Fortin Zuul  [traced]

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Fortin Zuul

Postby caspercody » 18 Jul 2018, 15:19

Does anyone have any information on how this works?

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Re: Fortin Zuul

Postby plush » 18 Jul 2018, 16:06

caspercody wrote:Does anyone have any information on how this works?


Same as ISP Decimator G-string does.
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Re: Fortin Zuul

Postby caspercody » 18 Jul 2018, 21:19

In the Youtube videos of comparing the two, the Zuul seems better at reducing noise.
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Re: Fortin Zuul

Postby hyrk » 20 Nov 2018, 17:25

No news ?
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Re: Fortin Zuul

Postby Optical » 21 Nov 2018, 00:15

I thought he must have been using an optofet, but people are still complaining about ground loops so I guess not.
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Re: Fortin Zuul

Postby plush » 21 Nov 2018, 10:26

Optical wrote:I thought he must have been using an optofet, but people are still complaining about ground loops so I guess not.



What is this all about?
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Re: Fortin Zuul

Postby pinkjimiphoton » 03 Dec 2018, 03:13

the isp g string is a killer circuit if ya use it right. its the ONLY noise gate i've ever found ya can put first in line... even before a ge fuzzface.

never had any issues with ground loops or anything at all, but i built mine from a pcb i got from eufx or something like that.
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Re: Fortin Zuul

Postby DevouredDeth » 02 Jan 2019, 22:29

Well I think the Zuul is now DIY available https://www.pedalpcb.com/product/muzzle/ . Curious how this compares to the decimator.
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Re: Fortin Zuul

Postby J0K3RX » 28 Jan 2019, 19:16

I only glanced at the two but it looks allot like the gate in the Marshall 2203KK Kerry King signature JCM800.
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Re: Fortin Zuul

Postby Optical » 28 Jan 2019, 21:25

That wouldnt be surprising, everything Fortin does is a copy of something smothered in hype
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Re: Fortin Zuul

Postby caspercody » 28 Jan 2019, 22:04

I did buy the PCB from Pedal PCB, and it works great.

Question about the key input. Should I use a buffered input to the key? I am making a splitter, and not sure if it is as easy as connecting (3) jacks together, or if I will need a buffer or signal booster on either of the (2) outputs?

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Re: Fortin Zuul

Postby bmxguitarsbmx » 30 Jan 2019, 02:31

Optical wrote:That wouldnt be surprising, everything Fortin does is a copy of something smothered in hype


I was thinking the same thing. Maybe the KK gate, or the stock THAT app note. I have briefly seen the guts of a ZUUL, and they don't line up part wise.

Caspercody! Do you know? Did you get a scheme with your board, or did you paint it by numbers?
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Re: Fortin Zuul

Postby caspercody » 30 Jan 2019, 02:53

Paint it by numbers. He usually will have the build docs online which usually includes a schematic, I do not see it net. He also has the Fortin 33 board on his site.
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Re: Fortin Zuul

Postby Optical » 30 Jan 2019, 04:13

The grind and 33 are both the TC integrated preamp with the RG Keen 33V charge pump

Yes the key input should be buffered. Unless you have active pickups then it probably doesnt matter
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Re: Fortin Zuul

Postby bmxguitarsbmx » 30 Jan 2019, 04:34

Yeah man. Music electronics is a wasteland of un-original copy cat bs. It's a shame. Fortin is one of my favorites too. I would love to see a unique circuit before Digital Modeling buries what could have been an amazing industry.

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Re: Fortin Zuul

Postby guiddruid » 24 Feb 2019, 16:53

Guts; https://imgur.com/a/GSyJqGp

The 3 ICs match this similar device - https://www.pedalpcb.com/product/muzzle/

Could do with ground loop isolation on the key input. I have the key input connected via a Suhr buffer, otherwise I get buzzing with the Zuul connected in the effects loop of my Hotone Heart Attack. Key output/pass-through would be nice too..

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Re: Fortin Zuul

Postby caspercody » 24 Feb 2019, 21:42

I bought and built the PCB from PedalPCB and for the key all you have is the tip connected to another switches tip on the jack.
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Re: Fortin Zuul

Postby guiddruid » 21 Apr 2019, 16:04

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Re: Fortin Zuul

Postby plush » 21 Apr 2019, 19:39

Wait, what's the point of doing this?
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Re: Fortin Zuul

Postby Manfred » 21 Apr 2019, 21:06

IMO to cause confusion or maybe to make a unpolarized capacitor in the case of two electrolytes or tantals,
but the capacitors on the PCB layout appears as foil capacitors.
Here the equivalent circuit:
MuzzleDetail.jpg
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Last edited by Manfred on 21 Apr 2019, 21:41, edited 2 times in total.
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