Beautiful graphics, Joe! I like your diode idea in the Vulcan. Will have to digest it some more.

Nice!

Doug

Another step in the evolution of great ideas and sounds with an equally cool web site.

I wouldn't expect anythting less from Joe.  :wink:

Hey the diode compression thing sounds neat. I gotta try that! So much cool stuff, so little time/money to try it out!

Man oh man I loke your site... can't waut for more stuff!!!

Im about to sub in fixeds for that 1 meg set at like 3/4, and tag another one across the top one for 'adjustments'

Nice!!

... very cool Joe !

I enjoy reading about your radical explorations in the "dynamic" domain .. thanx for sharing that diode compression technique !

cheers, jc

i talked to joe sunday, he's cool as always!
  joe said the vulcan is his new favorite OD.
a true gent,
   peace,
        - tom

OK Joe, as standard procedure you need to compare and contrast each new distortion you come out with to the old ones, so we will know what we are missing.  Thanks.  

Thanks for the nice comments!

The Vulcan gain stage has a sound & feel I couldn't get with the Blackfire. All I can say is I thought it was more "real" sounding. When the crappy input dynamics of the BJT are defeated, the thing sounds good!

The cool part is the diode improves the JFET, too. One downside to this is the low-gain of the JFET, a high-gain overdrive requires like 5 stages. The other caveat is that 2-resistor biasing is required, so that the input diode is forward-biased.

I should probably mention one of the reasons I try to share. People tell me to market this or that, and I should keep it secret, get a patent, etc. My personal opinion is that to claim ownership to something god gave you is a serious blunder. If someone wants to steal, it won't be stolen from me.

-Joe

would this diode compression reduce clipping in an op amp ?

C

I added a "downloads" section to my home page, there you can find a pcb for the vulcan.

I have not tested it yet, so please let me know how it goes if you use it.

Thanks Joe for sharing with us!

I forgot one thing:

Joe, any advice/mod for us hot humbucker users?  :twisted:

Thanks in advance.

I should probably mention one of the reasons I try to share. People tell me to market this or that, and I should keep it secret, get a patent, etc. My personal opinion is that to claim ownership to something god gave you is a serious blunder. If someone wants to steal, it won't be stolen from me.

-Joe
 joe you never cease to surprise me!!!! heavy stuff.
     you're so cool,
           peace,
               - tom pollock

I'm curious.  In the context of my 1973 post, it doesn't appear the Joe's distortion circuits are using any new parts, are these new applications for old circuit designs, or new circuits?  In other words, these circuits could have been used several decades ago, if we had known about them, or they had been invented???

I am using a GE Black Fire stage that sounds really nice.  I have also used it with a GE/Mosfet combo.  Future Primative  

What happened to the Black Fire 2?

How about substituting 2N5088? any noticeable issues?

Any PCB layout coming for this Vulcan?

Quote from: GringoI added a "downloads" section to my home page, there you can find a pcb for the vulcan.

I have not tested it yet, so please let me know how it goes if you use it.

Thanks Joe for sharing with us!

:?

Quote from: Joe DavissonI should probably mention one of the reasons I try to share. People tell me to market this or that, and I should keep it secret, get a patent, etc. My personal opinion is that to claim ownership to something god gave you is a serious blunder. If someone wants to steal, it won't be stolen from me.

-Joe

Good attitude Joe!  I don't say that because  :twisted:  (hahaha) ~I get the benefit of great FX for FREE  :twisted:  :twisted:  :twisted:

...but, because I also hold a similar view about things that I come up with.  It looks like, in the end, if I want to sell my stuff and I can show from my notes and dated records that I was the original, it is less likely that I will get into trouble for distributing and/or selling my own stuff, even if somebody else DOES try to patent it (from my understanding).  Besides, how can somebody claim common knowledge for themselve?  If it's posted on the Web and many people view it daily, who can claim it for themselves?

But, like you said, claiming ownership to something God gave you is a serious blunder...and I guess the risk of somebody else "stealing" it and claiming ownership of it is worth the benefit it has contributed to the "honest hobbyists who just want some unique sounds" DIY community.

Keep up the good work Joe!  I know you've been showered with the blessings of us all, need I say more?

do you think it's possible to use germanium trannies in this or the blackfire circuit with proper bias?