Sorry to resurrect an old threat, but I got one Wave Cannon MKI and decided to trace it as it hadn't been done until now. I unsoldered all resistors and measured them to be sure of their values. Diode has also been unsoldered to be checked. IC is unknown, but the schematic is very similar to that of...

Sorry to resurrect an old thread. I just stumbled on it,
I happened to have a Revelation Superbass and I traced it back then.

It's based on a stripped Big Muff,

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.

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_...

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.

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 d...

Tracing completed

Well I don't know if it can be of any help, but I got a clone with a few mods, that John Kallas, aka Johnk here built for me.
It's built on breadboard and I entirely traced it.

Today I found some time to begin to tear it down.

All pots are A1M except for the Mids which is C100K.

Here are some pictures

Here is my custom Olde Dirty Bass

Yes indeed. It's an OCD modded for bass.
I have one custom etched. I should look inside and trace it.

BTW here it is next to one of others Nick's awesome fuzzes

IMPORTANT UPDATE The first dual opamp is NOT a TL022, it is definately a TLC (rail to rail opamp) NOT TLO, from the photos posted earlier in this thread. My guess is it is a TLC2262 device. ALSO There are 3 different types of LM386N power opamps: The LM386N-1, which is the one used in the Peach fuz...

UNIVOX SUPER FUZZ
Redrawn version in Eagle

I just traced my Broadcast 24V. I unsoldered all diodes on the power supply board to be sure of the type. I made an true to the original vero layout and measured the voltages on both transistors. Hudson Electronics Brodcast 24V, PG Edition_vero layout.pdf If you have any questions feel free to ask....

i drew up a schematic for my 9V version today. it's the one with the trimpot for the high gain. [ Image ] I just traced my Broadcast 24V. I unsoldered all diodes on the power supply board to be sure of the type. I made an true to the original vero layout and measured the voltages on both transistor...

I decided to put an op-amp "wrapper" around the standard BMP clipper stages, and add my favourite tone control for real versatility. As drawn, it sounds really good, but has more top end than a normal BMP because there's no input loading effect. The capacitor in the feedback around the fi...

Intripped wrote:nice work!
just a little note:
in your drawing, 2N7000 pins are named wrong

Thanks for your comments. And yes I have just seen my mistake. So here is the corrected layout:

Hi all, I own an OCD #84590 with a pcb revision 1.4. Wanting to know how it works, I traced the complete pcb and made a drawing out of it. Here are a few pics and my drawing. It might be of some interest. IMG_0804_small.jpg IMG_0805_small.jpg IMG_4523_small.jpg IMG_4524_small.jpg OCD_pcb-layout-1.4....

Box etched, painted and build completed !

It definitely sounds great on bass!

Gutshot
https://www.dropbox.com/s/n4i9xblz33h3z ... 8.jpg?dl=0

Front
https://www.dropbox.com/s/wahyui1a4poz6 ... 5.jpg?dl=0

great ! now we´re done. thanks picassochild. so that mystery resistor is 2K2 (original: 4K7). here´s the final schem: bsswt rev1.jpg cheers, lohstah Hi all, Here a pcb (with the original layout) for those wanting to etch. It is based on the above pictures and schematic. :thumbsup The relay (AXICOM ...