Author Topic: My univox super fuzz pedal kit won't work  (Read 8122 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?
.... adding a bit of "supplementary hair" ....

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.