So this looks like one of the D*A*M one-offs from back in the day - a MKI style fuzz, using a variation on a Zonk layout. There are some departures from stock values, some of which are not entirely clear.
Here's the thread from an old FSB post. Here's the thread on the D*A*M forum.
D*A*M FZ-676 VERO LAYOUT
There are a few components that are not visible, but if you have any build experience, you can make some reasonable assumptions. Pop it on a breadboard... I know that's what I'm about to do.
One thing that throws me is this - the resistor next to the OC45 (the Q2 collector), is it brown green red gold, (1k5) or purple green red gold (7k5)? I think 7k5, the schematic on FSB says 1k5.
On the breadboard, 7k5 works just fine, so I'll stick with what I see and hear. Can't always trust what you find online, including here ;-)
6 comments:
looks like violet to me, in that case 7K5 ?
I works on the breadboard with 7k5 - sounds good to me
Do you suggest any hfe and leackeage for the transistores?
Not really - just the usual dark arts of Zonk transistor selection.
Q2: An OC45 will be low hFE and very low leakage.
Q1 & Q3: I've not used OC78 before, but I sustpect they will be moderate gain and leakage - they kind of have to be to work.
thanks Andrew, I want to try it, zonk machine + D*A*M, it should sound as very nice, the problem is to find this germanium transistors in Spain. I will buy these in UK.
Good luck - Langrex always has decent stock, or there's always eBay
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