Wampler - Leviathan Fuzz

General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.
Post Reply
User avatar
EdGrip
Information
Posts: 40
Joined: 31 Aug 2011, 19:16
Has thanked: 5 times
Been thanked: 6 times

Post by EdGrip »

All of Brian's stuff is interesting. Has anyone got one of these that we can crack into to have a look?
If not, I might be able to buy one in the next few weeks.
Because, y'know,
...FUZZ.

- Ed

User avatar
Biochemist
Information
Posts: 29
Joined: 31 Jan 2012, 14:46
Has thanked: 43 times
Been thanked: 2 times

Post by Biochemist »

I'm quite curious about this one too and I'm still looking to find one for cheap locally, which so far hasn't been fruitful.

User avatar
mrkaploca
Breadboard Brother
Information
Posts: 141
Joined: 23 Nov 2008, 15:45
Has thanked: 15 times
Been thanked: 12 times

Post by mrkaploca »

I bet it's opamp based... :D

User avatar
dv8r601
Breadboard Brother
Information
Posts: 89
Joined: 08 Oct 2011, 07:28
my favorite amplifier: Peavey ranger 212
Location: Mississippi
Has thanked: 391 times
Been thanked: 20 times

Post by dv8r601 »

Here's a screen shot from Brett Kingman's demo video
Attachments
screencap
screencap

User avatar
Nocentelli
Tube Twister
Information
Posts: 2222
Joined: 09 Apr 2009, 07:06
Location: Leeds, UK
Has thanked: 1152 times
Been thanked: 954 times

Post by Nocentelli »

My guess is a transistor boost like the fat side of Velvet fuzz into a BMP IC big muff-like inverting clipping stage with the single clipping pair followed by a baxandall EQ. Perhaps the upper dual opamp is for buffered vref, it looks like only one half is used.

<edit>Having looked again at the number of caps, it's maybe a bit more complex than i have painted it. Would love to see this traced, especially since it is no longer made (unicorn Ge diode shortage?).
modman wrote: Let's hope it's not a hit, because soldering up the same pedal everyday, is a sad life. It's that same ole devilish double bind again...

User avatar
dv8r601
Breadboard Brother
Information
Posts: 89
Joined: 08 Oct 2011, 07:28
my favorite amplifier: Peavey ranger 212
Location: Mississippi
Has thanked: 391 times
Been thanked: 20 times

Post by dv8r601 »

Maybe a jfet buffer into a 2 band gyrator between a hard clipping non inv stage and a flat booster? Or perhaps the jfet is last and its set for a slight boost as opposed to a buffer. I have no idea. I think ill buy one and trace it , because at this point its borderline obsession .

Post Reply