Spaceman titan 2

Started by bonehead1972, November 19, 2019, 04:49:32 AM

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bonehead1972

Hi guys,
I am not sure if it's ok to post a schematic from another  forum..if not-pls delete it.

So I built  the spaceman  titan 2 based on this layout.

http://guitar-fx-layouts.42897.x6.nabble.com/Spaceman-Effects-Titan-II-td45088.html

It sounds very good, but gets an oscillation  at last 10-20% on fuzz knob. It's still unboxed and the battery wires are a bit long.
I wonder whether  its oscillating due to the layout... looks (to me) that the input cap (33nF) sits suspiciously close to the out in this layout. Or may be you can spot other reasons for the problem.
Any help would be appreciated!
Thanks

antonis

Quote from: bonehead1972 on November 19, 2019, 04:49:32 AM
Or may be you can spot other reasons for the problem.

Place a NFB cap between Collector & Base of the 3rd transistor (the one with gain pot on its Emitter..)
(you may start with 100pF and lower its value till you get maximum gain without oscillation..)
"I'm getting older while being taught all the time" Solon the Athenian..
"I don't mind  being taught all the time but I do mind a lot getting old" Antonis the Thessalonian..

bonehead1972