Alto ACL8 Service Manual
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Alto ACL8 Service Manual

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MODEL: ACL8
www.altoproaudio.com
Version 1.0
Revised on Apr,2010

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Summary of Contents for Alto ACL8

  • Page 1 MODEL: ACL8 www.altoproaudio.com Version 1.0 Revised on Apr,2010...

  • Page 2: Table Of Contents

    CONTENTS 1. Introduction………………………………………………………………………………….1 2. Specification…………………………………………………………………………………2 3. Block Diagram………………………………………………………………………………3 4. Schematic Diagram………………………………………………………………………..4 5. Wiring Diagram…………………………………………………………………………….7 6. PCB Layout………………………………………………………………………………..8 7. Exploded View & Mechanical Parts List………………………………………………13 8. Trouble Shooting ………………………………………………………………………..15 9. BOM List………………………………………………………………………………….16...

  • Page 3: Introduction

    It includes several innovative circuit designs that make the ACL 8 a very versatile processor: smart and fast recognition of the program, adjustable Expander/Gate and very low distortion Voltage Control Amplifier (VCA). ACL8 features as follows: ▲ Illuminated power switch ▲ Mountable in a 19" rack unit ▲...

  • Page 4: Specification

    2. Specification Type Active balanced XLR and 1/4'' jack Impedance Balanced >50kohm, Unbalanced>25 kohm Input Section Operating level +4dBu/-10dBV Max input level +21dBu balanced and unbalanced CMRR Typically >55dB at 1KHz Type XLR and 1/4'' jack Output Section Impedance Balanced 60ohm, Unbalanced 30 ohm Max output level >+21 dBu Type...

  • Page 5: Block Diagram

    3. Block Diagram --- 3 ---...

  • Page 6: Schematic Diagram

    4. Schematic Diagram --- 4 ---...
  • Page 7 --- 5 ---...
  • Page 8 --- 6 ---...

  • Page 9: Wiring Diagram

    5. Wiring Diagram --- 7 ---...

  • Page 10: Pcb Layout

    6. PCB LAYOUT --- 8 ---...
  • Page 11 --- 9 ---...
  • Page 12 --- 10 ---...
  • Page 13 --- 11 ---...
  • Page 14 --- 12 ---...

  • Page 15: Exploded View & Mechanical Parts List

    7. Exploded View & Mechanical Parts List --- 13 ---...
  • Page 16 Mechanical Parts List S/N Part No Description Specification Remark MA07139 ZC-front panel-RS ACL8 ALTO_V1.0 MB05638 ZC-chassis and rear panel-RS ACL8 CHINA_V1.0 MC00420 ZC-top cover-RS-ACT CLE8.0 TD00119 loop transformer-RS PT-CLE8.0_115V NI00443 rubber coil-RS φ20*φ60*2tB ME00016 multicolored nut-RS 1.loop PT & GND cable MF00019 multicolored washer-RS-CT φ4*φ12*1.0t_V1.0...

  • Page 17: Trouble Shooting

    8. Trouble Shooting Symptom Likely Cause What to do Speaker not connected to active Verify that speaker is connected and that the circuit is No sound AC power Power not switched on Switch on power and verify that power Led is on Speaker power cable is faulty or *Re-seat theh power cable at both ends;...

  • Page 18: Bom List

    ├0016 NE05038 label-RS-ACT ACL8_V1.1 ├0017 NB05643 inner case-RS ACL8 ALTO_V1.0 ├0018 NB01924 barrier CLE8.0 ├0019 NB01691 carton (2H)ALTO 19" used to series ├0020 NC00167 mica-RS 13*18(φ3.6)TO-220 ├0021 NA00279 clip-chain bag 0.04t*100*150mm_V1.0 ├0022 NA00862 PE bag-RS 0.04t*580*300 mm ├0023 NA00137 clip-chain bag ├0024...
  • Page 19 Rank Part No Description Specification Insert location Remark CI00063 SMD ceramic capacitor 0603 470PF/50V NPO ±5﹪ C18,C19,C5,C6,C7 │　│　├0022 CI00075 SMD ceramic capacitor 0603 0.1uF/50V Y5V +80,-20% C11,C12,C13,C14,C21,C22,C23,C24 │　│　├0023 SE00011 SMD rectifier diode RLS4148 0.5A (LL-34) │　│　├0024 SG00122 SMD integrated circuit-RS-ACT NJM4580M-TE3(SOP8)/(JRC) IC1,IC2,IC4 │　│　├0025...
  • Page 20 14P-14P 220mm UL1007 28AWG │　├0021 HA01933 jump 2.5mm │　├0022 HA01093 wire-RS 7P-7P 40mm UL1007 28AWG CN17 │　├0023 NI02288 acrylic panel CLE8.0 ALTO │　├0024 AC00603 lead free soldering bar S100 │　├0025 HK01784 PC board P-CLE8.0-DISPLAY-1-SMD │　├0026 HB00728 CLE8.0DISPLAY(1*8)_VER020813 │　│　├0001 RD00274 SMD precise resistor 1/10W 100Ω...
  • Page 21 Rank Part No Description Specification Insert location Remark RD00283 SMD precise resistor 1/10W 1.58KΩ ±1% 0603 │　│　├0008 RD00203 SMD precise resistor 1/10W 2.00KΩ ±1% 0603 │　│　├0009 RD00385 SMD precise resistor 1/10W 3.01KΩ ±1% 0603 │　│　├0010 RD00285 SMD precise resistor 1/10W 3.24KΩ...
  • Page 22 φ3.2*φ5*0.8t fix SW button*2 │　└0010 NI03251 knob 19.3*19.2*7_V1.0 ├0062 NI03252 switch key 32*12.53*14_V1.0 ├0063 NI03253 bole 15*15*10.7_V1.0 ├0064 NE02717 label MADE IN CHINA ├0065 NF03058 user manual-RS ACL8 ALTO_V1.0 ├0066 MG00396 screw M4*45 1. loop PT └0067 --- 20 ---...

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