• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

K8011/K8010 PCB build thread

Bespoke Constructor
Joined 2006
Paid Member
Hello just a quick update

As I have started to put the valve monoblock into a rack case .. what do you all think ? the top panel that will go on the case is fully vented .

enjoy the pictures .... let me know your thoughts ..:)
 

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Bespoke Constructor
Joined 2006
Paid Member
some more pics .. the transformer mounting took some thought but got there in the end
 

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Bespoke Constructor
Joined 2006
Paid Member
Hello samb .. that is a very nice kind comment, many thanks really appreciate it

This project did take some time, and I nearly lost interest in it, but I am very glad with the finsihed result .. glad I completed it now. This is one of 2 (as both are mono blocks)

It does take many hours of experimenting and manhours to get to the finished result, but again many thanks for the kind comments .. most welcome

Nick
 
Bespoke Constructor
Joined 2006
Paid Member
Hello Artosalo

The basic case comes from hifi2000 webshop. I then laser engrave the front panel to my own design. Then the case feet are handmade by me and then chrome plated ?(very heavy duty feet) I make these on my lathe.

I then get a aluminium plate laser cut to form the bottom chassis plate which mounts all the circuit boards and components.

Then I just make the amplifier by hand ...... :)
 
Bespoke Constructor
Joined 2006
Paid Member
Hello

Sorry for the delay .. I added a full on/off switch, and use the small toggle switch for standby etc & pre heat for the valves

The plastic blocks you see are normally open contact switch blocks for the power on/off switch. I also use a snubber capacitor across the live contact to stop arcs and mains borne spikes etc

regards
 
Bespoke Constructor
Joined 2006
Paid Member
Hello .. it's alive, another K8011 fired up that's works & sounds beautiful
some more pics for you all .. comments please postive & constructive!
 

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Bespoke Constructor
Joined 2006
Paid Member
some more pics the resistors are the dummy loads for testing in the previous post
 

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Bespoke Constructor
Joined 2006
Paid Member
some more pics ......
 

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Last edited:
Bespoke Constructor
Joined 2006
Paid Member
and some more ......
 

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