ANK Mentor 2A/300B - Installing the Driver Board

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Page 89

10.2.5 Installing the Driver Board

Add 4 M4 standoffs to the board.

Position the wires going to — and coming from — the Driver board as shown below.

Main Page

Table of Contents2
Section 1 - Introduction6
About ANK Audio Kits7
Basic Operation of the Amplifier8
Overview8
Component Placement9
Pinout10
Equipment11
Overview of the Kit11
Tips and Suggestions11
Soldering11
Components12
Resistor Sizes12
Capacitor Manufacturers and Voltage Ratings12
Electrolytic Capacitors12
Diodes13
Hardware/Mechanical13
Wire Stripping and Tinning13
Wire Color14
Optional Finishing Touches14
Build Process14
Some Good Rules of Thumb for Building Your Amplifier14
Organization of this Manual15
Electrical Safety Warning17
Section 2 - Mechanical Assembly and Initial Power Supply Wiring18
Overview18
Installing the Feet19
Installing the IEC Socket and Rocker Switch21
Installing the Speaker Posts22
Installing the RCA Jacks23
Installing the Chassis Ground Screw24
Installing the Mains Transformer25
Bundling the Mains Wires27
Preparing the Mains Ground Wire28
IEC PCB Wiring30
Connecting and Mounting the IEC Board33
Installing the Choke35
Section 3 - Power Supply Board Installation37
Overview37
Parts List39
Installing the Valve Base39
Installing the Resistors40
Installing the Capacitors and Diode42
Section 4 - Filament Supply Board Installation44
Overview44
Parts List46
Installing the Resistors46
Installing the Bridge Rectifiers46
Installing the Capacitors47
Installing the Regulators47
Section 5 - Driver Board Installation49
Overview49
Schematic51
Parts List52
Installing the Valve Bases52
Installing the Resistors53
Installing the Capacitors53
Section 6 - Output Transformers Installation55
Overview55
Installing the Output Transformers56
Section 7 - Power Supply Board Interwiring58
Overview58
Connecting the Choke60
Connecting the Mains Secondary Wires61
The CHS Connection62
The Blue/White and LED NEGATIVE Connection63
The Remaining Connections63
Installing the Power Supply Board65
Section 8 - Filament Supply Board Interwiring66
Overview66
Connecting the Mains Secondary Wires67
Additional Connections68
Installing the Filament Supply Board69
Section 9 - Chassis-Mounted Output Section Installation70
Overview70
Installing the Tag Strips72
Wiring the Tag Strips72
Installing the Tag Strips76
Installing the Valve Bases77
Wiring the Valve Bases77
Wiring the Left Valve Base79
Wiring the Right Valve Base80
Installing the Valve Bases80
Section 10 - Additional Interwiring81
Connecting the RCA Jacks81
Driver Board Interwiring82
Installing the Filament and Filament Jumper Wires83
The 6SH7 and GND Connections85
The O/P Connections86
The LED POSITIVE Connection88
Installing the Driver Board89
The Signal Connections90
Connecting the Speaker Posts91
Section 11 - Testing94
Overview94
Installing the Fuse95
Initial Tests96
First Power-Up96
Filament Test97
Voltage Checks97
Sound Check102
Debugging103
Mains Secondary Voltages103
Section 12 - Finishing Touches104
Installing the Front Faceplate104
Installing the LED104
Last Looks Inside104
Installing the Chassis Top104
Section 13 - Final Thoughts105
Congratulations105
Cables105
Tube Rolling106
5U4G(B)106
6Sh7106
And 2A3107
Thanks107
Appendix108
Wiring for 240V109
Resistor Color Code Reference112

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