x2fet and diefet preamp (www.techniguitare.com)

[gkoerselman]

On this forum at www.techniguitare.com I found these two FET based preamps. Has anyone build these or taken notice of them before? The x2fet I believe is meant to emulate Dime's sound on a X2 warhead and the diefet emulates a Diesel VH4.

The site and forum are in french but once you register it's not too difficult to find the schematics.

[dschwartz]

copy the url of the schem images and post the here..
I´m too lazy to suscribe to a french page (i dont speak french) just too see 2 schems...

[Ben N]

I really, REALLY don't want to get into that snakepit again, but for the sake of prudence if not morality, don't post possibly copyrighted images from another site here without permission. Even if it is French.

[Steben]

On a forum however, they share information. I would be really du chauvinisme IMO if this forum wouldn't be able to view the same as another. Unless the information on the one is an offence already.

[gkoerselman]

I'm putting down the links from the forum post. You should be able to reach these without login or subscription, only the forum is login protected.

diefet:
http://balloon-hosteur.zzl.org/diy/DIEFET.pdf
http://www.techniguitare.com/projets/DieFet/DIEFET-V1-11.pdf

http://www.techniguitare.com/projets/DieFet/Schema-DieFet-V1.jpg
http://www.techniguitare.com/projets/DieFet/PCB-DieFet-Implantation-V1-11.jpg
http://www.techniguitare.com/projets/DieFet/BomDiefetV1-1.txt
http://www.techniguitare.com/projets/DieFet/PCB-DieFet-CoteSoudures-V1-11.jpg

http://www.techniguitare.com/projets/DieFet/Sample-DieFet-V1-104715.mp3
http://www.techniguitare.com/projets/DieFet/Sample-DieFet-V1-condor-direct-console.mp3
http://www.techniguitare.com/projets/DieFet/Sample-DieFet-V1-deep-muse.mp3

x2fet:
http://www.techniguitare.com/Fiches/X2FET-V1.pdf

http://pagesperso-orange.fr/sxsyl20/x2fet/X2FET.jpg
http://pagesperso-orange.fr/sxsyl20/x2fet/x2fet.txt
http://pagesperso-orange.fr/sxsyl20/x2fet/x2fet.gif

http://pagesperso-orange.fr/sxsyl20/x2fet/X2FET-panthera.mp3
http://pagesperso-orange.fr/sxsyl20/x2fet/X2FET.mp3
http://pagesperso-orange.fr/sxsyl20/x2fet/X2FET-condor-direct-carte-son.mp3

http://img299.imageshack.us/img299/1387/pcbscreenshotyn5.png
http://img374.imageshack.us/img374/6803/typonhq5.png
http://img170.imageshack.us/img170/5680/pantherasimulatorschemaat9.jpg

[Ben N]

Well, I don't see any harm in a little linky or two...

[fuzzo]

You want a translation into english ?

[frank_p]

Diefet: I think it's not for "two FETS" but for FET version of the Diesel amplifier.
Well, that is what they are saying in french.
It would be like a ROG amp "simulator" for the Diesel.

[The French connection]

Yeah but i think the original poster talk about ''two'' different fet preamp: the DieFet and the X2Fet...

Babel tower syndroma!

Danny

[frank_p]

Bi..di..di..eeeeh, ehf fh..f..f.ffff...ffffffffffffffffffff.fe..fe..fet.

Babel tower syndroma!

Yes Dan, a dialfect communication problem, it's diefetrent.

I am all fetct-up...

[mnordbye]

I do like the sound samples, they're not in French at least.. 

Magnus Nordbye

[ech0es]

Hello guys

I'm the creator of the diefet project, feel free to post your opinion about this project here or on techniguitare.

We hope you will like it if you build one but keep in mind that it's forbidden to do a commercial use of this project (we worked six months on i t!)

And you're totally right: it's the first Jfet simulation of a Diezel Amp: the VH4 (the channel 3 and 4).

[frank_p]

Hello guys

I'm the creator of the diefet project, feel free to post your opinion about this project here or on techniguitare.

We hope you will like it if you build one but keep in mind that it's forbidden to do a commercial use of this project (we worked six months on i t!)

And you're totally right: it's the first Jfet simulation of a Diezel Amp: the VH4 (the channel 3 and 4).

Cool ! Great Work !

[dschwartz]

i really like that sort of cabinet simulator that you added at the end..this kind of preamps tends to give too much treble content

[ech0es]

this kind of preamps tends to give too much treble content

in fact the diefet has a lot of bass but you have 3 controls to adjust them: BASS , DEEP, and an extra control ( the resistor of 330k, can be replaced by a potentiometer of 500k)

[gkoerselman]

I see that the diefet requires 12V but is biased for the J201's at 6. Any reason for this?

(I'm just realizing that I have no 12V adapters... yet)

[ech0es]

higher voltage gives more dynamic and more tubey sound to jfet. the 9v jfet trimpot is on 4.5v, so for 12v it's 6v. it's give more dynamic to the sound, and it's a caracteristic of the diezel sound

[ech0es]

anybody started a prototype ? 

[gkoerselman]

Can I best use a 12V balanced or unbalance adapter for this?

I'm looking at the Minwa PS-9112GSF-S 12V at the moment (from here: http://www.banzaieffects.com/Multi-Voltage-Power-Supplies-c-940.html).

Anyone know if this would work?

[mattthegamer463]

I'm going to give this a try, using the vero layout cut in half and folded over on itself for a double-layer board, so that I can cram it into a 1590B enclosure.  Ill post pics when its done.