4
Table of contents
Introduction ........................................................................................................................................... 7
Assembly Instructions .................................................................................................................. 8
PCBs Preparation ................................................................................................................................. 9
Heater Filament PCB
...................................................................................................................... 9
Main Power Supply PCB ........................................................................................................... 11
Stuffing the Amplifier PCBs ..................................................................................................... 18
Socket Soldering ...................................................................................................................... 18
Components Soldering ......................................................................................................... 20
Mounting Components ................................................................................................................... 22
IEC socket ........................................................................................................................................ 24
Power/Main Transformer ....................................................................................................... 25
Audio Output Transformers ................................................................................................... 26
PCBs ................................................................................................................................................... 27
Speaker and Audio Input (phono) Connectors ............................................................... 28
Potentiometer and Potentiometer PCB ............................................................................. 29
Wiring .................................................................................................................................................... 30
Power Cables ................................................................................................................................. 33
Safety Earth ............................................................................................................................... 33
IEC to Power Switch .............................................................................................................. 34
Power Switch To Power Transformer ........................................................................... 34
Power Transformer to Main Power Supply PCB ....................................................... 35
Main Power Supply PCB (B+) to Amplifier Boards (B+) ........................................ 36
Heater Filament Power Cables ......................................................................................... 38
Audio cables wiring .................................................................................................................... 40
RCA Terminals to Potentiometer PCB ........................................................................... 41
Potentiometer PCB to Amplifier PCB ............................................................................. 41
Potentiometer PCB to Amplifier PCB ............................................................................. 43
Amplifier Boards Wiring ..................................................................................................... 45
Speaker Output Wiring ........................................................................................................ 47
Assembly Completion ..................................................................................................................... 49
Powering Up For The First Time ............................................................................................... 50
Questions / Support ........................................................................................................................ 52
Appendix .............................................................................................................................................. 53
I.
Screws / Nuts / Bolts Sizes ............................................................................................ 53
II. Amplifier PCB Components ........................................................................................... 54
III.
Main Power Supply PCB Components ................................................................. 54
IV.
Heater Filament PCB ................................................................................................... 54
V. Schematics ............................................................................................................................ 55
Figure 1 - Filament supply board with the four diodes ...................................................... 9
Figure 2 - Filament supply board with the four diodes ................................................... 10
Figure 3 – Main power supply PCB with C4 capacitor and the bleeder resistor, R5
........................................................................................................................................................ 11
Figure 4 – Main power supply PCB with two diodes ........................................................ 12
Figure 5 – Main power supply PCB with all diodes installed ........................................ 13
Figure 6 – Main power supply PCB with all radial capacitors ...................................... 14
Summary of Contents for 6BM8/ECL82 SE
Page 1: ...Assembly Manual 6BM8 ECL82 SE 2 5W Classique MKII Version 3 0 Caledonian Audio ...
Page 6: ...6 ...
Page 10: ...10 Figure 2 Filament supply board with the four diodes ...
Page 16: ...16 Figure 8 Main power supply PCB fully populated ...