Minnow w/ some minor tweaks

[DGWVI]

Build Rating

5.00 star(s)

For a while, this circuit was my favorite envelope filter, until I discovered the joys of the Agent 00Funk and Mu-Tron III. I still really love this one for its stabby aggressive band pass filtering, but I'm an LPF kinda gal these days. The Sample & Hold feature is pretty nifty, but not something I could ever really get to work with my playstyle.

This particular board Was supposed to be a part of this multi, with some fun integrations with the Circulator, but I didn't like that it completely neutered the Captain Bit.

Anyway, a few minor tweaks-

• R7 & R8 lowered to 10k to allow more current from the peak detector and lfo to reach the OTA
• C3 increased to 10n, C24 increased to 33n to fatten up the filter
• IC1 is a 1458, because I like it's response in peak detectors
• IC2 is a TL022 because that's what I grabbed
• Q3 is an MPSA13 (socketed) because it was the noisiest transistor I had, and I tried dozens
• Sens / Filter is 50kC, with a 10k between pin 1 and ground to even out the rotation a bit

Now, it can do it's funky quacky thang and get into some growling, shaky synth timbres, and has a much wider usable range from the Sens, Atk, and Dec pots

(Demo incoming)





Overall, I like it. Though, it's not as fat sounding as I like my envelope filters to be. The S&H is fun, but not something I'd personally use much, if at all.

As always, a wonderful layout and simple build. Recommended for fans of quack

 

[Matopotato]

Does the
"R7 & R8 lowered to 10k to allow more current from the peak detector and lfo to reach the OTA"
and the
"IC1 is a 1458, because I like it's response in peak detectors"
depend on each other?
What sonic effect does more current from the peak detector (and LFO) to OTA give?

 

[DGWVI]

Does the
"R7 & R8 lowered to 10k to allow more current from the peak detector and lfo to reach the OTA"
and the
"IC1 is a 1458, because I like it's response in peak detectors"
depend on each other?
What sonic effect does more current from the peak detector (and LFO) to OTA give?

The two don't depend on each other but, together and separately, they effect the overall sensitivity and range of the peak detector. The 1458 has a much wider swing than the TL072 called for in the doc

 

[Feral Feline]

Always Love your mods.
Need to try these one, two, three, too, for now.