Saturday, 22 November 2025

Jürgen Haible Wasp CV Filter LM13700 version

 Chris Stelloh have been playing around with Jürgen Haible Wasp CV Filter and sent me two verified layouts..

In hi sown words:

 I had a chance to build up that LM13700 version of the Wasp Filter and found that using a much different value of potentiometer for the cutoff control made for a better filter sweep.

This one is also verified. It contains a level pot that cuts or boosts the CV level. The oscillation switch implements the modifications that people have come up with for the Doepfer A-124 - which is a module that is basically a wasp. Albeit with some minor part value changes, as well as a HEAVILY modified CV and frequency/cutoff section.


 

 

Friday, 1 August 2025

Animals Pedal Major Overdrive

 Schematic is avaiable HERE.


 

SiB! Electronics Mr Echo Delay

 Another trace, layout and verification by Jordan Fontaine. A PT2399 based delay but it has a trick upon its sleeve that I haven't seen elsewere, the Slam switch.

 Schematic is avaiable HERE.




 

Saturday, 12 April 2025

Sprinklesounds Mot(not)onous

 Here is a contribution from Jordan Fontaine, a modified Mid-Fi Clarinot)

 

Modded Midfi Clari(not)


This was a fun project to delve into. I certainly didn’t stay true to the short delay, tape warble aesthetic. The delay still does that sound but now it can run wild too. Very versatile now for rockabilly, dub, shoegaze etc.


Delay time is extended and feedback added to extend beyond a single repeat. 

The trimmer sets the threshold for runaway repeats to taste.

I borrowed the blend for Midfi’s Pitch Pirate so there are more sounds available here. 

If you have runaway repeats happening and dial the blend close to dry it almost sounds like a scratchy record under your playing.

The fuzz control from the original has been removed to add to the ‘clean’ sound of the pedal. Although the longer repeats will add noise and clip as well. 

Where the crazy comes in is the external mounted LDR. The second footswitch engages the LDR and affects the Delay control as you interfere with the light in front of it. The Offset control allows for the light to make dramatic or subtle changes to the time. This is easily omitted if you're not interested in it.