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theemadcap1- 06-16-2008

Here is an MKII made for me using NOS Mullard OC81D transistors. Sounds REAL nice!! The transistors, I think, pre date the 'Metal can' transistors(?)...

Psycho*Daisies- 06-17-2008
Re: Supa fuzz circuit w/ OC81D transistors...
Wow! That's a nice, super clean one!! Looks like the input and output caps are different...they are the brown molded caps vs. gold WIMA caps. Are the values the same? Seems that I have seen blue ones with ".1", while mine has ".05". Wonder what that means? Mine has got a mixture of light tan and dark brown resistors, while yours has all tan resistors. I wonder what Dave's circuit looks like, in comparison? Is it posted anywhere? Cheers! I don't think I've seen the guts on Dave's, just the outside. I'm sure he'll post it if we ask.... :) I'm no expert on these, but i know the Supa has one or two slight differences... Yours looks very similar to the Supa pictured right below mine. (except for the OC81D's, of course...but same colored resistors, etc...), but on the far right is slightly different, interesting...

theemadcap1- 06-17-2008

Yes, it looks near identical, but it has no limiting resister, like a TB Pro MKII, no space even for it. It is identical to the TB Pro MKII circuit I posted, except for the transistors and a couple changed caps. It would be cool to see Dave's MKII circuit, Please?! I saw a Marshall Supa Fuzz sell on eSchmay for $800 a month or so ago, that had the same exact circuit, except the transistors were all changed out...let me see if I have that jpeg file... I wonder how many OC81D MKIIs were made back in the day? Obviously a few, but 100? 500?

simonm- 06-17-2008
Re: Supa fuzz circuit w/ OC81D transistors...
Wow! That's a nice, super clean one!! Looks like the input and output caps are different...they are the brown molded caps vs. gold WIMA caps. Are the values the same? Seems that I have seen blue ones with ".1", while mine has ".05". Wonder what that means? Mine has got a mixture of light tan and dark brown resistors, while yours has all tan resistors. I wonder what Dave's circuit looks like, in comparison? Is it posted anywhere? Cheers! Yours looks mostly like mine, apart from the OC75s (Dave reckons its around '67): The gold cap in parallel with the one below it is a mystery - looks original, no differences in the solder tarnish, and super neat. The stripboard looks darker in this pic than in reality. This is a scan rather than a photo, so it looks odd.

Graham- 06-17-2008
Marshall Supa Fuzzes - 2nd and 3rd body styles
Here's a couple of comparison pics of my subsequent issues of Supa Fuzz so you have them all in one place. First what I think of as the 3rd version. In the second type of body with Script printed lettering - 3 OC75's and the KF board. I have seen this same version (same internal arrangement) with the "Marshall" in script and the "Supa Fuzz" in block lettering - i.e the other way round like on your OC81 version but in this version of the body.. Here is the third and last body shape with the lettering embossed into the casting - what I think of as the fourth version - still with 3 OC75's and using the KF board. THis body was used for an even later version but that one used a plain brown or green pcb rather than the KF board. I probably ought to put these up with a few extra shots on their own threads and will doubtless get round to it one day but in the meantime I hope its useful for folks to see how they changed. Maybe someone (or me) ought to stick up the pics of the Captains old 2nd version 1st body shaped version to round things off.. I think that D&C ended up with it (lucky sod!! :) ) so I wont stick up my "library" shots of it yet.. G 8)

Dazed and Confused- 06-18-2008

Hi Graham, Please feel free to post shots of the Cap's ex-missus if you like, don't mind me! :) Or I can stick some fresh pics up later. Agreed the Supa deserves a posting all of its own for historic records, there are some existing old Supa posts that we could use and update with new pics. I love Supa Fuzzes, there is something slightly haunting about the fuzz you get from them (that could just be me!), I have 3 different ones but none with the raised script case and pcb (yet). This is a (poor!) pic of my second case version with second version strip board (I think thats right?): Check out the vintage band-aid insulation for the renewed battery connection! Peace D&C

theemadcap1- 06-18-2008

Looks like a whos-who of the best Fuzz pedals on the planet! So, here is a picture of the Supa Fuzz that sold on ebay about two months or so ago, the circuit is identical to mine, except it has 3 changed transistors. It even has the 'piggy-back' cap that simonm's has. and here is a Supa Fuzz with the clear circuit board from around 1970 That last Supa Fuzz circuit that Dazed and Confused posted looks transitional, as it has the same early circuit board, like mine, but has the later layout and components. Wouldn't it be cool to A/B all these pedals and find the 'Golden One', though I'm sure they all are pretty 'Golden'...? Question- Was the one simonm posted a Supa Fuzz or TB Pro MKII? and with pots dated '2 66' would my Supa Fuzz be from 66 or 67? Thanks!!

The Captain- 06-18-2008
Re: Supa fuzz circuit w/ OC81D transistors...finally posting
Here it is...(I hope) Hey John, Cool to see you here!! Excellent pic!! :D

theemadcap1- 06-18-2008

Hey Dave! Yea, I finally figured it out. Got a bunch of new pics I took. Been super busy and none of it involved music :-( Gotta make more time for this stuff...so many great pieces, so little time! Great to see your pedals doing so well! I saw you on the new "Fuzz" movie my friend Clif made...this thread is shaping up nicely! Cheers!

theemadcap1- 06-18-2008

Dave...also can you post a pic of your Vox TB Pro MKII circuit?? Cheers!

Graham- 06-18-2008

Looks like a whos-who of the best Fuzz pedals on the planet! So, here is a picture of the Supa Fuzz that sold on ebay about two months or so ago, the circuit is identical to mine, except it has 3 changed transistors. It even has the 'piggy-back' cap that simonm's has. and here is a Supa Fuzz with the clear circuit board from around 1970 That last Supa Fuzz circuit that Dazed and Confused posted looks transitional, as it has the same early circuit board, like mine, but has the later layout and components. Wouldn't it be cool to A/B all these pedals and find the 'Golden One', though I'm sure they all are pretty 'Golden'...? Question- Was the one simonm posted a Supa Fuzz or TB Pro MKII? and with pots dated '2 66' would my Supa Fuzz be from 66 or 67? Thanks!! Like many here I was watching that first one but didnt fancy bidding (although 10 people did!) - guy called Waddgie fairly new to ebay with below 5 scored was enough to make me hesitate and 400 quid! here is what he said about it edited to fit better... "This pedal is now a rarity; I bought this one in 1967. These pedals have a strong middle to the tone and a fairly long sustain. The Marshall knobs on top have had the aluminium centres kicked off and the grey crinkle finish has some small eroded spots; the control marks have been retouched. The original battery connectors have been replaced with a PP3 battery holder as the original batteries are no longer made. The feet unscrew for changing the battery. -following suggestions from interested parties, I have added the best picture I can take of the circuit board. It does appear to have been modified when compared with an original - However this pedal has not been changed since 1967. The transistors are NKT ACY17 (on the left), ACY20 at the top and OC81 with the heat sink around it. An extra yellow capacitor has been wired in parallel with the silver one just to the right of the transistors." In hindsight it was not that bad a price but I'm not sure how straight it actually was - anyone here buy it

The Captain- 06-18-2008

The Wife (Vox MKII)... Psycho Davy's spookily clean Vox MKII.... The Ex-misses (Supa Fuzz MKII)...now living in sin with D&C... Very early Sola Sound MKII... First issue Supa Fuzz MKII, pics sent to me by the same dude who has the transitional MKI.5/MKII... Rotosound Fuzz Box sporting OC81D's (and no 0.01uf on the input)... Looks as though the MKII/Supa circuits using the Wima caps could slighty pre-date the boards that have the Iskra caps.....maybe by only by a few months?!?! The MKI.5, the early SS MKII and the early Supa all have the Wima's. Could be that Sola Sound changed cap types at random but that doesn't really figure if you are building a pedal in some kind of mass produced manner.

The Captain- 06-18-2008

Looks like a whos-who of the best Fuzz pedals on the planet! So, here is a picture of the Supa Fuzz that sold on ebay about two months or so ago, the circuit is identical to mine, except it has 3 changed transistors. It even has the 'piggy-back' cap that simonm's has. and here is a Supa Fuzz with the clear circuit board from around 1970 That last Supa Fuzz circuit that Dazed and Confused posted looks transitional, as it has the same early circuit board, like mine, but has the later layout and components. Wouldn't it be cool to A/B all these pedals and find the 'Golden One', though I'm sure they all are pretty 'Golden'...? Question- Was the one simonm posted a Supa Fuzz or TB Pro MKII? and with pots dated '2 66' would my Supa Fuzz be from 66 or 67? Thanks!! Like many here I was watching that first one but didnt fancy bidding (although 10 people did!) - guy called Waddgie fairly new to ebay with below 5 scored was enough to make me hesitate and 400 quid! here is what he said about it edited to fit better... "This pedal is now a rarity; I bought this one in 1967. These pedals have a strong middle to the tone and a fairly long sustain. The Marshall knobs on top have had the aluminium centres kicked off and the grey crinkle finish has some small eroded spots; the control marks have been retouched. The original battery connectors have been replaced with a PP3 battery holder as the original batteries are no longer made. The feet unscrew for changing the battery. -following suggestions from interested parties, I have added the best picture I can take of the circuit board. It does appear to have been modified when compared with an original - However this pedal has not been changed since 1967. The transistors are NKT ACY17 (on the left), ACY20 at the top and OC81 with the heat sink around it. An extra yellow capacitor has been wired in parallel with the silver one just to the right of the transistors." In hindsight it was not that bad a price but I'm not sure how straight it actually was - anyone here buy it I was watching that Supa too but those transistors look pretty well changed to me....could have been a Friday afternoon job but it looks very un-Sola Sound style wise....they ain't even in the usual positions on the board and the OC81 looks as though it has a heat sink?!?! :?

Graham- 06-18-2008

Dave - do you have a board pic of the Zonk that could go up alongside that fine grouping above - I can put a pic of the gold Roto mk2 up tomorrow - its got OC75's so is pretty similar to my eye to the supa fuzzes. Just it would be nice (and useful) to show them all in similar fashion one above the other like you started here. Cheers G 8)

The Captain- 06-18-2008

Dave - do you have a board pic of the Zonk that could go up alongside that fine grouping above Indeed G :D I can put a pic of the gold Roto mk2 up tomorrow - its got OC75's so is pretty similar to my eye to the supa fuzzes. Just it would be nice (and useful) to show them all in similar fashion one above the other like you started here. Cheers G 8) 8) Woo Yeah!!!! I think this might be that said pedal a few years ago... Damn! That colour is too nice :shock: Yup, I think it has the same board as D&C's Supa with 100ohm limiting resistor.

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