Papa-seems that you already burn your free time here,so maybe you can take a peek at

[Zen Mod]

http://www.diyaudio.com/forums/showt...958#post944958


that is just a rough sketch;
mebbe you can comment something, wakoo/short/hugger
mugger....?



here or there
or everywhere
or even
nowhere


TIA ,as always......

[jh6you]

Originally posted by choky
[B
mebbe you can comment something, wakoo/short/hugger
mugger....?

...
[/B]

You have to re-write,

"Dear Nelson, could you please review it and give me any advice?"

Muhahahahahahahah . . . . . . . . . .

[jacco vermeulen]

Choky is in need of a good spanking again.

[Nelson Pass]

It so happens that I built almost exactly the same circuit, although
I don't seem to have my curves here on the computer. I used
9240's and 240's, .47 ohm Source resistors, and pots to trim
the (1k) resistors instead of trimming between the JFETs. This
allows trimming of all parameters. Also, I did not degenerate
the Sources of the JFETs with the 22 ohm resistors.

It worked fine and sounded good. The performance will be very
bias dependent, and you will want to put as much bias on the
output stage as you can. I recall that I ran the outputs at
about 2A each, and I got about 100 watts out of it.

[Zen Mod]

Originally posted by Nelson Pass
It so happens that I built almost exactly the same circuit, although
I don't seem to have my curves here on the computer. I used
9240's and 240's, .47 ohm Source resistors, and pots to trim
the (1k) resistors instead of trimming between the JFETs. This
allows trimming of all parameters. Also, I did not degenerate
the Sources of the JFETs with the 22 ohm resistors.

It worked fine and sounded good. The performance will be very
bias dependent, and you will want to put as much bias on the
output stage as you can. I recall that I ran the outputs at
about 2A each, and I got about 100 watts out of it.

tnx Papa,as always

I intend to make it,if I do , with at least 2A through each side .......



hehe-I'm glad that you responded before any sort of spanking

[Zen Mod]

Papa -if I may ask another one question....

what is your opinion/attitude about using diodes/zenner/led as level shifters in active stages?

example-if I need to use weeny jfet in place with higher voltage,and I can achieve that only with cascoding or I can use mentioned elements connected to source(s)......?
I saw that already somewhere on the net,but I'm interested what you'll say........
even if lack of this arrangement in your constructions is evident

[Zen Mod]

veeery rough sketch.

good thinking or not?

[Zen Mod]

still not want to abuse Papa's personal e-mail box.........

[Nelson Pass]

You cascode transistors are inverted Source for Drain.

[Zen Mod]

Originally posted by Nelson Pass
You cascode transistors are inverted Source for Drain.

nah,that is just minor mistake certainly made in >cut'n'paste< game pretty late at night.........

anyway-tnx Papa- like always,your answer is good as best riddle