Alto aMictube Service Manual Download Page 1

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Service Manual

www.altoproaudio.com

Version: 1.1

Model: aMICTUBE

STEREO TUBE PREAMP

Summary of Contents for aMictube

Page 1: ...Service Manual www altoproaudio com Version 1 1 Model aMICTUBE STEREO TUBE PREAMP ...

Page 2: ...CONTENTS 1 Specification 1 2 Block Diagram 1 3 Schematic Diagram 3 4 Printed Circuit Board 11 5 Wiring Diagram 1 6 Test Procedure 2 7 Electrical Parts List 11 8 Exploded Views 1 9 Notes ...

Page 3: ...se Reverse 20 dB Pad 48V Phantom Power Performance THD Noise 0 5 Signal To Noise 90dB Power Supply Rejection 98dB Amplifier Type Dual Servo Meter 8 Digit LED 24dBu to 18dBu Physical Weight 1 05Kg Dimensions 131 W X116 D X44 H mm 5 16 X4 57 X1 7 Chassis Steel Panel Brushed Aluminum LTO Style Power Supply Type Linear External Input 18VAC Power 14Watts Transformer External Wall Mount ...

Page 4: ... 11 33 Block Diagram U1 INA163 TUBE 12AX7 2 1 3 2 1 3 4 2 1 3 22 11 33 2 1 3 1 2 3 4 5 6 X1 X2 X3 U2 INA163 POWER SUPPLY VOLTAGE REGULATOR AC18V 12VDC 15VDC 15VDC 48VDC PHANTOM CH1 MICROPHONE INPUT CH2 MICROPHONE INPUT CH1 OUTPUT CH2 OUTPUT PHASE PHASE PAD 20dB PAD 20dB ...

Page 5: ...4P C56 104P C59 104P C52 104P C55 104P C51 104P C54 104P 24 18 12 6 0 6 12 18 3 2 1 D8 DA204K D5A DA204K D6A DA204K CN8 14 CN9 14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 CN8 HEADER 8X2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 CN9 HEADER 8X2 CN8 1 CN8 2 CN8 3 CN8 4 CN8 6 CN8 8 CN8 10 CN8 12 CN8 14 CN8 16 CN8 5 CN8 7 CN8 9 CN8 11 CN8 13 CN8 15 CN9 1 CN9 3 CN9 5 CN9 7 CN9 9 CN9 11 CN9 13 CN9 15 CN9 2 CN...

Page 6: ... U4C TL074CD R53 10K0 R52 10K0 R57 1K00 R54 10K0 CH2 OUT C16 100P R37 100R R69 301K R51 301R C43 0 47U C42 0 47U R78 1M00 R84 301R 10 9 8 U5C TL074CD 12 13 14 U5D TL074CD R75 1M00 C26 100P R40 100R R46 301K R80 1M00 C44 0 47U C7 0 47U R77 1M00 5 6 7 U5B TL074CD 3 2 1 U5A TL074CD R79 1M00 C27 104P 12 13 14 U4D TL074CD C29 0R R59 R58 C28 R60 0R LOW BUMP 48V 12V 1 2 3 4 5 6 X3 X2 X1 J1 COMB XLR S SS ...

Page 7: ...100K R91 100K C47 47 50VNP C48 47 50VNP R88 100K R70 6K81 C49 47 50VNP 2 1 3 4 J5 BAL MALE 12 13 14 U5D TL074CD 3 2 1 U5A TL074CD 10 9 8 U5C TL074CD R42 100R R46 51R1 1 2 3 4 5 6 7 CN4 7P 2 0 15V 15V CH1 OUT CH2 OUT C8 100 63V D3 1N4004 D4 1N4004 R83 10K R92 150R C68 M104P C7 100 63V U13 LM7815CT U14 LM7915CT D1 1N4004 D2 1N4004 C66 47 25VZ C70 M104P C64 2200 25V C67 47 25VZ C65 1000 25V C69 M104P...

Page 8: ...ottomLayer ASCII File NCDrillOutput TXT EIA File NCDrillOutput DRL Tool Hole Size Hole Count Plated Tool Travel T1 24mil 0 6096mm 72 29 54 Inch 750 27 mm T2 31mil 0 7874mm 140 30 14 Inch 765 64 mm T3 39mil 0 9906mm 28 14 01 Inch 355 84 mm T4 79mil 2 0066mm 4 9 78 Inch 248 33 mm T5 83mil 2 1082mm 9 6 04 Inch 153 35 mm T6 87mil 2 2098mm 4 10 82 Inch 274 86 mm Totals 257 100 33 Inch 2548 29 mm Total ...

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Page 10: ...AMTUBEMN Top Layer AMTUBEMN Top Solder Mask AMTUBEMN Bottom Layer AMTUBEMN Bottom Solder Mask ...

Page 11: ...Plated Tool Travel T1 24mil 0 6096mm 58 26 73 Inch 678 84 mm T2 31mil 0 7874mm 44 20 77 Inch 527 61 mm T3 35mil 0 889mm 32 11 01 Inch 279 53 mm T4 39mil 0 9906mm 15 13 68 Inch 347 41 mm T5 47mil 1 1938mm 20 9 43 Inch 239 45 mm T6 138mil 3 5052mm 2 8 74 Inch 221 92 mm T7 83mil 2 1082mm 4 NPTH 6 86 Inch 174 24 mm T8 138mil 3 5052mm 2 NPTH 15 44 Inch 392 11 mm Totals 177 112 64 Inch 2861 12 mm Total ...

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Page 13: ...AMTUBEPU Top Layer AMTUBEPU Top Solder Mask AMTUBEPU Bottom Layer AMTUBEPU Bottom Solder Mask ...

Page 14: ...Inch 264 49 mm T3 31mil 0 7874mm 57 20 11 Inch 510 86 mm T4 39mil 0 9906mm 29 14 11 Inch 358 42 mm T5 47mil 1 1938mm 4 10 33 Inch 262 28 mm T6 59mil 1 4986mm 12 12 09 Inch 307 05 mm T7 63mil 1 6002mm 4 10 41 Inch 264 44 mm T8 110mil 2 794mm 2 9 26 Inch 235 31 mm T9 126mil 3 2004mm 1 9 77 Inch 248 28 mm T10 71mil 1 8034mm 4 NPTH 10 90 Inch 276 85 mm Totals 128 113 50 Inch 2883 01 mm Total Processin...

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Page 16: ...PCB AMTUBEFP ...

Page 17: ...PCB AMTUBEMN ...

Page 18: ...PCB AMTUBEPU ...

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Page 20: ...Required Equipment Audio Precision System 2 with APWin software 100MHz oscilloscope connected to APS2 Analyzer Signal Monitor output Ch A and Ch B Connection Mode Use Audio Precision System 2 analog unbalanced XLR inputs output ...

Page 21: ...output of the device under test A input of Audio Precision System Two CH2 output of the device under test B input of Audio Precision System Two On the aMICTUBE Set INPUT GAIN to zero Set DRIVE to maximum Start the sweep F9 and control the results Page3 Graph in the following conditions SEKAKU 06 25 02 11 48 07 Color Line Style Thick Data Axis Red Solid 1 Anlr Level A Left Magenta Solid 1 Anlr Leve...

Page 22: ...2 05 24 2002 08 16 修正日 Page 1 of 1 2002 10 26 A aMICTUBE ALTO 230V 法國 1 1 000 PCS A aMICTUBE 底板組合 2 1 000 PCS P aMTUBEFP SMD 3 1 000 PCS P aMTUBEFP DIP 4 1 000 PCS P aMICSKT DIP 5 1 000 PCS P aMTUBEMN SMD 6 1 000 PCS P aMTUBEMN DIP 7 1 000 PCS P aMTUBEPU SMD 8 1 000 PCS P aMTUBEPU DIP 9 1 000 PCS ...

Page 23: ...000 φ3 φ6 5 0 5t black plated screw 11 MSCB58 MARK PCS 4 000 iron board pill 3 10 black plated screw 12 MSCB13 MARK PCS 10 000 cross head pan head 3 6 black plated screw 13 MSCB34 MARK PCS 2 000 pill 3 6 black plated screw 14 MSCB38 MARK PCS 4 000 3 7 Ni screw 15 MSCN20 MARK PCS 1 000 flat 3 8 LED spacer support 16 NPL325 MARK PCS 1 000 φ3 1 85 transformer 17 TG00040 MARK PCS 1 000 230V 50Hz AC18V...

Page 24: ...No specify Item Name Specific NO Material No Unit Quanity Ps label 29 NMLH31 MARK 2 000 MADE IN P R C bracket 30 MI00943 MARK PCS 2 000 aMICTUBE L R S nut 31 MST003 MARK PCS 2 000 9φ bracket 32 MI01379 MARK PCS 1 000 aMICTUBE round rubber tube 33 NLXC18 MARK PCS 1 000 φ5 10 label 34 NE05888 MARK 2 000 Pre amplificateur ...

Page 25: ...1 000 aMICTUBE AMP Item No specify Item Name Specific NO Material No Unit Quanity Ps bottom board black 1 MBTZ05ZZ MARK PCS 1 000 aMICTUBE iron pillar 2 MMC014 MARK PCS 1 000 hexagon 6 35 M3 9 2 3 MMC010 MARK PCS 2 000 iron pillar 4 MMC019 MARK PCS 1 000 hexagon6 35 M3 8 4 copper plated ...

Page 26: ...CA1100 MARK R PCS 2 000 1 00KΩ 1 0603 72 74 SMD 1 10W precise resistor 10 RPCA1158 MARK R PCS 2 000 1 58KΩ 1 0603 108 99 resistor 11 RD00285 MARK R PCS 2 000 3 24KΩ 1 0603 100 109 resistor 12 RD00286 MARK R PCS 1 000 4 53KΩ 1 0603 123 resistor 13 RD00287 MARK R PCS 2 000 6 34KΩ 1 0603 101 110 SMD 1 10W precise resistor 14 RPCA1806 MARK R PCS 2 000 8 06KΩ 1 0603 102 111 resistor 15 RD00290 MARK R P...

Page 27: ...MARK LD PCS 4 000 LI2340 A 3φ red 16 21 22 8 L E D 6 DL50RY MARK LD PCS 2 000 LVY2340 A 3φ yellow 15 7 row pin single 5200 7 HCSP07001 MARK CN PCS 2 000 2 0 180 2 8P gold plated 4 8 5mm 8 9 sw 8 HI00162 MARK SW PCS 2 000 PS 22E8552L 3 3x3 3 4 5 SW 9 HI00163 MARK SW PCS 3 000 PS 42E85L 3 3x3 3 1 2 3 potentiometer 10 RVS132 MARK VR PCS 2 000 C1KΩ R1411GOA V1C102FN00 00 3 4 potentiometer 11 RC00211 M...

Page 28: ...ific NO Material No Unit Quanity Ps 1 4W precise resistor 1 RPB2100S MARK R PCS 2 000 10 0KΩ S type 120 121 1 2W fixed resistor 2 RFA010S MARK R PCS 1 000 10Ω S type 122 row pin 3 HCSP02001 MARK CN PCS 1 000 2 54 90 8P gold plated 6 14mm 1 2mm 4 auto reveres appliance 4 HEM201 MARK TB PCS 1 000 12AX7WA 1 5 HCSS77 MARK TB PCS 1 000 1 ...

Page 29: ...R PCS 6 000 10 0KΩ 1 0603 52 53 54 55 56 61 SMD 1 10W precise resistor 11 RPCA2200 MARK R PCS 4 000 20 0KΩ 1 0603 21 22 23 24 SMD 1 10W precise resistor 12 RPCA3301 MARK R PCS 4 000 301KΩ 1 0603 26 46 68 69 SMD 1 10W precise resistor 13 RPCA4100 MARK R PCS 12 000 1 00MΩ 1 0603 15 16 41 42 43 44 75 76 77 78 79 80 SMD 1 10W fixed resistor 14 RFCF000 MARK C PCS 5 000 0Ω 5 0603 29 48 R60 R86 RO SMD060...

Page 30: ...4 7 20 21 22 23 24 25 34 37 38 39 71 72 electrotytic capacitor 3 CE647E 3 MARK C PCS 2 000 47uF 25V 105 φ6 3 7 78 79 electrotytic capacitor 4 CE647G 1 MARK C PCS 4 000 47uF 63V LZ 105 φ8 12 11 12 13 14 electrolytic capacitor 5 CE710I MARK C PCS 2 000 100uF 63V φ10 12 5 3 4 row pin header single 5800 6 HCSB03 MARK CN PCS 2 000 2 0 180 2 8P 16 4 4 2 5mm 1 2 mix balance jack 7 HCSM51 MARK J PCS 2 000...

Page 31: ... 41 42 43 44 SMD 1 10W precise resistor 4 RPCA1681 MARK R PCS 2 000 6 81KΩ 1 0603 68 70 SMD 1 10W precise resistor 5 RPCA2100 MARK R PCS 2 000 10 0KΩ 1 0603 80 82 SMD 1 10W precise resistor 6 RPCA2200 MARK R PCS 8 000 20 0KΩ 1 0603 25 26 67 69 77 78 79 81 SMD 1 10W precise resistor 7 RPCA3100 MARK R PCS 6 000 100KΩ 1 0603 86 87 88 89 90 91 SMD0603 ceramic capacitor 8 CCE047B MARK C PCS 4 000 47PF ...

Page 32: ... electrotytic capacitor 9 CE822V MARK C PCS 1 000 2200 25V φ16 25mm 64 rectifier diode 10 DR008A MARK D PCS 4 000 1N4004 400V 1A 1 2 3 4 zener diode 11 DZA47V MARK ZD PCS 1 000 1 2W 47V 1N5261 9 transistor 12 STR121 MARK TR PCS 1 000 TIP112 or TIP122 7 integrated circuit 13 SIC705 MARK U PCS 1 000 7812 15 integrated circuit 14 SIC717 MARK U PCS 1 000 7815 13 integrated circuit 15 SIC719 MARK U PCS...

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