the enlightened bride of zen

[df]

I am proud to present the nearly finished enlightened bride of zen.



Thank you everybody here on diyaudio, I have learned a lot in the last two years reading this forum. Without you all, this preamp would never had been possible…..

Daniel

 

[Nelson Pass]

I have sent your delightful photo over to Desmond for
posting on www.passdiy.com with your kind permission.

 

[Netlist]

There's enough capacity to blow up the Gothard tunnel

Please give us more info and pictures.
This looks real cool

/Hugo

 

[df]

Thank you very much Nelson, please wait 2 or 3 weeks so I have time to finish the case and to send more and better pictures

Hugo:
It ist not as much as you may think. The big cans are 6 Siemens MKV 6,8uF as coupling caps. I had vor 1 year a test setup, were I testes a lot of caps, Jensen paper in oil, mundorf, philps mkt, elna mkp and so on, the best was Siemens MKV (danke Bernhard, hier im Analog-Teil).

Beside the transformer, IRF510 and Audiofad professional pot all parts are bought ebay or taken out of computer power supplies

 

[df]

psu circuit:

 

[df]

enlightened boz circuit:

 

[moe29]

So you're using LED's to replace the Zener Diodes?

Looks pretty neat, could you explain how you got the idea?

Very creative

 

[df]

I like to try new ways

First was the joke to replace R104 1k and R108 100 by little, orange light bulbs in homage to my first read of NP's master pieces, zen variations 1.
Worked as good as with resistors and looked good.

Second was to change the Zener diodes by yellow LED. Someone posted here, to replace Zener Diodes in Alephs CCS by LED.

Then I learned here (in german): http://www.elektronik-kompendium.de/public/schaerer/curr2pol.htm
LED work better as voltage reference under constant current conditions. And there I saw the CCS dipole with this aesthetic symmetry, I had to use it, this time in blue.

You have to use some blue ones Pass designs

Last was to change the voltage reference in BOZ also by green LED. So I tested all of my IRF510 to find matching two to the reference of 4 green LED

I like the coloured gleam, but the WAF is not really high…..

Daniel

 

[Frazzled]

Sorry not much to add to this thread but I just HAD to chime in and say;

THAT IS COOL!

 

[df]

It took a little bit longer. The case is now finished.

Nelson, what is the email adress to send the pictures to passdiy?

Daniel

 

[df]

and one from the side:

 

[Netlist]

Hugo:
It ist not as much as you may think.

Common, there's nothing else then caps in that amp.

Very special design, I really like it a lot.
I'm not Nelson but I can handle this. Go to www.passdiy.com and click on 'gallery' for the email address.

/Hugo

 

[df]

Thank you Hugo for the tip and the nice words. I 've send the text and the pictures yesterday to passdiy.

You can find more pictures and german text here:
http://www.diallery.com/members/df/eboz/

Daniel

 

[df]

The enlightened bride of zen has arrived at diy'ers heaven:

http://www.passdiy.com/gallery/boz-p11.htm



Please give me some comments, even if they are not so nice, as long as I can learn.....



Thanks to everybody here

Daniel

 

[enochRoot]

beautiful (pre)amp!!! one of the best i've seen in quite a while. i'm all about original layouts/chassis design!!