I have never sorted JFETs for Idss on any of the 208/258/25S I have either built or repaired. I simply tweak resistor values. Typically it is too much triangle amplitude and the trimmer won't go low enough. There is a resistor voltage divider feeding the trimmer. I usually lower the bottom leg. In ...

If your sine purity trimmer does not result in an acceptable sine wave then yes, you need a J201 or 2N4339 selected for the desired Idss range. I believe Dave Brown has mentioned changing other parts in the sine shaper but I have zero clue regarding what or how. Edit: Warning, there are fake 2N4339 ...

Stereo vactrol-based volume controls require devices matched for curve. Offset matching is for use in filters (291) and in the 208 ring modulator.

Xvive are visually different, image from SAmodular:

Usually the same device in a smaller package...but shorter signal paths can be beneficial

I was wondering if the Cocteau clap mods would be compatible with the BA662A I haven't tried it, but I can tell you that the Remora 808 CP cartridge (a direct clone of the 808 circuit) works with both the BA6110 and BA662 clone. You just have to switch some pins: BA662 -------> YOCTO BA6110 pin 1 -...

Adam is a top-notch builder!

NASA NEEDS VACTROLS

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Absolutely is David Kean who literally inspired Don to begin making modules again.

I've heard people say adding resonance to the 297 through feedback makes it even more fun.

I just reflowed all the pads, hoping there might have been a broken connection from cutting them flush, will update

If the TTMC 158 doesn't say it's specifically 1.2V/Octave on the CV inputs then it's the original 100 Series oscillator scaling which is something like 4V to rise 3 octaves. Yes, an external CV mixer should allow tweaking the signal to drive the 158 to 1.2V/Octave. Happy knobbing! If anyone's intere...

Looks like TTMC used the vintage implementation of the front panel switch toggling between the front panel frequency pot and the external CV in jacks; only one at a time are used. (Does the Frequency pot do something in both Int/Ext switch positions? If so there may be an internal CV mixer.) Users w...

(Sorry, saw this in the recent posts feed and replied before realizing it was for Eurack.) My most recent version of the 158 (and 144) has a simple opamp CV mixer so the Frequency pot and external CV ins can function simultaneously. I've noticed after calibrating the module to the original scale of ...

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Yes, I know. Lost the password to the blog quite a while ago so I can't update that. Search Muff's DIY for the same module and there they are. Some are on electro-music. I have updated versions of the 144 and 158 I build to order with a couple of extra features.

If there's a page at blogspot.ebolatone.com there is likely an etch available. Excepting the 258B.

Usually they're here on Muff's if you search the forum

Some people mix the distortion's output with the dry signal, balance and EQ them as needed, to get the results they want.

Has anyone figured out which knob was used on the 258/291 on the 1/8" RV6 pots?

The M1 is entirely sample-based and the D50 contains numerous samples of the attacks of acoustic instruments (some looped) to layer upon the traditional waveform synthesis section.

At 1:20

It sounded like they took the audio of the bits after clear speech and just used the ambience of the "uh" "ah" "oh" and transitional bits between easily-recognizable vowels, fricatives, and plosives. Like taking all the sound a guitar makes after the pick hits.