Tube Amps / Music Electronics
|For current discussions, please visit Music Electronics Forum.||New: view Recent Searches.
New: visit Schematic Hell!
The sunn still shines online!
|Listen to great tunes streaming live right now!|
|6/2/2000 6:51 PM|
||AMZ Sixties Fuzz questions...|
About that 'Sixties Fuzz' that AMZ had up.
Found the SK3020 transistor at Mouser but...
That SK3005 transistor:
Sorry I'm all questions but you guys are awful good at this stuff.
|6/4/2000 7:40 PM|
|Synthbum||Re: AMZ Sixties Fuzz questions... once more|
Does ANYONE here have any answers?
Sure would appreciate some.
Sorry to bother you guys again about it.
|6/4/2000 8:39 PM|
In my common beginner questions page, there are replacement transistors listed for both germanium and silicon NPN and PNP transistors.
You can try those. I doubt most people have built this circuit.
|6/5/2000 7:29 PM|
I built on using 2n390x transistors. Kind of cool very square wave gate type. This was awile ago I ended up taking it apart
|6/5/2000 8:34 PM|
||Re: AMZ Sixties Fuzz questions...|
Thanks much! I was wondering why an uncommon transistor was specified for a newer design. Like maybe these SK30XX had some special characteristics or something. I figured plain old NPN Si's should work but thought I'd best check.
|6/7/2000 4:43 PM|
|Synthbum||AMZ Sixties Fuzz... found out.|
Okay - If anyone else decides to try one, they'll want to know. That obscure SK3005 (Q2) is PNP Ge, not specified as such on the AMZ schematic (currently unavailable). The SK3020's (Q1 & Q3) are NPN Si small signal, available from Mouser.
No designer here but I expect the Ge transistor at Q2 is there for it's distortion characteristics.
Both transistors indicated are Harris manufacture. Looked them up using FLIS, the Federal Logistics Information System, a DOD CDROM database used where I work. Plenty technical specs listed but not hfe.
Just a little FYI.
|6/7/2000 5:11 PM|
If you build it you might want to change the input buffer a bit. I would start with a .01 input cap, 470k b to +9v, 1meg b to ground, the rest the same. IMO this is a better buffer setup using 9v. I would use any NPN low noise Si transistor >200hfe for the buffer.
|Page 1 of 2||Next>||Last Page>>|