Beast with a Thousand JFETs

[Melon Head]

Hi Nelsom
I don't know if you mentioned it elsewhere or not. Is this going to be a single gain stage design?

 

[tiefbassuebertr]

"Beast with a Thousand JFETs" as integrated circuit in the outline of Sanken's 2SC2922 or in the outline of TO-3 - what about this?
The question is, from which value of pieces the costs therefore acceptable.
I have heard about Zetex (now "DIODES") and low costs by retatively low pieces of custom made IC's, but I don't know exactly.
Here is the weblink:
Diodes Incorporated

 

[Nelson Pass]

Hi Nelsom
I don't know if you mentioned it elsewhere or not. Is this going to be a single gain stage design?

I believe I will have some sort of front end for it, something
with a little voltage gain.

😎

 

[Melon Head]

I believe I will have some sort of front end for it, something
with a little voltage gain.

😎

Does that mean it will be something like an F4 with voltage gain provided by the preamp, or are you saying it will have voltage gain on the amp?

 

[Nelson Pass]

It will have voltage gain. The board you saw was simply
a follower output stage, and will be driven by a voltage
gain stage.

😎

 

[iko]

Is it alive yet?

 

[Nelson Pass]

It's a very time consuming project.

😎

 

[zhoufang]

Any progress in the new year?

 

[Zero Cool]

I'll let you know when I finish the 2nd channel.

😎

You know this raises a good point i have often contemplated. lets say your building a new amp design. do you build a stereo amp/pair or build one. listen to it in mono, make adjustments, modifications then when finalized build the 2nd channel to match??

(sorry to hijack the thread)

 

[tiefbassuebertr]

B & K 501A FET transistor curve tracer

By chance I have found this:

B & K 501A mint FET transistor curve tracer, for Osh Russia - JPCTRADE X Yahoo! Auction
perhaps helpful for this project and some others, where selecting is necessary.
Owner's Manual therefore:
http://www.tech-systems-labs.com/other-kits/bk501.pdf

 

[Nelson Pass]

do you build a stereo amp/pair or build one. listen to it in mono, make adjustments, modifications then when finalized build the 2nd channel to match??

I always work with 2 channels.

😎

 

[Zen Mod]

I always work with 2 channels.

😎

that means that beast isn't real beast - just 500 jfets/ch

sissy amp






( ok - I know that from first post - 588 of them ..... )

 

[Nelson Pass]

Since it's simply an exercise in scale, I already know quite a
bit about the sound. The board in the photo can be 2 channels,
one channel, or half a channel. I have 5 boards.

😎

 

[Zen Mod]

bad Papa ..... baaad !

again smarter than ZM

 

[Vix]

It can also be 5.1 😛

 

[EUVL]

> Since it's simply an exercise in scale, I already know quite a bit about the sound.

Meaning you already have one working ?

Regards,
Patrick

 

[Nelson Pass]

Yes, I do.

😎

 

[Magura]

So, spill the beans will you?

Quite a few of us are on the edge of our seats.


Magura 🙂

 

[Zen Mod]

naah - not me ;

I'll make beast with thousand EAA91

 

[Nelson Pass]

So, spill the beans will you?

All in good time. Like Julian Schwinger, I like to present the
edifice after all the scaffolding is removed. This reinforces my
reputation as a miracle worker.

😎