Infinity 475a Service Manual Download Page 10 | Manualshive

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475a

Reference

Series

9

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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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