VFE Fiery Red Horse  [traced]

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VFE Fiery Red Horse

Postby drbob1 » 04 Jan 2013, 03:52

Interesting overdrive with dual "diodes in the feedback loop" op amp gain stages, including one setting where both op amp stages have single diodes for very asymmetric clipping. Sounds kinda cool and especially cool that he describes the circuits and shows shadow masks and gut shots on the website: http://www.vfepedals.com/fiery-red-horse.html

Ballsy move, cool guy!
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Re: VFE Fiery Red Horse

Postby coldcraft » 04 Jan 2013, 14:01

Quite possibly the best Muff-style Fuzz for the money! VFE pedals are a great buy!
Black Dynamite wrote:you need to shut the fuck up when grown folks is talkin.
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Re: VFE Fiery Red Horse

Postby mmolteratx » 05 Jan 2013, 09:09

What? There are no op amp stages in that pedal... It's very clearly a Muff.
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Re: VFE Fiery Red Horse

Postby roseblood11 » 05 Jan 2013, 11:56

Sure, he confirms that one the website.

Many interesting pedals there, just variations of well-known circuits, but very usefull ones.
I'd be interested in schematics for many of them, esp. the Distortion3 (based on DOD250/Distortion+) and the Pale Horse.

One thing I don't understand about the Pale Horse: I can't see any germanium or schottky diodes near the mosfets. How can the mosfet clipping work then? Or is it just clipping of the body diodes?
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Re: VFE Fiery Red Horse

Postby B3ar » 05 Jan 2013, 18:10

roseblood11 wrote:One thing I don't understand about the Pale Horse: I can't see any germanium or schottky diodes near the mosfets. How can the mosfet clipping work then? Or is it just clipping of the body diodes?


You can wire mosfets like diodes. This is probably best noted in versions of the Fulltone OCD.
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Re: VFE Fiery Red Horse

Postby roseblood11 » 05 Jan 2013, 19:23

Sure, but all you'll hear is the clipping of the body diodes, which sounds almost identical to any other silicon diode...
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Re: VFE Fiery Red Horse  [traced]

Postby VonRutter » 23 Dec 2014, 21:48

drbob1 wrote:Interesting overdrive with dual "diodes in the feedback loop" op amp gain stages, including one setting where both op amp stages have single diodes for very asymmetric clipping. Sounds kinda cool and especially cool that he describes the circuits and shows shadow masks and gut shots on the website: http://www.vfepedals.com/fiery-red-horse.html


Here is the schematic of v2 Fiery Red Horse for anyone who is interested. It's a BMP-style fuzz circuit, with variable power from 3V to 16V (or higher if you plug in 12V or 15V power supply), plus active tone stage and variable compression in the 2nd distortion stage. The charge pump circuit is built on a simple 555 timer chip.

Image
Owner & designer at VFE Pedals. Please email me directly at peter@vfecustom.com if you need a quick response.

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Re: VFE Fiery Red Horse

Postby VonRutter » 23 Dec 2014, 22:17

roseblood11 wrote:I'd be interested in schematics for many of them, esp. the Distortion3 (based on DOD250/Distortion+) and the Pale Horse.


Here you go! FYI, the Pale Horse has a charge pump that is not pictured. so the power rails are +9V and -9V.

Pale Horse schematic:
Image

Distortion3 schematic:
Image

roseblood11 wrote:One thing I don't understand about the Pale Horse: I can't see any germanium or schottky diodes near the mosfets. How can the mosfet clipping work then? Or is it just clipping of the body diodes?


Each mosfet is configured in a way that puts the body diode & Vgs saturation in parallel (and reverse polarity). The two mosfets are then put in series (also in reverse polarity). The result is a very high clipping threshold - around 2.7V on average. That's why a charge pump was used, to give the op amp the headroom needed to drive this configuration. It also lets the Pale Horse get LOUD!
Owner & designer at VFE Pedals. Please email me directly at peter@vfecustom.com if you need a quick response.

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Re: VFE Fiery Red Horse

Postby D-Day » 24 Dec 2014, 20:37

Whoah thanks Peter!
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Re: VFE Fiery Red Horse

Postby hasanova » 06 Sep 2017, 15:51

Here's the schematic of VFE Fiery Red Horse v2, with no values...
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Re: VFE Fiery Red Horse

Postby roseblood11 » 10 Sep 2017, 10:57

Can anybody upload all the other schematics again, please?
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Re: VFE Fiery Red Horse

Postby hasanova » 11 Sep 2017, 16:11

Pale Horse
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Re: VFE Fiery Red Horse

Postby hasanova » 11 Sep 2017, 16:13

Distortion3
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Re: VFE Fiery Red Horse

Postby hasanova » 11 Sep 2017, 22:29

If you're interested in more schematics check out this thread:
viewtopic.php?f=7&t=28265&p=264287

Or VFE website: support - discontinued pedals:
http://vfepedals.com/discontinued.html
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