Catalinbread - SCOD & V8

Franky · Post by **Franky** » 18 Jul 2008, 11:16

Hi guys, a friend of mine is interested by builing a V8 fuzz from Catalinbread, it seems to be based on a modified Fuzz Face, to get the oscillation at the end of the fuzz pot.. Anyway if someone has a schematic, it would be great..

For my part I'm looking for a good overdrive/booster pedal, and the SuperCharged OverDrive seems cool (even if it looks and sounds a lot like a SuperDuper by Zvex..). So the circuit could be made out of BS170 stages (SuperHardOn) and a contour control, which doesn't seem to affect the sound a lot..

If you guys have some info on these pedals...

soulsonic · Post by **soulsonic** » 19 Jul 2008, 05:41

Franky wrote:it seems to be based on a modified Fuzz Face, to get the oscillation at the end of the fuzz pot..

That's not a "modification" - it's something that Fuzz Faces made with high gain Silicon transistors will do naturally if the max gain of the circuit isn't brought under control. Some jerky people (like me, for instance) would consider that to be a malfunctioning Fuzz Face.

So, just build a stock Fuzz Face with BC549Cs and it will almost definitely oscillate with the fuzz pot turned up all the way.

analogguru · Post by **analogguru** » 19 Jul 2008, 08:12

For this reason some manufacturers like Jen added a 100 Ohm resistor in series with the bypass capacitor.

analogguru

Franky · Post by **Franky** » 29 Aug 2008, 14:48

Hi, I'm trying to understand something: you advised some BC549C transistor on a stock Fuzz Face, but these are NPN transistors (and most Face circuits are using PNP transistors..)

Is there an equivalent in PNP?

I'll be using the TonePad schematic for the stock Fuzz Face (positive ground).

nooneknows · Post by **nooneknows** » 29 Aug 2008, 16:22

Franky wrote:Is there an equivalent in PNP?
I'll be using the TonePad schematic for the stock Fuzz Face (positive ground).

2N3906 is fine, not exactly equivalent of BC549C but it works ok on a fuzz face

Franky · Post by **Franky** » 29 Aug 2008, 19:19

Thank you! I located something else:

What I need is to make the fuzz oscillate, so maybe change the 100k feedback resistor by lowering it (or stick a pot at the place) to increase feedback and make it oscillate... Could it work?

TragicTravisty · Post by **TragicTravisty** » 29 Aug 2008, 20:30

no, a pot would not work because the resistor is in series with the 1k fuzz pot to ground. so pot all the way down+fuzz all the way up=silence. it would problably act as a gain control, but really muddy up the signal(it would change input impedance which is already at a ridiculously low 100k. the simplest way would be to just use a high value pot varying resistance from the output to the input. i would problably use a 1M pot varying resistance from before r3 (whats that called?) to after c1 (whats that called?). this would put transistor1 in series with transistor2 in series with transistor one for infinity. this makes noise.

Natman · Post by **Natman** » 03 Feb 2011, 20:49

I don`t know if it`s kosher to resurrect this thread, but the V8 fuzz is one of those pedals that always interested me but disappeared into obscurity before I could try it. Is there a resource somewhere with more info about it?

Thx

Natman · Post by **Natman** » 05 Feb 2011, 01:34

Somebody must have coned this one?