(http://img521.imageshack.us/img521/5263/diefetlogowf2gh3.jpg)
Used by matthew bellamy, metallica, staind, wes borland, tool, smashing pumpkins etc..
http://www.techniguitare.com/projets/DieFet/DIEFET-V1-11.pdf
Matthew Bellamy / Muse (http://i145.photobucket.com/albums/r213/Johnny_Wah/muse2.jpg)
Adam Jones / Tool (http://www.andreasrauscher.de/diezel/data/famous/famous003.jpg)
Billy Corgan / Smashing Pumpkins (http://www.andreasrauscher.de/diezel/data/famous/famous008.jpg)
James Hetfiled / Metallica (http://www.andreasrauscher.de/diezel/data/famous/famous009.jpg)
Kirk Hammeth / Metallica (http://www.andreasrauscher.de/diezel/data/famous/famous013.jpg)
Mark Tremonti / Creed / Alter Bridge (http://www.andreasrauscher.de/diezel/data/famous/famous016.jpg)
Wes Borland / Limp Bizikit / Black Light Burns / Marilyn Manson (http://www.andreasrauscher.de/diezel/data/famous/famous019.jpg)
Mike Mushock/ Staind (http://img166.imageshack.us/img166/2403/staind2my1.jpg)
PCB (http://www.techniguitare.com/projets/DieFet/PCB-DieFet-CoteSoudures-V1-11.jpg)
Dimensions : 135 x 44 mm.
BOM (http://www.techniguitare.com/projets/DieFet/BomDiefetV1-1.txt)
Layout (http://www.techniguitare.com/projets/DieFet/PCB-DieFet-Implantation-V1-11.jpg)
Any questions, go to:
http://www.techniguitare.com/forum/viewtopic.php?t=7386
more infos in english:
http://www.freestompboxes.org/viewtopic.php?f=13&t=3196&st=0&sk=t&sd=a
Seems interesting. I might give it a try.
shame on me, i forgot the samples:
Sample n°1. (http://www.techniguitare.com/projets/DieFet/Sample-DieFet-V1-104715.mp3)
Sample n°2. (http://www.techniguitare.com/projets/DieFet/Sample-DieFet-V1-condor-direct-console.mp3)
Sample n°3. (http://www.techniguitare.com/projets/DieFet/Sample-DieFet-V1-deep-muse.mp3)
Some samples will come, a lot of people are building it
these samples are a little bit bassy (the guitar is low tuned) but you have 3 controls to adjust the bass on this pedal: BASS / DEEP / And an extra control "CUT" who decrease the bass BEFORE the tonestack and the DEEP control.
A 1.2 version is on test with a "dynamic" knob to adjut it.
I like this.
wow i like it
sounds darkk
has anyone built it?
Im going to build one in the next week or two and see how it turns out. The clips sound a lot fuzzier and looser than the VH4 I had but it still sounds pretty cool. It looks like a pretty big PCB too. I think youd have to go at least as big as a 1790 to fit that PCB and 7 pots in.
wat're the G pads? coz the bill of materials syas that it "masse" wats that?
masse=ground in french ;)
Here is a sticker to put on your pedal if you want an original VH4 design:
(http://img185.imageshack.us/img185/8386/diefetfrontsticker2wj1.jpg)
;)
a better version will come
Thanks for offering this project.
Is there any way you could re make the PDF so the images are clear?
The links to the layout and PCB traces are ok in the non pdf links but the schematic is almost unreadable in the pdf.
Also, if you try to open the PCB image in photoshop it will not open due to some .jpg issue.
If you save it and open it in windows pic/fax viewer and then save it as gif it will open in Photoshop.
Strange!
john
Quote from: John Lyons on September 17, 2008, 10:57:43 AM
Is there any way you could re make the PDF so the images are clear?
The links to the layout and PCB traces are ok in the non pdf links but the schematic is almost unreadable in the pdf.
You have the direct links to the schematic, the pdf and the layout, don't use the PDF version.
Can you show me where the schematic link is please?
thanks
john
Quote from: ech0es on September 16, 2008, 04:03:39 PM
Any questions, go to:
http://www.techniguitare.com/forum/viewtopic.php?t=7386
and at this adress you have this:
http://www.techniguitare.com/projets/DieFet/Schema-DieFet-V1.jpg
Sounds like a Metal Zone met up with a gassy burrito. :icon_lol:
is it a compliment or a reproach? :D
The metal zone can be very interesting if modded, a "Diezel" mod exists
Don't focus on these samples , some others will come and show the versatility of this pedal ;)
bon ba ca y est Techniguitare.com s'exporte! :D
Quote from: ech0es on September 18, 2008, 06:31:50 AM
is it a compliment or a reproach? :D
The metal zone can be very interesting if modded, a "Diezel" mod exists
Don't focus on these samples , some others will come and show the versatility of this pedal ;)
...deleted...
modifications of the schematic, it kicks ass !
(http://pagesperso-orange.fr/sxsyl20/diefet/Diefet-V1.2.JPG)
http://pagesperso-orange.fr/sxsyl20/diefet/diefet-testyyy.mp3
and here is a sticker:
(http://img228.imageshack.us/img228/3988/diefetstomp3dz4.jpg)
omgggggg
it sounds just awsome
someone must build it
maybe ill have some way to make a pcb and ill make it cause it sounds soo good
http://www.techniguitare.com/projets/DieFet/Diefet-V1-21.mp3
made in france guys ;)
through voxengo boogex and amplitube for the speaker sim:
http://www.soundclick.com/bands/page_songInfo.cfm?bandID=728473&songID=6934858
a builder from F r e e s t o m p b o x e s
http://www.4shared.com/download/65373136/202039c4/Diefet_sample_rock.mp3
Quote
I build last week, nice project Cool
Much better low end than dr.boogey..
i so want to buy a pcb from you
i think all time what to do
cause i've just made an order of a jcm 800 + les paul
and i dont want my father to kill me
can somebody keep this thread alive god da,,,
i love the sound clips
sound dark and soo better than dr boogie(imo)
you can order a Diefet PCB on techniguitare
Give me your email in pm and i will give it to the PCB maker of techniguitare
Test with fuzz factory!
PartI: Fuzz Factory + Diefet
PartII: Fuzz Factory + Jcm800 Jfet simulation
HERE (http://pagesperso-orange.fr/sxsyl20/diefet/FF-diefet-Jcm800.mp3)
wow
i want to hear the jcm emulations alone
i've never heard about someone that made it
can you give some samples to the jcm emulation
and give the email of the vh4 pcb seller
Go on techniguitare.com for the jcm800 simulator
Quotele premier sample pour voir la difference du son normal et avec le boost gain :
* intro sans le boost gain puis avec le boost gain (heavy):
http://pagesperso-orange.fr/sxsyl20/jcm800simu/jcm800emul-simhp-heavy.mp3 (http://pagesperso-orange.fr/sxsyl20/jcm800simu/jcm800emul-simhp-heavy.mp3)
le 2eme sample avec le boost gain ( heavy):
http://pagesperso-orange.fr/sxsyl20/jcm800simu/jcm800emul-simhp-heavy2.mp3 (http://pagesperso-orange.fr/sxsyl20/jcm800simu/jcm800emul-simhp-heavy2.mp3)
le 3eme sample sans le boost gain (hard):
http://pagesperso-orange.fr/sxsyl20/jcm800simu/jcm800emul-simhp-hard.mp3 (http://pagesperso-orange.fr/sxsyl20/jcm800simu/jcm800emul-simhp-hard.mp3)
le 4eme sample avec le gain a 4 sans le gain boost ( sauf solo gain a fond) ( blues):
http://pagesperso-orange.fr/sxsyl20/jcm800simu/jcm800emul-simhp-blues.mp3 (http://pagesperso-orange.fr/sxsyl20/jcm800simu/jcm800emul-simhp-blues.mp3)
For Diefet pcb seller send me your mail in PM
Quote from: ech0es on October 12, 2008, 05:01:27 AM
Go on techniguitare.com for the jcm800 simulator
Quotele premier sample pour voir la difference du son normal et avec le boost gain :
* intro sans le boost gain puis avec le boost gain (heavy):
http://pagesperso-orange.fr/sxsyl20/jcm800simu/jcm800emul-simhp-heavy.mp3 (http://pagesperso-orange.fr/sxsyl20/jcm800simu/jcm800emul-simhp-heavy.mp3)
le 2eme sample avec le boost gain ( heavy):
http://pagesperso-orange.fr/sxsyl20/jcm800simu/jcm800emul-simhp-heavy2.mp3 (http://pagesperso-orange.fr/sxsyl20/jcm800simu/jcm800emul-simhp-heavy2.mp3)
le 3eme sample sans le boost gain (hard):
http://pagesperso-orange.fr/sxsyl20/jcm800simu/jcm800emul-simhp-hard.mp3 (http://pagesperso-orange.fr/sxsyl20/jcm800simu/jcm800emul-simhp-hard.mp3)
le 4eme sample avec le gain a 4 sans le gain boost ( sauf solo gain a fond) ( blues):
http://pagesperso-orange.fr/sxsyl20/jcm800simu/jcm800emul-simhp-blues.mp3 (http://pagesperso-orange.fr/sxsyl20/jcm800simu/jcm800emul-simhp-blues.mp3)
For Diefet pcb seller send me your mail in PM
yea but there's a problem to register the forum
they're french and they sent me an email in french and i dont know what yo do further
Maybe go to a link to active your account.
Use google translator ;)
The JCM800 simulator is from this website:
http://www.4thlevelmedia.com/stompboxes.html
Does anyone have the schematic for the original Amp?
No
a related thread? http://www.diystompboxes.com/smfforum/index.php?topic=71446.new#new
more volume mod:
Just put a jumper instead of the 220k resistor and the 100p capacitor before the ouput
sample!
http://www.techniguitare.com/projets/DieFet/DieFet-V1-3.mp3
With this mod and then without this mod
NONE KNOBS IS MANIPULATED between the two parts, the only difference is the mod ;)
Has anyone come up with a smaller/better layout than the original? The original layout was really big with all of the pots mounted on the boards...
Sounds pretty sweet. I'm gonna have to build one of these. Too bad i already have four projects ahead of it in line . . . :icon_eek:
Quote from: audioguy on December 04, 2008, 11:52:37 AM
Has anyone come up with a smaller/better layout than the original? The original layout was really big with all of the pots mounted on the boards...
Here is a different version:
http://www.techniguitare.com/projets/DieFet/Gorets08Diefet1-11.pdf
but it's the 1.1 version, you have to change some values to have the 1.21
(http://www.techniguitare.com/projets/DieFet/DieFetGorets08-2.jpg)
i think it can't be smaller
I don't know if it's smaller, but here is my build (it wasn't finished in the picture yet but it's finished and working now):
(http://lh4.ggpht.com/_u7xqoMKS8x4/ST_QPRQ7ULI/AAAAAAAAAp0/2n3Lx7uQYL4/s720/DieFet%20-%20PCB%20%28300dpi%29.png)
(http://lh3.ggpht.com/_u7xqoMKS8x4/ST_QPCpjH1I/AAAAAAAAApk/smVKBLR9Uig/s640/IMG_9300.jpg)
(http://lh4.ggpht.com/_u7xqoMKS8x4/ST_QPbOrZUI/AAAAAAAAAps/sghWhkvB62c/s720/_DieFet%20%28300dpi%29.png)
Stuff got a bit squashed around the C6 and C8 cap but it all fits in the end. Should have moved C12 a bit to the left and up as well. If you want the eagle files PM me.
ps. The layout is based on version 1.1 and not 1.21
nice! PM sent
thanks!
Quote from: ech0es on September 16, 2008, 04:18:38 PM
you have 3 controls to adjust the bass on this pedal: BASS / DEEP / And an extra control "CUT" who decrease the bass BEFORE the tonestack and the DEEP control.
I may be crazy, but I don't see any kind of "CUT" control on the schematic or layout. Is this something built in or am I just not looking in the right place?
to have the "cut control" you have to use a trimpot or a potentiometer of 500k instead of the 330k resistor.
This resistor with the 47nf , just after the third fet make a highpass filter with a cut frequency at 10Hz.
You can change this value from 5Hz to 340Hz with the new pot from 10k to 500k.
I was wondering what that note in French meant... Thanks!
for the 1.21 version, it's the 3,3n cap and the 100k resistor after the third jfet
Quote from: gkoerselman on December 10, 2008, 09:31:41 AM
I don't know if it's smaller, but here is my build (it wasn't finished in the picture yet but it's finished and working now):
Stuff got a bit squashed around the C6 and C8 cap but it all fits in the end. Should have moved C12 a bit to the left and up as well. If you want the eagle files PM me.
ps. The layout is based on version 1.1 and not 1.21
I just finished this build and wasnt able to get anything but oscillation. BUT I noticed that one of the trim pots is 500k AFTER building the entire thing... I dont have any 500k trimmers, so I'll have to put the trouble shooting on hold.
Thanks for the layout... I'll keep working on it.
QuoteI just finished this build and wasnt able to get anything but oscillation. BUT I noticed that one of the trim pots is 500k AFTER building the entire thing... I dont have any 500k trimmers, so I'll have to put the trouble shooting on hold.
Thanks for the layout... I'll keep working on it.
When I build mine initially I messed up and put in a 100k trim pot. Couldn't get the voltage to bias at 6V, but I got sound.
mine:
(http://img509.imageshack.us/img509/646/spa0793pe1.jpg) (http://imageshack.us)
(http://img509.imageshack.us/img509/spa0793pe1.jpg/1/w480.png) (http://g.imageshack.us/img509/spa0793pe1.jpg/1/)
(http://img509.imageshack.us/img509/1900/spa0794cy9.jpg) (http://imageshack.us)
(http://img509.imageshack.us/img509/spa0794cy9.jpg/1/w640.png) (http://g.imageshack.us/img509/spa0794cy9.jpg/1/)
(http://img511.imageshack.us/img511/9489/spa0795fn6.jpg) (http://imageshack.us)
(http://img511.imageshack.us/img511/spa0795fn6.jpg/1/w480.png) (http://g.imageshack.us/img511/spa0795fn6.jpg/1/)
Quote from: gkoerselman on December 15, 2008, 03:06:07 PM
QuoteI just finished this build and wasnt able to get anything but oscillation. BUT I noticed that one of the trim pots is 500k AFTER building the entire thing... I dont have any 500k trimmers, so I'll have to put the trouble shooting on hold.
Thanks for the layout... I'll keep working on it.
When I build mine initially I messed up and put in a 100k trim pot. Couldn't get the voltage to bias at 6V, but I got sound.
I was looking at the other layouts- they all have 1 more trim pot than your layout??
Quote from: audioguy on December 16, 2008, 08:47:24 AM
I was looking at the other layouts- they all have 1 more trim pot than your layout??
From what I see, it looks like the extra trimpot is actually the "cut" control. I could be wrong, however.
hmmm...
The original schematic lists a 330k resistor with a trim pot replacement as an option (R8 in Echo's layout, wired as variable resistor), yes the 'cut' control.
Version 1.21 has a 100k resistor in there instead. In my schematic this would be R12.
Have you audio probed your build yet? If you would like me to measure points in my build, PM me...
ps. Debugging is always madly frustrating, but it's where you learn the most about this stuff.
I just finished this build using Gerrit's layout. I made the version 1.21 mods and left out the presence pot, and this thing is great. My one observation as of right now is that the gain control is mildly useless. If I were to build this thing again, I would probably just put in a fixed resistor and call it good. I mean, this is meant to be high gain, so why try to tone it down (especially when I have other pedals that will do that for me). Short and long is I love it. The deep control allows you to get that really bottom heavy metal sound. Great stuff.
i don't agree with the fact that the gain control is useless: If you change the setting you can find some level of various crunch, who change with the dynamic of your picking.
Soft Pick -> Slight crunch
Hard pick -> Heavy crunch
It's a very dynamic distortion pedal!
I just finished V1.21. There wasn't enough volume for some reason but bypassing the 220k/100pf before the output did the trick and now there's enough for a passive boost. I'm not sure if the drive/gain control is behaving as it should. When fully CCW there is some drive but almost no volume. Is that how it should work?
When I turn the gain CCW, I get a volume drop, but still a decent amount. The thing I notice is that the distortion gets fizzy and not terribly desirable. But that is just mine. Plus, I always just crank the gain, I have other better crunch/medium distortion pedals.
Share your settings!
My Matthew bellamy/Wes Borland settings:
GAIN: 2h30
VOL: 4h30
DEEP: 10h30
BASS: 9h30
MIDDLE: 3h
TREBLE: 3h
PRESENCE: 3h30
Use the volume pot of your guitar to experiment several level of crunch (slight crunch-->Fat ass crunch)
Hey,
can anyone help me, i want to buy one of these pcbS but can't find anywhere on the site to do it
Here: http://www.techniguitare.com/forum/viewtopic.php?t=8209
Send a mail to shaddo, he'll give you all the info.
Perfect, thank you ;D
Is there a layout of Diefet version 1.21?
Can someone post it here?
And echoes, can i have some pictures of the pedal you posted earlier from the inside. I want to see how i can manage to fit it in BB enclosure.
Thanx in advance,
Jeff
I made the V1.2 mods on a V1.1 board, you can put the cap on the gain pot itself and then the other values are just changes to the values (no new locations, really) and make sure that the deep pot only has the two lugs wired. Takes about 5 minutes.
Thanx,
Is there anyone who can tell me whether i can fit this pedal into a BB enclosure with battery?
battery means 9v, the diefet will sound much better with higher voltage
hey Echoes, what is the right voltage for it? 12 or 18?
Could you send me some pics of the guts of this pedal? Can i fit it in the BB enclosure?
THanx
Jeff
Quote from: ech0es on March 25, 2009, 08:43:27 PM
battery means 9v, the diefet will sound much better with higher voltage
But I could run it from 9V DC Adaptor and add a voltage doubler like this one: http://www.elecfree.com/electronic/voltage-doubler-with-ic-555/ (http://www.elecfree.com/electronic/voltage-doubler-with-ic-555/)
Says it has low output current so stick a tranny follower on the end maybe? 18V should make it sound pretty good I would've thought
I run mine off of 12V and as far as box size, I would think it would fit in a BB, though the box mine is in is one I made (inner dimensions of approximately 4.5"x3.5").
Thanxa a lot everyone. I think could build a voltage doubler.
my diefet has a voltage doubler in it with a max1044
Hey Echoes, can you send me some pictures with the insides of your pedal? I want to see how to fit it in the enclosure:
please email: angar666@hotmail.com
Thanx
Jeff
i can't take pictures, but the pcb AND a battery fits very well in a BB enclosure,(and with a voltage doubler!)
In your first post it sais:
Dimensions : 135 x 44 mm
The BB enclosure dimensionds are:
119x93,5x34mm
Are you using a different layout? Because this lay out won't fit.
If you are using a different layout, could you post a link here?
Thanx in advance,
Jeff
i used a breadboard.
I got my PCB through ;D
Looks nice and shiny ;D
Unfortunately I don't have a clue where to put anything; thus follows several evening of research...
Here are all the files:
http://www.techniguitare.com/projets/DieFet/
In paticular:
V1.11
http://www.techniguitare.com/projets/DieFet/PCB-DieFet-Implantation-V1-11.jpg
http://www.techniguitare.com/projets/DieFet/DIEFET-V1-11.pdf
V1.21
http://www.techniguitare.com/projets/DieFet/Notice-DieFET-V1-21.pdf
The topic is here:
http://www.techniguitare.com/forum/viewtopic.php?t=7386&start=0
Thanx, i am starting to build this thing. Probably going to make the enclosure myself.
Thanx for those links, however:
In your first post it sais:
Dimensions : 135 x 44 mm
The BB enclosure dimensionds are:
119x93,5x34mm
Apparently this layout won;t fit in the BB enclosure. Can someone show me a layout which can fit in the BB enclosure if someone has built it that way?
Thanx a lot
One of the other members has a smaller layout, you could PM him. I don't remember his username off the top of my head, but I think it is gkoersman.
THanx
I have another qustion. How should i adjust the trimpots concidering i am using a voltage multiplier from 9 to 18 vots?
Bias the jfets to 1/2 supply voltage.
Hello everyone,
I assambled the pcb yesterday and tested it. However all I get is oscillations.
I measured the voltages and it seems to be all good. I also checked the whole pcb with the schematic and the values are correct and it seems i haven;t made any mistakes during soldering.
This layout has been used:
(http://www.techniguitare.com/projets/DieFet/Layout-DieFet-V1.jpg)
This schematic has been used:
(http://www.techniguitare.com/projets/DieFet/Schema-DieFet-V1.jpg)
I checked with hte audioprobe and the oscillations start just after C11, the side which goes to the treble potmeter. I can hear good aplified and high gain sound on the source of the Q5.
The controlls don't do much. Volume works well, gain is very low. When i put the deep potmeter on 0 I have low gain sound, when I turn the Deep up I get oscillations almost immidiately. The sound I hear is similar to the Fuzz Factory.
I don't know where to look any more, I checked the pcb very thoroughly.
I used a voltage doubler, which gives me around 17,66 volts on the output. I adjusted the trimpots so the transistor recieves the half of the voltage. But the trimpots don;t really do much in my case at the moment.
Has anyone had this kind of a problem?
All the help is appriciated.
I finished it finally. It works.
Here is the sample for those who are interested.
Recorded on a Matamp GTO 120 and a SG tuned to B:
http://www.soundclick.com/bands/default.cfm?bandID=435410
Here are some pictures.
After I paint the enclosure I will post some pic's from the inside:
(http://i642.photobucket.com/albums/uu144/kupervaser/DIEFET/P1010329.jpg)
(http://i642.photobucket.com/albums/uu144/kupervaser/DIEFET/P1010332.jpg)
Quote from: kupervaser on May 24, 2009, 05:51:02 AM
I finished it finally. It works.
Here is the sample for those who are interested.
Recorded on a Matamp GTO 120 and a SG tuned to B:
http://www.soundclick.com/bands/default.cfm?bandID=435410
Nice Diefet you got there. Which version of the Diefet did you build?
I'm still waiting for parts to come for building one (for Version1.2).
Any hints on how you solved some challenges you mentioned before?
:)
Hello, i built the first one: Version 1. from diefet v1.pdf
The one problem that I had was the oscillation in the feedback circuit of the opamp.
There are 2 capasitors on the schematic, one is 0,1uF (C27 on the layout). If you look in the partslist in the pdf files the C27 is 1n. So i followed the schematic and put 0,1uF in it.
The other capasitor in the feedback loop of the opamp (C31) has no number. I don't know why. I just experimented there, i think I have 3,3,nF there at the moment. As soon as I fixed that, the pedal starting working again.
I couldn't have fixed this pedal without help from the people on this forum, freestompboxes.org and a dutch forum www.newtone-online.nl
Good luck and post your questions here.
I still have a problem with my DIEFET.
In bypass I hear oscillation when the gain is past 3 ocklock. It is kind of a peep, like the one you hear in your ears after expoxing them to loud music. It is not loud, but very disturbing. When I turn the gain past 3 ocklock till the max level, i hear changes in the peep, it gets higher. What can be the problem?
This problem doesn's accure when the effect is on. When on, is working perfectly!!
I used this offboard connection:
(http://www.newtone-online.nl/images/standaard.jpg)
Some people on other forums told me this could be the problem in the offboard wiring and advised me to use this one:
(http://www.newtone-online.nl/forum/index.php?action=dlattach;topic=2660.0;attach=2550;image)
Could this be the solution?
That might just work. The reason why is because it grounds the circuit input when it is in bypass. In theory, if you don't put anything into the circuit, then there is nothing for it to amplify and oscillate. Of course, there will be a little that leaks in if your enclosure isn't well insulated. What pcb layout did you use?
I used version 1 on the beginning of this topic. I will connect it the way the second picture shows.
I built using a different layout, so I can't speak to that, but try the grounded input wiring.
I also built it with a voltage doubler based on ICL7660S IC.
You might be getting some leakage from the switching of your voltage doubler into your signal path somehow (maybe through the ground?). Why don't you try it on 9V by disconnecting the voltage doubler and see if you still get the noise.
Here's my try with version 1.21
Parts came this morning, time for pcb printing, etching and tinning...
(http://i93.photobucket.com/albums/l68/NitroBIPS/diefet_pcb_printed.jpg)(http://i93.photobucket.com/albums/l68/NitroBIPS/pcb_tinned.jpg)
Drilling took forever, *note on to-do-list: Buy small drill-press, that portable battery drill is just ::)*
(http://i93.photobucket.com/albums/l68/NitroBIPS/diefet_drilled_pcb.jpg)
Question, what (if anything) connects to the "J1-J7" points on the pcb board? I am using the pcb that DSV has the link to. Mostly wondering about J2-J5.
Thanks
J is for jumper. Check for jumper locations on the layout.
The jumpers are shown on the layout, but these look to be different. On the schematic they are called AJ-2 thru AJ-4 (and also J2 thru J5). They connect to one side of the trim pots. It does not look like I need to connect them on the pcb to get this to work, but wondering what they are meant to do.
Those are probably etched jumpers to connect pins 2 and 3 (or 1 and 2) of the trim pots so that they act as variable resistors for biasing the jfets to one half supply voltage.
I got it to work, but the volume is not there. I have to have the volume turned to 100% to get the same level as when I bypass. I used a audio probe, and it is loud after Q5 source output (point A on schematic). But after C21 or R17 it gets quieter. I know the tone stack is passive and drops it down, but should this boost the level with the volume barely turned? I tried replacing the some of the tone stack pots, and the volume also replaced the IC but none of this did anything. I did not put a jumper in the J2 thru J5 points on the pcb. It looks like these would ground the drain side of the J201's if I did this. Looks like they might be for adding a output jack after each gain stage (according to the block diagrams on the schematic)????
Please help, should the volume on this cause a huge boost to the signal? Does anyone have any voltage readings? (maybe more after Q5?)
Thanks
There is no huge boost, but you can get a decent volume increase by replacing the final 220k series resistor with a jumper. That's just the way it is.
I had to put volume on around 15:00 to have the effect on the same volume as bypass. I buitl version 1.1 though. Maybe you should put that jumper there.
Thanks! I will try the jumper in R25.
I built version 1.21.
On the pdf sheets for this project I see (4) switches on the panel front, I wonder if these are for the J2-J5 jumpers??
Took out R25, no big difference. I bypassed the tone stack, and that made a big difference. It was much louder, and still had the deep control. So, either I have a bad component in my tone stach, or this thing just does not get loud. Which sucks, because to get this at the same level as when bypassed I have to turn the volume on the pedal to max. And this hurts the clipping tone.
Added the jumpers to the J2-J5 spots, no sound at all. Clipped off one at a time, and no sound till all were cut. Not sure what they do, but it does not work with them in.
I think I will put this aside, and start a new pedal. I hope I have something wrong on mine, bad component, or..... Because not to impressed with this pedal. The Krank Distortus Maximus gives about the same gain, and a lot easier to make.
Tonestacks always reduce the volume a lot, that's just the way they are. I always have mine cranked, but don't notice any change to the tone (it shouldn't, because the volume pot is just a voltage divider just before the output). If you really want more volume, you can build a simple booster after it to boost the level.
What one would be a good clean booster?
I disagree you need a booster.
Listen to my sample:
http://soundclick.com/share?songid=7627711
Just get hte tonestackout and start putting it component by component and listening with an audioprobe.
Taking out the tonestack does the same thing to the volume as adding a booster, it's just that using a booster would allow you to still use the tone shaping tools of the tonestack while getting more volume. If you want to have the tone controls, use a booster, if you don't want to use the tone controls, bypass the tonestack. Two totally different ways to get more volume.
What I meant, was get the tone stack out, and start puttin it back in component by component and listen where it goes wrong. This design had to work, it sure does when i built it.
I took out the tone stack, and it has a boost to it. The presence control did not seem to do anything after I took out the tone stack, so I disconnected this also. I added a baxendall tone stack (I have this in a separate box so I can add it easily to any pedal) and no boost in the signal. I have the volume cranked on the pedal, and it is just as loud (or less) when I bypass the pedal. So, this tells me there is nothing wrong with the original tone stack, that this pedal just gets sucked down in output when you add a tonestack to it.
Maybe more voltage? I am using a 9v battery.
Does the presence control need the tone stack? I would like to get this to work, but did not seem to do anything once I removed the tone stack. I am not to up on how the presence control works.
Right now I am happy with that it works, and is very quite for a high gain pedal. Will keep on working with the tone stack later, but could anyone help on answers to questions above.
Thanks
Man, I have no idea, i built mine with a voltage doubler. Maybe you could try this. Good luck
Do you happen to have a schematic for a good voltage doubler?
I will give that a try.
If you use a charge pump, they show you how to do it in the data sheet, or you can check out the +17V, +25V, etc. from One Battery page at Geofex. It uses a MAX1044 chip or similar and 2 caps and 2 diodes. Just make sure your components are rated for the voltage.
I made this one:
(http://www.newtone-online.nl/forum/index.php?action=dlattach;topic=2785.0;attach=2634;image)
But this one has been used by someone else and it works fine:
http://www.circuitsonline.net/circuits/view/138
Good luck
Wow, I had none now I have three to choose from. Thanks!!!!
Finally!!!
I removed both R25, and C32 and works. I know I read this in here before, but I thought I only read to remove only R25. I did not remove C32 before.
Thanks for all your help on this!!
Did you put jumpers instead? Have you also built the doubler?
I did not install the jumpers (J2-J5). I did have them installed, and the pedal did not work. I cut the jumpers one at a time, and the pedal started to work once all of them were cut.
I have a 12vdc power supply and hooked this up, but no big difference. So, I am still running this on 9v battery.
But once I took out the resistor, and cap mentioned by others here the output increased enough.
Hi guys, i've planned to sell mine (see photos on this topic) , it has a voltage doubler in it so you plug 9v and the pedal works on 18v (max1044 inside), it gives more headroom.
(http://img509.imageshack.us/img509/646/spa0793pe1.jpg)
(http://img509.imageshack.us/img509/1900/spa0794cy9.jpg)
(http://img511.imageshack.us/img511/9489/spa0795fn6.jpg)
Contact me by pm if interested.
If I'm feeding it with an 18v power supply, is the Bias suppose to be 6v and the Reference voltage 9v?
Hello guys, did anybody did the 1.21 version... i finished mine and ... it dose not work... i have a lot of hummm when i touch the input the hum is gone... no sound passyng by.
Thoes jumpers need to be conected? When jumer j5 was connected to ground Q5 was hot as hell, i've disconected the j5 and Q5 was normal... could you give me a little kick start for debugging?
Best regards,
Gabriel Tudoran
Analog Sound
Do not connect the jumpers!
Only the ones shown on the pcb.
wold be possible that all tranzistors and IC gone dead from that?
I've disconected the jumpers (besides the one from tone stack and the one under IC... and still no sound.
Best regards,
Gabriel Tudoran
Analog Sound
Looked at the pdf file again, do not connect J2 - J5 jumpers. I asked this question when I built this, and never got an answer. So I hooked up jumpers to each one, and no sound. I started cutting the jumpers one by one and no sound till all where cut. Not sure what the jumpers do.
Also, when I got this to work there was barely any sound till the volume was cranked. And even than it was barely unity gain. Remove R25, and I think C32 fixed that problem (it is somewhere in this tread).
thank you a lot for your tips, i will do that tomorow morning and i will keep you informed. i will replace the tranzistors and IC too just to have a clear ground to start from... hope i didn't trash them all.
best regards,
Gabriel Tudoran
Analog Sound
Removing the cap and resistor as mentioned by caspercody fixes the volume problem and don't connect the jumpers. The v.1.21 is pretty darned awesome if you ask me. I have made a couple and this is my favorite heavy distortion.
The only substitution i've made is the diodes, i've used 1n914... does it make a big difference?
Thank you in advance.
Did you replace the 1N4004 with a 1N914? The 1N400x series are rectifier diodes with a .7V forward drop. Changing that might have an effect.
Battery voltage:6.55v (i know is gone but was the only that i have at this moment)
D S G
q1:3.4 3.4 4.2
q2:3.8 3.8 4.5
q3:3.4 3.4 4.1
q4:5 5 5.77
q5:5.77 5.77 6.55
If i touch the input of C21 i have signale from there to the end and the controls are acting normal.
The AJ4 it seems that it don't do nothing... i have the same voltage reading at any position (i will try to replace it)
Forgot to tell you: for gain pot i used one of 200k, and for volume pot i used one of 1M (but i don't think that is a problem as long as i got the signal passed from C21 to output.
Still no sound, all jumpers cut, except the ones from tone stack and the one under IC socket.
Removed the R25 and C32 and relace them with a jumper.
I'm running out of soultions :|
Best regards,
Gabriel Tudoran
Analog Sound
I think the layout is a little crappy... at least for version 1.21'.... in the picture that come with the schematic the FETs have different orientation... at least for Q5 and has a jumper (not reffering to j2-j5)... i will try to get a closer look.
Best regards,
Gabriel Tudoran
Analog Sound
I do not remember if I rotated the Jets or not.
But the jumpers AJ2-AJ4 I have no idea why the are there. They seem to ground out the drains of the Jets if you install them.
But I know that pcb for v1.21 works. And the only thing I did different is leave out the jumpers, and remove the resistor and cap (but like I mentioned I do not remember if I had to rotate the Jfets). Look at the pin layout for the Jfets you are using,and compare them to the pcb layout.
Or make a audio probe, and dig into the build. I can not counthow many times I needed to use a audio probe.
Done... for version 1.21 rotate the FETs with 180 deg.
Best regards,
Gabriel Tudoran
Analog Sound
I admit that I didn't use the layout posted. I used one made by garrett and it has worked both times quite well.
Good to hear you got it to work.
:) Thank you for all your help with this one ... i was in a dead end. Anyway is a good sounding pedal... not bad at all, in fact i found it a little more meaner then Dr. Boogie.
Best regards,
Gabriel Tudoran
Analog Sound
Hi guys, this is my recording with Diesel Fet Simulator:
http://analog-sound.com/forum/index.php?action=dlattach;topic=48.0;attach=73
Best regards,
Gabriel Tudoran
Analog Sound
i have a 12V 2A power supply lying round that could be used, will it work fine with the diefet 1.21
or will it blow any components such as the diode on the 12V input?
I built mine with the 18 volts voltage doubler like many others on the forum.
yea i read about that. am only asking just cause the supplys new that i have dug out. will my 12V 2A supply blow the 1n4004 diode?
every diefet schematic i look at the diode seems to change from 1n4148 - 1n4001 - 1n4004
The 12 volts is less than the voltage others have used on this poject, so that part will not hurt the circuit.
The 2 amps portion, the circuit will draw what current it only needs. You are not actually pushing 2 amps into the circuit.
anyone have the eagle layouts for the diefet 1.21 ? really could do with them
Hello there: i've build the Diefet with my own layout based on the 1.2 version.
i've got some problems:
-a massive drop of volume
-presence don't do anything
-tonestack work bad : if i lower bass and mid the pedal become mute.
for the volume i've removed R25 (220K) and lowed R19 (120K) to 22K and now the volume is pretty good, i have to remove C32 (100pF) too to raise more the volume as i read here (thanks Caspercody).
for the presence i've changed the pot value from 25K to 100K, the action now is a little better.
for the tonestack i've modified the mid pot wiring like the Dr.boogie: C24 (1nF) removed, C22 (22nF) to mid pot central, pin 1 of bass and pin 3 of mid connected togeher, now the tonestack work good but i want to know: is this an uncorrected schematic bug or i'm the one with this problem?
p.s. sorry for my bad english
UP
Does anyone got the vero layout for version >1.21 ? I swear i saw it this morning but I can't find it now.......
Does anyone have a schematic on the 1.21? I cant find it. Also, I am looking for someone to build this for me. I will pay good money, please get back to me. Or at least a link to the newest schematic.
A link for you:
http://9giga.sfr.fr/n/50-17/share/LNK20364db6a54e98451/
Finished mine too(tweaked it a bit,changed a few parts and one pot value, and now it's GREAT!)
Ballzy metal chunk :icon_twisted:
I'm running mine on 12 V, 6V bias but 10.6-11 V bias at Q3 was pure WIN!
No more flubby destroyed sound when using gain at any setting(well, almost)
http://img694.imageshack.us/img694/2594/1002508h.jpg
Do you have any sound clips?
Razvan S, could you post a schematic of the changes you made? Or what values you changes?
Thanks
Rob
http://youtu.be/yqugBxbg1D4 This my Pedal my own built a Diezel Amp Emulator.. used by Metallica, Creed ETC. if you want to see my demo
Does anyone know if you buy the PCB for this pedal?
Hi,
I have found diezel vh4 schematic on some russian forum,
if someone needs it.
http://depositfiles.com/files/b4yh7epe3