C32 C31 C55 C38 C34 C33 06D211073116 CAP Electro 100UF 16V 20 5 11 105 1 C18 06D...

Page 18: ...RFZ48N TO 220 6 Q21 Q20 Q16 Q15 Q14 Q13 03P1 B647 01 Transistor 2SB647 1A 120V 0 9W PNP TO 92 4 Q4C Q4B Q4A Q4D 03N1 35CW 26 Transistor TIP35CW NPN T0 247 4 Q6D Q6C Q6B Q6A 03P1 36CW 26 Transistor TIP...

Page 19: ...006000 Ceramic Capacitor SMD 10pF 50V 0805 NPO 5 5 C315 C314 C230 C215 C214 06S322206000 Ceramic Capacitor SMD 22pF 50V 0805 NPO 5 3 C210 C224 C223 06S321016000 Ceramic Capacitor SMD 100pF 50V 0805 NP...

Page 20: ...0301007 Screw 3 10MM Plating Nickel 6 LS5KP0300807 Screw 3 8MM Plating Nickel 8 LS1AP0300607 Screw 3 6MM Plating Nickel 6 LS1AM0300607 Screw PM3 6 Plating Nickel 2 KT 200012200 CAP White PVC for RCA 3...

Page 21: ...475a Reference Series 20...

Page 22: ...5W C10A CL224 R12A 100R R7A 10K C6A 471 MUTE CH1SG R26A 20K C1A W22U 50V R6A 10K CH1OUT R5A 10K PRO VCC VCC CH1OUT MUTE CH1SG R20A 150R 1 4W R11A 10K Q8A S8050 VCC VCC 2 3 1 R22A 0 10 5W C4A 391 100V...

Page 23: ...5W C10B CL224 R12B 100R R7B 10K C6B 471 MUTE CH2SG R26B 20K C1B W22U 50V R6B 10K CH2OUT R5B 10K PRO VCC VCC CH2OUT MUTE CH2SG R20B 150R 1 4W R11B 10K Q8B S8050 VCC VCC 2 3 1 R22B 0 10 5W C4B 391 100V...

Page 24: ...5W C10C CL224 R12C 100R R7C 10K C6C 471 MUTE CH3SG R26C 20K C1C W22U 50V R6C 10K CH3OUT R5C 10K PRO VCC VCC CH3OUT MUTE CH3SG R20C 150R 1 4W R11C 10K Q8C S8050 VCC VCC 2 3 1 R22C 0 10 5W C4C 391 100V...

Page 25: ...5W C10D CL224 R12D 100R R7D 10K C6D 471 MUTE CH4SG R26D 20K C1D W22U 50V R6D 10K CH4OUT R5D 10K PRO VCC VCC CH4OUT MUTE CH4SG R20D 150R 1 4W R11D 10K Q8D S8050 VCC VCC 2 3 1 R22D 0 10 5W C4D 391 100V...

Page 26: ...4558 7 9 8 VR100AC A50K 10 12 11 VR100AD A50K LPF FLAT HPF 15VA 15VA C109A CC22P CH4 R114A 62K R113A 10K 15VA 15VA CH2SG CH1SG CH3SG CH4SG C110 CC104 C111 CC104 C112 CC104 C113 CC104 C110A CC104 C111...

Page 27: ...45FR RJ45FL RJ45GND RJ45GND RJ45GND RJ45REM DIAGNOSTIC RJ45SUB RJ45GND SUB RJ45SUBOUT RJ45SUBOUT R307 10K R301 22K C316 NP220U 25V C318 CC101 R308 10K R300 10K INPUT C300 W22U 50V C314 CC10P C319 CC10...

Page 28: ...CHECKED BY APPROVED BY DATA DATA DATA POWER infinity REF 475 Q20 IRF48N Q21 IRF48N R64 100 R42 100 R6 10K C8 CC104 Q12 C1815 R21 10K Q11 C1815 R35 22K C15 47U 16V R22 10K R34 10K Q17 C1815 Q18 A1015...

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