Have you looked here < The Wireless World Archive > Germanium Hifi preamp by Toby & Dinsdale. Built more than one of these in the past. 🙂 Many different transistors may be used see text.
CV7003, is an equivalent, as are a lot of others, if you are truly obsessed, you need to get these:
But that's just for rangemaster clones, not sure what the old Fuzzface had, I think something from the AC series, or BC, but I think those are all silicon and not germanium.
That Wireless World pre is interesting!
Too many nice schematics, too little time 😀
Edit:
As mentioned earlier, I bought these: CV7355 from eBay
Made quite a few fuzzfaces with them, they sound great.
An externally hosted image should be here but it was not working when we last tested it.
But that's just for rangemaster clones, not sure what the old Fuzzface had, I think something from the AC series, or BC, but I think those are all silicon and not germanium.
That Wireless World pre is interesting!
Too many nice schematics, too little time 😀
Edit:
As mentioned earlier, I bought these: CV7355 from eBay
Made quite a few fuzzfaces with them, they sound great.
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The MIL spec CV7003 is often a better option as the paint coated ones are awful if the paint chips and light gets into them.
I made a Germanium H/Phone amp. It does sound really good too. The second two transistor stage here could be adapted to suit.
http://www.diyaudio.com/forums/head...rmanium-single-ended-class-headphone-amp.html
http://www.diyaudio.com/forums/head...rmanium-single-ended-class-headphone-amp.html
Great link Bone.
I remember our library having a large slim Wireless World book of just audio circuits. Probably published in the 1970's. I don't recall much in the way of germanium circuitry in it though.
Wireless World in all its guises went downhill from the 1990's onward imo.
I've got three NOS OC201s here that I don't intend on using and can't even give them away.
All tested correct.
All tested correct.
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Yes, but:
It is intended for small input signals (electric guitar), he shows performance at 2v p-p but if you put a couple of volts on the input, you'll probably end up with a lot of distortion. Not sure what is does at higher V+ voltages, probably more gain = more distortion.
Think you'll need something a bit more elaborate.
You may want to look at old Neve schematics, I think the earlier ones also use Ge transistors (not sure though).
It is intended for small input signals (electric guitar), he shows performance at 2v p-p but if you put a couple of volts on the input, you'll probably end up with a lot of distortion. Not sure what is does at higher V+ voltages, probably more gain = more distortion.
Think you'll need something a bit more elaborate.
You may want to look at old Neve schematics, I think the earlier ones also use Ge transistors (not sure though).
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