Wow, that's much nicer!

Great, that should make it easier for people to find info on this pedal.

That place has info on all kinds of weird stuff, including a Hexaphonic Synth thing I'm working on.

I'll have to start a new thread on that, got it working, but not quite right.

Great thanks

More pix.

Or so I was told, maybe someone can tell by the writing.
Looks like a wah or volume pedal with a boost?
Push the heel switch and the signal oscillates?
Unique

Deja Vu Got one of these in for repair and stumbled across this thread while researching it! Wow, the volume is pretty low on these, lowering the 10k does help, raising the two 1k resistors really kicks up the volume! I'm going to experiment with values to find a sweet spot of more volume while reta...

Nice work Apollo, helped me fix a nasty one.

Appears to have been hit with bad or wrong power supply, every chip but the 393 comparitor was bad.

Hmmm, just worked on a PDS 20/20 that does the same thing.
Also does it when switching between Flange/Chorus/Delay.

Here's an odd one
made in Italy, with help from Gary Hurst.

This "website" you mention nightraven, I assume it's about fuzz pedals?

You have a link, if you don't mind?
Thanks.

Nice!

Original box and everything, sounds pretty good.

Well just to follow up, lowering the 22K collector resistor to 10K kills just about all the oscillation without altering tone. Since it has such a high level output I was thinking of adding some clipping diodes to the output, either switchable or with a blend pot for some nasty fuzzy fun. definitely...

So in a fit of boredom at work, I built one of these a couple weeks ago using the layout below. It's oscillating really bad with from Q1 with gain or volume up halfway. Increasing the 10pf across Q1 kills the oscillation but it sounds too muddy. I need to clean up the layout, I just slapped the part...

Got one of the Butler Tube Works 12AX7 Bass Driver pedals Looks similar to the RT-903 Smooth, but in the smaller blue box, five knob. It seems to function properly, although the output level isn't very high That seems to be pretty common for these, correct? I'll try a new 12AX7, maybe up the value o...

Bernard Raunig aka Bernie was they guy who, according to internet lore, started converting the little tube amps in Bell&Holl Filmosound projectors into guitar amps. But he only did a few for musician in Toronto area, then dissapeared from the scene... He seems like a smart guy. Everybody wants ...

I built a fuzz box kit from Hallibar? I believe?
That was in electronics class in 1981.

Also adapted a wireless mic kit for guitar, but didn't finish the project.

Still got an A in the class!

Woah, never saw any of these before.

I've worked on many Thomas Vox amps with the built in fuzz, and even a 12 string Cheetah guitar w/built in FX, but never knew these existed.

I've worked on a few of the Thomas Vox amps over the years, but have never seen a Scorpion.

Looks like the same construction.

That chip looks like the Sprague RC networks you find in 60's Gibson amps.