Audio Note L2 Line Preamplifier Manuals

Audio Note L2 Line Preamplifier Manuals

Manuals and User Guides for Audio Note L2 Line Preamplifier. We have 1 Audio Note L2 Line Preamplifier manual available for free PDF download: Instruction Manual

Audio Note L2 Line Preamplifier Instruction Manual

Audio Note L2 Line Preamplifier Instruction Manual (88 pages)

Brand: Audio Note | Category: Amplifier | Size: 3.26 MB

Table of Contents

Table of Contents
2
Section1: Introduction
4
- General Information
  4
- Preparation
  4
- Soldering
  5
- De-Soldering
  6
Section 2: Mechanical Assembly
7
- Installing the Feet
  7
- Mains Transformer, Choke, and Mains Installation
  7
Section 3: M2 Power Supply
17
- M2 Power Supply Board Parts List
  18
- M2 Power Supply Board Construction Steps
  19
Section 4: M2 Power Supply Testing
41
- Preparations
  41
  - Fitting the Mains Fuse
    41
  - Installing the LED Indicator
    42
  - Installing the Tubes
    42
  - Tidying up
    42
- Ohm Check
  43
- Electrical Testing
  43
- Voltage Check Summary
  45
  - DC Voltage Checks
    45
  - AC Voltage Checks
    45
Section 5: Install the Screen
46
Section 6: Line Board Assembly
47
- Line Stage Schematic
  48
- Line Board Parts List
  49
- Installing the Board Spacers
  49
- Valve Base Installation
  49
- Resistor Installation
  50
- Capacitor Installation
  51
Section 7: Wiring up the Line Stage
53
- Filament Wiring
  53
- HT and Power Supply Ground Wiring
  54
- Electrical Test
  55
Section 8: RCA Input, Selector and Noble Volume Pot
57
Section 9: Audio Signal Test
65
Section 10: Output Wiring
67
- RCA Connections
  67
- Line Board Connections
  67
Section 11: L2 Phono Board Build and Installation
68
Section 11: Finishing off
82
- Fitting the Faceplate
  82
- Attaching the LED to the Faceplate
  82
- Final Thoughts
  83
Appendix
84
- Resistor Color Code Reference
  85
- Line Stage Schematic
  86
- M2 Power Supply Schematic
  87
- Phono Board Schematic
  88

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