Zv9

[Nelson Pass]

Zen Variations #9 is up at www.passlabs.com/np under zv9.doc
(Word format).

 

[steenoe]

That's cool Thank you very much

Steen

 

[Mad_K]

Very nice and educational article! Thanks again Nelson

 

[moe29]

3rd

...reading now.

 

[Dennis Hui]

Thank-you, thank-you, thank-you!!!

Dennis

 

[steenoe]

What a beauty Start soldering

Steen

 

[tschrama]

Truly fascinating and inspiring, great work mr Pass.

 

[massimo]

Great!

When the first Zen amplifier was published 12 years ago, I did not particularly imagine the course the exploration would take....

......Remarkably, we seem to have made real progress. The original Zen amplifier we measured .6% harmonic distortion at 1 watt, and here we see about 1/100th of that figure. I believe that the best correlation between measured performance and subjective listening occurs with simple circuits, giving rise to the obvious question - does this sound 100 times better?

No, only about 10 times better.

What can we say more?
You're the One and Only!

 

[Netlist]

I still have to work myself trough the whole article but I find it interesting that the modulated cascode seems to have the greatest inpact on distortion factors.

Nice and elegant as always, I'd call it the Château d'Iquem of the Diyer.

/Hugo

 

[metalman]

Single Gain Stage with 0.003% distortion at 1W and I don't think Nelson is done with this exploration. Leaves me speachless. Also leaves me with some ideas to try.

Thanks Nelson

 

[analogair]

Thanks Nelson, very nice

Very nice and interesting reading.
You really got a big and clear knowledge about designing totally awesome amp's Nelson

 

[apassgear]

Thank you once again Nelson for this fine present. Hope I'll be able to build this one very soon.

 

[carpenter]

Wonderful job, Nelson!

I'm curious, will there be a balanced input version? I plan to run this design on my tweeter horn (500hz to 20k), but my system from the x-over forward is balanced, not single ended.

At any rate, this is sweet. I'm setting the Aleph 30 project aside for awhile.

John

 

[Nelson Pass]

Gee, thanks guys...

 

[Zen Mod]

I'll not say tnk ya!


again
and
again
and
again








anyway-even if I'm pretty sure that I'll not build it , it's a peach


I'll not even convert it to pdf

 

[mastertech]

i downloaded the article too, but i havent read it yet
i also wish to thank Dr Pass for being such a great sport to
diyaudio community

kind regards

 

[Alain Dupont]

Nelson,

Wouahhhhhhh !!!!! thanks so much, astounding perf's.

Grey, I'll need the JFet's ....

Regards.

Alain.

 

[lineup]

I tried open ZV9.doc
with my WordPad program. This is what i normally use for .doc

There is an error and it wont open.
Something with the graphics.

I will have to wait for a Webpage version ( at passdiy.com ) or a PDF document
to see if there is anything new and interesting for me.

Just thought I let you know.
There can be others having same problem with actual version of ZV9.doc


/lineup - who knows how to wait, he not worry too much

 

[massimo]

No problem with this file.
I you want a pdf right now, email me and I'll revert in that format.

 

[flg]

I think a bridged version might suit me... However, I guess these same benifits will apply to a Pwr JFET, follower, cascoded, output arrangement??? Or does "the FET does not know what configuration it's in" not apply here???
I was working on a Circlotron circuit (follower output) lately but, it is not the output that makes the distortion in a design like that. A Zenlike voltage amp stage is the difficulty. I've been thinking the JFET might not fit into that project... Hmmm
Toche Nelson