Author Topic: My univox super fuzz pedal kit won't work  (Read 9667 times)

snow123

Re: My univox super fuzz pedal kit won't work
« Reply #280 on: May 08, 2021, 09:51:15 PM »
ok, now that im done with the build, what do the 2 trimpots do? i know 1 controls the clipping, but what does the other one do?

It adjusts the octave - subtle changes, donít expect anything extreme.

ok, thank you.

duck_arse

Re: My univox super fuzz pedal kit won't work
« Reply #281 on: May 09, 2021, 10:22:35 AM »
HOLY SHIT THE PEDAL WORKS NOW

I donít think anyone saw that coming   :icon_biggrin:

I didn't see C16 coming. how are we going to fill another 90 pages, antonis?


if you tune the octave trimmer very, VERY carefully, you should be able to hear a point [actually two points] where the background hiss from the circuit drops quite a bit. this might be the maximum octave point, but it might also be not the best sounding point.

and well done on the fix. what's next build?
"You ain't seen me, right?"

bluebunny

Re: My univox super fuzz pedal kit won't work
« Reply #282 on: May 09, 2021, 01:00:20 PM »
how are we going to fill another 90 pages, antonis?

Turn this into an astronaut (the other) project?   :icon_biggrin:
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Ohm's Law - much like Coles Law, but with less cabbage...

antonis

Re: My univox super fuzz pedal kit won't work
« Reply #283 on: May 09, 2021, 01:19:16 PM »
how are we going to fill another 90 pages, antonis?

 :icon_mrgreen: :icon_mrgreen: :icon_mrgreen:

We still have two trimpots to deal with, don't we..??  :icon_wink:
"I'm getting older while being taught all the time" Solon the Athenian..
"I don't mind  being taught all the time but I do mind a lot getting old" Antonis the Thessalonian..

snow123

Re: My univox super fuzz pedal kit won't work
« Reply #284 on: May 10, 2021, 06:25:12 PM »
also, when im playing through the pedal i get a weird phaser/filter effect in the background. is that normal? or is it cause of some of the mods in the circuit i build?

andy-h-h

Re: My univox super fuzz pedal kit won't work
« Reply #285 on: May 10, 2021, 09:17:31 PM »
also, when im playing through the pedal i get a weird phaser/filter effect in the background. is that normal? or is it cause of some of the mods in the circuit i build?

Keep in mind that this is a pretty intense octave fuzz.  As much as I love the Super Fuzz, I don't love it for full chords, cause it doesn't always sound right.

The mods you have don't fundamentally change the circuit.   They aren't causing the effect.   

PRR

Re: My univox super fuzz pedal kit won't work
« Reply #286 on: May 26, 2021, 03:46:49 PM »
....plastic package implies a PN2222A or a P2N2222A, those two have opposite pinouts.   A plastic package 2N2222A has an ambiguous pinout.    If I had to guess I'd probably go with the PN2222A pinout, ....

The May 2021 issue of QST has a note that some variants of the 2N2222 have varying pinouts.....

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Rob Strand

Re: My univox super fuzz pedal kit won't work
« Reply #287 on: May 26, 2021, 09:04:12 PM »
Quote
Quote from: https://www.diyaudio.com/forums/parts/372810-pinout-issues-2n2222-pn2222-p2n2222-transistors-post6669099.html
Interesting the problem has popped up again.

A common part for a zillion years, now on the brink of extinction, and still uncertainties about the pinouts!
It's a crazy world.  Makes you doubt your own sanity when stuff like this come up.

It all made sense until the plastic units marked 2N2222A appeared.
The internet:  answers without the need for understanding.