Beast with a Thousand JFETs

[Blues]

They do a decent imitation.

So my concern would be MTBF ...Uriah

Tough little buggers...and at 15V and about 10 - 12mA (Mr. Pass?) they'll be singing for a long, long time. I think he is also planning on lowering down to +/-12V using batteries.

 

[jacco vermeulen]

Here is not 1000 JFETs, but

The secret and very evil weapon for the IP Thievery club.
Read that smile, it says : go ahead and clone this, you Bluedy Sckrs.

 

[Luke]

theres gotta be a better way to make a jfet output stage

 

[Atilla]

Ooh, shiny. I want one now. Encased behind clear class so people can see how crazy it is.

 

[Vix]

There are several things to discourage competition from cloning this amp:

1) It must be soldered by hand, and it takes a lot of time (impatient competition will roll their eyes upon seeing it-wont even think about soldering 3000+legs)
2) Papa will purchase all remaining stock of J-fets, so there won't be any left for competitors

The good thing is that, when Papa gets bored of these amps, he will have years supply of J'fets (and some even for us). Imagine a conversation after 10 years: Halo, Nelson, I want to build a Jfet preamp, but I can't find any jfets...
Papa: Wait, I have some on the boards of those beasts, somewhere in my basement...lemme unsolder some and I'll send them to you...

 

[Zen Mod]

did I told ya that I saw pic ( on secret AR2's server ) of entire shelf , linen with these boards as books ?

by my calculation - there is around 72 of them ....... so you can count number of jfets ......

 

[dfidler]

Cool thread, sorry it took so long to find it. I'd be interested in seeing some measurements from the final products. Were they ever taken?

 

[Nelson Pass]

So my concern would be MTBF with several thousand of the little critters in there. If one goes bad do we just lose one or do we lose the board?
Uriah

We lose one.

 

[Nelson Pass]

Imagine a conversation after 10 years: Halo, Nelson, I want to build a Jfet preamp, but I can't find any jfets...
Papa: Wait, I have some on the boards of those beasts, somewhere in my basement...lemme unsolder some and I'll send them to you...

I left the leads long.

 

[Vix]

We lose one.

Assuming 1000 Jfets per channel, by loosing one, we loose 0.1% of sound quality? Somebody may hear that!

 

[Zen Mod]

I left the leads long.

 

[jacco vermeulen]

Right, 4 times 588 times 3, pfff.

 

[h_a]

Hi Nelson,

so you finally had time to finish your a thousand jfet beast ;-)

Amazing how you regularly come up with something completely different (TM). Really nice fun stuff.

I hope you enjoy your work at least as much as we do. Thanks for sharing.

 

[tiefbassuebertr]

are there any news regarded this project?

 

[EUVL]

Nelson,

Jan Didden told me that he heard the working amp at the BA festival.
I wonder what your own final verdict is ?


Patrick

 

[Nelson Pass]

It works very well. I haven't had the time to play with it as much
as I would like. I finally got Jill to bring her macro lens back from the
coast so I could take the pictures I need, and the article will be finished
in about 3 weeks.

Jan has chosen my SIT article over this, so then I have to decide where to
put it. Maybe AudioXpress.

 

[EUVL]

You can always put it here for the wider audience.




Patrick

 

[nar]

You can always put it here for the wider audience.




Patrick

I second that

nAr

 

[regiregi22]

I second that

nAr

Another vote!

 

[EUVL]

Too few....
NP is not going to change his mind with 3 votes !!


Patrick