Dunwich - Wizard Fuzz

V1nce69 · Post by **V1nce69** » 17 May 2021, 20:18

Hi all,

Here are some pictures of my personal Dunwich Wizard Fuzz #85. As it's quite a rare and now unobtainium unit, I decided to trace it.

I carefully took it apart, unsoldered all components, measured the resistors with a multimeter, measured the transistors with Atlas DC55 and noted everything down.
Then I traced it using Illustrator and drew a schematic on Kicad. I made sure my schematic doesn't contain any error, as I redid the original pcb layout on Kicad.

P.S.: there was a small mistake in my tracing. Gain lug 1 should go to ground. I made the correction and updated the files

There you go:

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V1nce69 · Post by **V1nce69** » 18 May 2021, 08:19

I will gladly share the kicad files if someone is interested. I still need to create a project specific library for the symbols and footprints I used, so that it can be shared.

Post by **audioguy** » 18 May 2021, 17:22

this looks amazing! I would love to build one, I've never used kicad but I could give it a go

V1nce69 · Post by **V1nce69** » 18 May 2021, 18:52

Here are my Kicad (version 5.1.9-0-10_14) files. I created a zip file in which are all documents you need in Kicad.
Just extract the zip file and put the extracted folder directly in your Kicad projects folder.

files corrected. Gain 1 now goes to ground, as it should

Dunwich Wizard Fuzz_KiCad files_corrected_20210519.zip

Post by **audioguy** » 19 May 2021, 10:19

awesome, thank you very much!!

V1nce69 · Post by **V1nce69** » 19 May 2021, 14:56

I had a mistake in my schematic/tracing: lug 1 of gain pot should go to ground.
I corrected both the images in my first post and the docs in the zip file.

EmmG · Post by **EmmG** » 25 May 2021, 16:36

Vince, thanks for such a great tracing job! This is is a really heavy doom fuzz.
I built it using this vero layout:
dirtboxlayouts.blogspot.com/2021/05/dunwich-amplification-wizard-fuzz-big.html
https://dirtboxlayouts.blogspot.com/202 ... z-big.html

Alamondm · Post by **Alamondm** » 13 Jun 2021, 13:05

@vince69. Thank your time on this. I can verify your work. It works 100%. This is an awesome fuzz. Permanent home on my board.

cniers13 · Post by **cniers13** » 03 Apr 2022, 04:03

@vince69, would you be able to make a PCB for the dunwich da120? That would be awesome if you could!

vergadehule · Post by **vergadehule** » 30 Nov 2022, 00:09

I suppose that the bottom layer of the pcb is to ground.... Do you maybe know what's connected to the top layer ? Thanks

Fuzzician · Post by **Fuzzician** » 05 May 2025, 03:04

Sorry for the necroposting, but I bought a set of 3 of V1nce69's PCB on OSH park and received them last week. I'm building a parts cart online right now, but am having one helluva time trying to source the Alpha 1P12T rotary switch used in there, specifically as to which model. I've learned Alpha's model # "syntax", so to speak, and narrowed it down to two similar models, one of which is on backorder everywhere in North America it seems (I'm from Canada). The other is however available on Mouser. To the best of my knowledge, it would be a non-shorting (break before make) switch.

So we would have either:

SR2512F-0112-19R0B-E9-N-W-159
(Looks an awful lot like the one in the pictures, with its metal bracket; unsure about pin layout vs. one on switch PCB)

and

SR2612F-0112-21R0B-D8-N
(Has plastic-only, closed body, seems to have same pin layout as the one on the switch PCB)

My best guess until now points towards the SR2512, as it also has a knurled metal stem, vs. the SR2612. Anybody here can confirm? You would be my lord and savior!!

EDIT: Ok so... while randomly taking a closer look at the schematic, I noticed the mention "CK1049" on top of the rotary switch board part...which I recognized as a Lorlin part number cuz I must've spent at least 6 hours trying to source/figure what make/model that damned switch was. So I guess the pin layout on the PCB must be for said switch! Feel free to correct me but I'll go ahead and order some of those!

Fuzzician · Post by **Fuzzician** » 09 May 2025, 16:48

Ok so, to anybody who would want to build this from the PCB project on OSH park located here:

https://oshpark.com/profiles/V1nce69

Do NOT purchase 1590BB enclosures as stated in the notes!! It's completely wrong! The original enclosure is a 1590DD!!! I didn't verify anything (my bad) and just bought 3 enclosures based on this note only to find out they're as wide as the PCB is, if you factor in enclosure wall thickness. With off-board pots, the 12 position PCB and a 3PDT switch it's impossible to fit it in a BB. Even the new layout from Magic Pedals, which has on-board pots, requires an enclosure bigger than this, most likely the 1590XX.

https://static.wixstatic.com/media/019c ... c2~mv2.png

Here are the boards dropped inside an Abominable Electronics Hail Satan Deluxe for size comparison. It uses a 1590XX. Would be doable, but still a bit tight with off-board pots. PCB would have to be raised to prevent contact with 2 pots that would have to go underneath main PCB.

And the boards on top of a 1590BB for comparison.

Dunwich - Wizard Fuzz [traced]