Velleman K8011/K8010

the thermionic watercooler

Re: Velleman K8011/K8010

Postby jamesfeline » Sat Feb 06, 2016 4:47 am

Thanks Tom

shall I leave the thread in its current location ?
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Re: Velleman K8011/K8010

Postby jamesfeline » Sat Feb 06, 2016 4:58 am

some final pics of power up and biasing

Image

Image

now the unit being tested with music .. the board worked 1st time, and sounds great even with only one channel


Image

Image

Image

Image
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Re: Velleman K8011/K8010

Postby jamesfeline » Sat Feb 06, 2016 5:01 am

I have now started to make a rack case for the power amplifiers

I purchased the cases from hifi2000 .. and modded the case accordingly. The tiger I made up and is laser etched, the tiger eyes light up when the unit is on .. I also had a 3mm chassis plate made to fit the case (again laser etched)
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Re: Velleman K8011/K8010

Postby Fred » Mon Aug 15, 2016 10:10 am

Hi James,

That is awesome! I was just trying to buy 2 Velleman K8010 kits, but they are obsolete.... Where did you buy the special components, such as the transformers??

And are you using the 4x K88 tubes from the Velleman electronic design?

I would be interested in doing what you just did.

Kind regards,

Fred
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Re: Velleman K8011/K8010

Postby soundbrigade » Wed Aug 17, 2016 9:14 am

I am Siriusly impressed. Good work!
Also I am a bit confused why you picked the Elektor's design and a question about the odd installment of the resistors in the first pics. Are they carrying current and gets too hot to be soldered to the PCB?
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Re: Velleman K8011/K8010

Postby TomMcNally » Wed Aug 17, 2016 1:13 pm

Magnus - those are the cathode resistors. They also act as fuses ! It's much easier to replace them with that above the board mount. Good idea ! I should do that with my K-4000.

... tom
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Re: Velleman K8011/K8010

Postby soundbrigade » Wed Aug 17, 2016 1:44 pm

A VERY good idea. Maybe something to try in the future. Besides it gives good places to hook up a voltmeter when checking bias current.
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Re: Velleman K8011/K8010

Postby Quad » Sun Aug 21, 2016 7:32 am

Beautiful work...very nice indeed!
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Re: Velleman K8011/K8010

Postby jamesfeline » Sat Apr 22, 2017 7:47 am

thanks all

New project to be uploaded soon ;)
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Re: Velleman K8011/K8010

Postby highflyin9 » Mon Aug 14, 2017 9:51 am

Ugh the Photobucket situation is so annoying. Wish we could still see the pics.
My DIY Electronics Blog: DIYAudioBlog.com
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Re: Velleman K8011/K8010

Postby jamesfeline » Wed Nov 15, 2017 11:14 am

Hello

I can upload some more builds if interested ?

regards
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Re: Velleman K8011/K8010

Postby jamesfeline » Wed Nov 15, 2017 11:27 am

some new pictures

no good .. max file limit is 1MB .. WAY TO SMALL ?
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Re: Velleman K8011/K8010

Postby jamesfeline » Wed Nov 15, 2017 11:34 am

you can always go on diy audio site

and complete a search all the post are on there

http://www.diyaudio.com/forums/tubes-va ... hread.html

try this
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