CMOS4049ube 3 legged dog bias ?

[petemoore]

  Using Omega as stage 1.
  then three CMOS Stages
  [ground and unused pins: 8, 9, 14 :common to ground]
  6vdc supply gets mostly 2.2volts mostly on the inverter pins, and a 2.6.
  Sounds great but the sustain does the 'dezschweeeereeeaiaattthhhhct' sound.
  Pretty sure it's wired right, lots of nice distortion and also lots of boost [even with a 10k volume pot].
  Just the wierd gating sound .. as the sound tapers off, wierd sound like stray static is finding it's way over 'here', then finding it's way over 'there' and the sound is like it has to plow through aluminum to get there.

[tskullt]

Hey Petemoore,
  Sorry, I have know idea how to help, but that description is great.
m.

[petemoore]

  Thanks ts kullt !
  mahn I thought I built this one right, but debugged it anyway.
  Sounds really hard-tube-emu-crunchy nice and all...just the funny fadeaway.
  Super colorful descriptions get filed in the 'wierd problems' bin anyway.
  I haven't had a new chip to try on this one..hard to say if I'm willing to spring...I've only done a few CMOS and not all were total failures...a lot like this one. The other chip got heated by fire, but none of these builds worked really right for me anyway, figured I'd take it back up after giving up/after the previous ~failures. Chalk up another one !
  As far as I can tell these distorters just can't work for me for some reason.
  Maybe I'm not handling the chips properly...er...taking them straight out of the package grabbing end to end and installing directly into socket...maybe I've got >20v hands.

[tskullt]

Hey man,
  I've never made a CMOS distortion, no good reason really, but I gravitate toward overdrives, I doubt your handling of the chips has anything to do with it though...  I've done some switching stuff with CMOS and was never particularly careful of them, perhaps I'm well grounded??
m.

[petemoore]

  I figure if I somehow popped the input glass, there would be ~0 'containment'.
  Just should have mentioned I wondered if oscillations have accompanied these types of build, 3 stages, high gain and no HF supression, sound seems like maybe oscillations are creeping in when notes fade [basically on the edge of full oscillations, coming in and out: oscillating in and out of oscillation...lol]

[petemoore]

  There it goes !
  When the schematic says 9v it's worth a try...
  I recall 5v being a decent voltage to play with, so 7.so Volts seemed like...easy to forget about.
  @@Rate I put it on my PS instead, after adding a '221' cap at the input to ground.
  And the Box really is Rocking. The CMOS chip is easy to make great distortions with [thanks for the Chip goes to Mr. Martin Lister !].
  Really nice distortion tone is working it's way on the pedalboard already! I'm just undecided whether to let the Omega keep being 'stage 1' or put the Jfet there as shown in the schematic.
  I'm getting a big charge out of the CMOS tone !

[MartyMart]

  There it goes !
  When the schematic says 9v it's worth a try...
  I recall 5v being a decent voltage to play with, so 7.so Volts seemed like...easy to forget about.
  @@Rate I put it on my PS instead, after adding a '221' cap at the input to ground.
  And the Box really is Rocking. The CMOS chip is easy to make great distortions with [thanks for the Chip goes to Mr. Martin Lister !].
  Really nice distortion tone is working it's way on the pedalboard already! I'm just undecided whether to let the Omega keep being 'stage 1' or put the Jfet there as shown in the schematic.
  I'm getting a big charge out of the CMOS tone !

Pete, you're very welcome
Oh the old " not the right voltage " trick - yup been there and done that ! , another good one is the
"there's no sound because I didn't put the IC / Transistor is the socket yet"  - a classic !!

Peace,
Marty.

[dschwartz]

i love cmos distortion, and i´m planning to make a layout for a "CMOS DISTORTION LAB", where feedback/coupling RC values are all in sockets, boosted by a 741 and big muff tone control at the end...

The lack of info on using these little wonders as audio devices makes them very suitable for experimentation...like diodes on feedback, mid boosting, etc.

[petemoore]

  One of the worlds finest Dogs.
  HAs a nice-mean bark to it.
  Fresh jolts of distortion tone for every pick attack.
  GreaT sustain and harmonics.
  Overall has interesting and very appealing voice, not sure how it works but it works great, very simple really as far as wiring up...no voltage divider, parts could just about be picked up with thumb and forefinger.
  Thanks again ! and Again !

[WGTP]

Check this out if you haven't seen it.  http://runoffgroove.com/ubescreamer.html

Also the Twenty Two Sevenths from STM is a very cool BMP deal.  I got a new bread baord to try it with. 

[MartyMart]

I got a 22 7ths working well but had problems with my UBE screamer, that even some emails with
STM couldn't solve.
It was farty and kind of gated on release of chords.
My results from the cmos stuff is 60/40 - only 40% have worked well !
MM.

[petemoore]

  Sure hope this one keeps working, I was playing that tone for an hour.
  One Fine Distorter Fuzz, does great job on rythm crunches as well as wailing lead tones.
  By that tone I mean volume control stayed the same, 220k gain set resistor stayed the same, Minibooster after..only thing changed really is Dynacomp or Omega as 1rst stage.