Envelope Filter/follower

[Devius]

I tried the qtron the other day and I must say wow! What a lush sound. Is there any diy stuff that sounds that good?
If so, anyone have a schematic or vero layout for it? I a/b'd it with my quacky and I want that qtron sweetness!
My quacky sounds so tame that I wonder if it something is wrong with it.

[midwayfair]

I tried the qtron the other day and I must say wow! What a lush sound. Is there any diy stuff that sounds that good?
If so, anyone have a schematic or vero layout for it? I a/b'd it with my quacky and I want that qtron sweetness!
My quacky sounds so tame that I wonder if it something is wrong with it.

Madbean just released a Mutron III type project -- it's not the same as the Q tron, but they can do a lot of the same ground. They'll both do the crazy swirly sounds, and the Mutron is one of the truly great effects. If you wanted to add an effects loop, but it could easily be done with a buffer/splitter.

http://www.madbeanpedals.com/projects/Nautilus/Nautilus.pdf

[Devius]

Yeah, after a bit more research just after my post I saw the qtron and mutron are quite similar.
I want to built a mutron but I have a few other builds I'd like to do first. I'm just a bit bummed my nurse quacky isn't fulfilling the sound I want. I love that funky autowah sound and I want to make it work. I'm currently breadboarding the Dr. Quack and see what that sounds like.

[Mark Hammer]

A filter is not a filter is not a filter.

Neither the Nurse Quacky or the Dr. Quack will likely do what you want.  Not that either is a bum circuit.  rather the "tron" circuit provides for lowpass filter with high resonance, that retains beef while yielding an audible quadi-bandpass sound, at a somewhat steeper slope.  The various "quack" units provide for a bandpass filter only, with a shallower slope.  It is a very musically useful tone, but not the same beast as a 2-pole lowpass.