Fortin Zuul  [traced]

General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.

Re: Fortin Zuul

Postby Silverhair » 12 Aug 2019, 19:23

caspercody wrote:I bought mine from PedelPCB

He doesn't have them anymore
Posts: 3
Joined: 12 Oct 2017, 00:44
Has thanked: 1 time
Have thanks: 0 time

Re: Fortin Zuul

Postby Studio Ost » 10 Nov 2019, 17:26

Being in need of a noise gate I compared the Decimator and the Zuul seeing that the latter has fewer parts and better critiques I wanted to have a go at it. The THAT4301 seems to be obsolete and replaced by the THAT4305, so I modified the schematic on basis of this transition document ... -guide.pdf
The THAT4305 is only available in QSOP package, so it will be PITA to hand solder it.
The internal OPamps need to be preplaced by external ones. As the circuit needs 5 OPamps I chose a TL074 and a TL072 leaving one free which I probably will incorporate as a splitter to forgo the necessity of an external splitter for the “key” input.

Studio Ost
Posts: 3
Joined: 22 Jul 2019, 10:35
Has thanked: 0 time
Have thanks: 1 time

Re: Fortin Zuul

Postby caspercody » 11 Nov 2019, 17:48

PedalPCB right now has limited stock of the 4301
Resistor Ronker
Posts: 335
Joined: 15 Jul 2009, 15:34
Has thanked: 31 times
Have thanks: 50 times


Return to Boutique Stompboxes dissected...

Who is online

Users browsing this forum: fullofempty, jalmonsalmon, oliveralling and 8 guests