Saturday 30 December 2023

Umbrella Company Mayonaise Fuzz

 A japanese boutique Big Muff variant with some bell and whistles. The 1979 switch adds a different stexture and aggression to the distortion. Doping switch is basically and Mid/Scoop tonestack switch. And the Mode switch (which is an internal DIP switch in stock units) toggles between two values for both clipping caps which adds some bass i one postirion. The 33k and 24k series resistors are replaced by one 56k resistor due to lack of space on the board.

Schematic is avaiable HERE.



Wednesday 27 December 2023

Lastgasp Art Laboratories "46" Sooperfuzz

 Traced by Deadend Fx.

I opted for a layout for the stock circuit without the three additional Deadend Fx controls. Note that there is some intended noise is coming through with the Gain pot is dimed which is perfectly normal, it a part of the design. 

Schematic is avaiable HERE.



Saturday 23 December 2023

Friday 22 December 2023

Funny Little Boxes Skeleton Key

 This is supposed to be a QOTSA in a box. According to demos online, this and an amp on the verge of breakup will almost get you there...

The 470uF power filter cap is a bit overkill, you can use a 100uF instead.

Schematic is avaiable HERE.



Thursday 21 December 2023

Creepy Fingers Regulus 8 Fuzz

 Long time, no see. No layouts in December so far for numerous reasons. For the most part, things have been crazy busy over here, mostly with fun stuff. And I needed a small break from pedal building in general... And I felt a bit resenment that Google and/or Firefox that can't fix the bug that block me from comment on my own blog (I still can't)... So I just needed to drop the rock for a while. 

Good thing is there have been lots of interesting schematics floating up lately so there is a few layouts to come the nextcoming days. First up, Creepy Fingers take on OS Mutantes/Regulug VIII Fuzz. It has some interesing tweaks and mods compared to the original. It has some oddball silicon transistors which doesn't give a match with the common types via an equivalent search so sockets is your friend here, I suppose. 

Schematic is avaiable HERE.



Thursday 30 November 2023

Electro Harmonix The Worm / Madbean Charlatan

 A vintage big box The Worm with some useful improvemnts and mods by Madbean. The power section have been reworked by a voltage doubler and a voltage regulator for 9v to 15v operation. An internal volume trimpot is added. And the unknown original vactrols is replaced by a trio of LDR/LED pair.

Schematic and more information is avaiable HERE.


 


Sunday 26 November 2023

Sovtek MIG 100H

 Another generous contribution by Sebastian, this time a Sovtek MIG 100H amp emulator!

The Acorn MIGFET post inspired me to whip up this layout for a version of the MiG 100H, which is more like a hot-rodded JCM800 than the pseudo-Plexi MiG 50. An interesting variation in its own right.


I've not built this myself yet, since I'm out of 100k trimmers and A1M pots, so due diligence is encouraged. I've attached the amp schematic for scrutiny. The layout follows the circuit pretty much 1-to-1 until the phase inverter. One half of the phase inverter is used, then the output stage is pilfered from the Menatone Foxy Brown (I've found it great in various AIAB builds, so it should do the trick here too). The master volume is moved to the end of the circuit.

Like the JCM800, the MiG 100H has two channels with separate inputs, the lower-gain of which skips the first stage of the preamp. This layout has a footswitch to toggle between the two channels for (hopefully) added utility.
 


 
 

 

Amptweaker Tight Fuzz

 Schematic is avaiable HERE.



Amptweaker Tight Drive

 Schematic is avaiable HERE.



Stamps Amplification Drive-O-Matic

 Simply a Rat with some odd component value choices, two switchable gain controls with their own RC filters and a slightly reworked filter control. 

Schematic is avaiable HERE.



Saturday 25 November 2023

Catalinbread Octapussy

 Schematic is avaiable HERE.



Catalinbread Silver Kiss Mk.2

 Schematic is avaiable HERE.

Note that the 4,7uF caps is per original Silver Kiss spec. The 1uF film caps is suggested by Aion Fx as replacements.



Xotic SL Drive

 Schematic is avaiable HERE.

10uF cap is stock SL Drive value, 1uF is suggested value by Aion Fx.




Tuesday 21 November 2023

Friday 3 November 2023

Madbean Mugshot

 Booster section from a Moog MF-104m Delay

Schematic is avaiable HERE.


 


Nobels DT-SN Distortion Special

An old request that I thought was a joke. But here it is!

The schematic for this monster is avaiable HERE.



Saturday 28 October 2023

1981 Inventions LVL

 Schematic is avaiable HERE.

 

Original buffered bypass version

 
...and a requested true bypass version.
 

 



Sunday 15 October 2023

BJFe Emerald Green Overdrive

 Four resistor value changes and an added resistor transforms an Emerald Green Distortion to an Emerald Green Overdrive....

Schematic is avaiable HERE.



Friday 6 October 2023

Smallsound / Bigsound F*ck Overdrive

 This one has been on many peoples list for years...

Traced by Deadend Fx and the schematic is avaiable HERE.

A "Sag Depth" pot is the only mod but if you want to build it as the original, just replace the pot with a 1,5k resistor.

Verified by Tom.


 



Thursday 5 October 2023

Catalinbread Antichton

 Schematic is avaiable HERE.



Silent but alive...

 My Blogger account comment function is messed up and has been for quite some time. I still can admin the blog as usual but I'm dead quiet... Don't want to give the impression of being snorky or ignorant. I really appreciate all the verifications, visits and comments!😊

Tuesday 3 October 2023

Death By Audio Assault System - Op Amp channel

 ...and here is the op amp channel.

Schematic

(might to a complete layout for both channels if there is interest. It will require some extra offboard wiring due to two separate bypass switches and an order switch....)