Schaller - Fuzz  [schematic]

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Schaller - Fuzz  [schematic]

Postby Bernardduur » 09 Jan 2008, 22:23

Also in a package; a non working Schaller fuzz

Image

Image

Schaller fuzz schematic from Analogguru's site; this version differs though:

- No C3
- C5 = 10 uF

Unit works now; sound sucks though :) Transistors are BC (no further marks).
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Postby seniorLoco » 10 Jan 2008, 02:43

:shock: Is that 4pdt switch ??!
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Postby Bernardduur » 10 Jan 2008, 07:35

seniorLoco wrote::shock: Is that 4pdt switch ??!


No a 4PST switch
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Postby seniorLoco » 10 Jan 2008, 08:34

ahh yup ... looks cool tho :lol:
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Postby modman » 10 Jan 2008, 10:30

Great pics BD!

I have a similar patient here Schaller too, didn't have the chance to post.
There a good chance that replacing the polarized electrolytes top and bottom by new ones will make a considerable difference, but check the voltages to we know what going on in the gain stages.

Case plastic too?
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Postby Bernardduur » 10 Jan 2008, 20:50

I think so too yes.... but the owner won't let me! He likes the sound, dunno why :)

Voltages:
V+ = 9.03V

Q1:
C = 2.05
B = 0.63
E = 0

Q2:
C = 4.75
B = 1.69
E = 1.05

And yes, plastic case, metal underplate
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Postby analogguru » 15 Jan 2008, 10:14

- No C3


possible, but C3 always was mounted on the solder side on all units I have seen.

analogguru
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Postby NickS » 15 Jan 2008, 11:57

Welcome back, AG! Hope all is OK (see "AG content" thread in Members).
Good grief, that Schaller fuzz uses components I still have in my box. Those electrolytics....
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Postby Bernardduur » 15 Jan 2008, 20:28

analogguru wrote:
- No C3


possible, but C3 always was mounted on the solder side on all units I have seen.

analogguru


I checked when I got the unit if the C3 wasn't on the other side. It's not there :). Sounds pretty nice on high volume btw!
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Re: Schaller - Fuzz

Postby MoreCowbell » 10 Mar 2008, 02:04

Pics of a different unit....

Image

Image
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Re: Schaller - Fuzz

Postby analogguru » 10 Mar 2008, 02:22

That´s the older ge-transistor version probably with 2 x AC 192.

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Re: Schaller - Fuzz

Postby MoreCowbell » 10 Mar 2008, 02:38

analogguru wrote:That´s the older ge-transistor version probably with 2 x AC 192.

analogguru



I'm trying to buy it from the owner (bypassing the auction). Its a non working unit...I'm sure its just a fuzz face variation, but I'd still like to own it.
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Re: Schaller - Fuzz

Postby modman » 24 Sep 2008, 23:06

Here are some pics of the older Ge unit, which might have gone under the name 'Fuzz Booster'? At least that's how this unit was listed on Ebay.
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Re: Schaller - Fuzz

Postby fosnal1950 » 02 Oct 2008, 19:42

It's one of the worst sounding fuzzes I know by modern standards - I used to play one back then !!

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Re: Schaller - Fuzz

Postby Alex Frias » 03 Oct 2008, 14:03

fosnal1950 wrote:It's one of the worst sounding fuzzes I know by modern standards - I used to play one back then !!

Alf


Hummmm... I think now I'm into it!!!
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Re: Schaller - Fuzz

Postby plexilover » 15 Nov 2008, 17:11

Are the guts this one of the running version?
A friend of mine has got one, not working, wired it the same way, components ok, no sound just humming...
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Re: Schaller - Fuzz

Postby lolbou » 08 Jul 2010, 21:48

Some more guts showing different PCB placing and missing/removed part. These two units are currently for sale on a french ad site, both for around 150/200€, both claiming to be stock (which looks like a lie)... The enclosure style is different too.
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