Univox - Superfuzz  [schematic]

Discussion regarding early stompbox technology: 1960-1975 Please keep discussion focused and contribute what info you have...
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MoreCowbell
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Post by MoreCowbell »

Incredible - after searching "univox" , "super" + "fuzz", and "superfuzz" theres no thread on this classic effect.

Anyway, schematics can be found
univox_superfuzz_schematic.gif

analogguru
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Post by analogguru »

And here are the project files for your own clone:
http://members.fortunecity.com/uzzfay/home.html

you can choose between grey/black or orange/blue.

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Post by Bside2234 »

I am building one right now. I am 1 resistor short :evil:

I personally am really sick of fuzz pedals. I just had to build this one though.

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Post by Fuzzer »

I am sick of an addiction to fuzz pedals.
The Freestompboxes Forum search function is soo great, use the search function..., the S E A R C H function.

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Post by Solidhex »

analogguru wrote:And here are the project files for your own clone:
http://members.fortunecity.com/uzzfay/home.html

you can choose between grey/black or orange/blue.

analogguru
Yeah,

There isn't a specific a specific schem given for grey black vs orange blue but you can see the early version has a .001 cap in the filter. The later ones have a .002. Pretty subtle difference though.

--Brad

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Post by ShortScaleMike »

I made designed and built a stripboard layout for this. the original layout is verified (it was a paper design), unfortunately this electronic version isn't as yet.

Image

Here is the one I built:
Image
Image
Image

Tones are footswitchable with a dual colour LED

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Alex Frias
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Post by Alex Frias »

The "STARVE" knob is some kind of SAG control?

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Post by ShortScaleMike »

Yup

Kinki fuzz
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Post by Kinki fuzz »

This piece of junk can destroy a man... uh! personal fauvorite!,
Well it has no mistery, there's plenty of info about it on the net, but I agree it deserved it's own topic.
Strongly recomended for every over-the-top-fuzz junkie.

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Post by salocin »

What does it sound like with the starve pot? Just about to case one of these, and might be interested in adding one in if it seems worthwhile.

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Post by Solidhex »

Yo

If you have an extra pot laying around I'd say do it. At first it just seems like a combo fuzz/volume control since it affects the volume and gain but the character of the fuzz gets less complex and gates in a cool way. It won't turn it into a fuzz factory or anything but its fun. Use a 5k though. The sound completely dies past that so a 10k or higher will have a large dead zone towards the end of the pot travel.

--Brad

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salocin
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Post by salocin »

Realised when I got home from work and started thinking about this that I had already drilled the enclosure for two pots (and also that I didn't have the right pot values so couldn't finish it tonight :cry: ). Lucky for me this build is for someone else so when I build one for myself I'll be sure to add this in. I'm quite a fan of gatey fuzzes.

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Post by ShortScaleMike »

Solidhex wrote:Yo

If you have an extra pot laying around I'd say do it. At first it just seems like a combo fuzz/volume control since it affects the volume and gain but the character of the fuzz gets less complex and gates in a cool way. It won't turn it into a fuzz factory or anything but its fun. Use a 5k though. The sound completely dies past that so a 10k or higher will have a large dead zone towards the end of the pot travel.

--Brad
+1

Just play around - I happened to like it.

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Post by graemey »

Is the starve wired as a variable resistor that simulates a dead or dying battery? does it just starve the circuit of voltage?
I fancy attempting this one and will add a starve if I can. Great looking pictures by the way! :D

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Post by RnFR »

here you go-

there is a lot of good info on beavis' site.

http://www.beavisaudio.com/Projects/DBS/

cheers!
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Post by ShortScaleMike »

graemey wrote:Is the starve wired as a variable resistor that simulates a dead or dying battery? does it just starve the circuit of voltage?
I fancy attempting this one and will add a starve if I can. Great looking pictures by the way! :D

Absolutely, just a pot inline with the voltage to the circuit.

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Post by graemey »

ShortScaleMike wrote:
graemey wrote:Is the starve wired as a variable resistor that simulates a dead or dying battery? does it just starve the circuit of voltage?
I fancy attempting this one and will add a starve if I can. Great looking pictures by the way! :D

Absolutely, just a pot inline with the voltage to the circuit.

Great stuff, Im gonna get busy with this one real soon! Thanks. :D

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Post by salocin »

To those of you who have built the superfuzz- do you have much trouble with hum/noise? Just finished mine off, and there's a fair amount of hum, which i've never had much trouble with in previous builds. I did have to twist the legs of the base and collector round as I used 2SC828's but the layout was designed for 2N2222's. Could that have anything to do with it?

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Post by Solidhex »

With any Superfuzz build expect a delayed blast of hiss about a split second after you hit a note or chord. If you don't like it TOUGH!

--Brad

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Post by salocin »

So glad to hear that! Have been trying to figure out what on earth I might've done wrong that would be causing that.

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