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FAL - Treble Booster Germanium

Posted: 08 Apr 2017, 21:58
by modman
1 x NKT 216 Germanium transistor,
Different from this FAL Treble Boosters with 2 si transistor

Re: FAL - Treble Booster Germanium

Posted: 09 Apr 2017, 01:11
by pinkjimiphoton
hey bro, i actually have the case from one of these and always wanted to fill it with the proper circuit.
any chance of a shot of the bottom of the board please?

Re: FAL - Treble Booster Germanium

Posted: 10 Apr 2017, 05:46
by Motter
Based on the component values, it looks like it could be pretty similar to a Rangemaster. Biased with a 100k/330k divider to the base, 3k3 emitter, axial cap on the input and the tropical fish on the output. Still, no apparent volume control or bypass cap...

Re: FAL - Treble Booster Germanium

Posted: 10 Apr 2017, 05:51
by Motter
On second thought, that 3k3 is probably on the collector, with the emitter straight to ground. About as simple as it gets...

https://en.m.wikipedia.org/wiki/Common_emitter

Re: FAL - Treble Booster Germanium

Posted: 11 Apr 2017, 12:35
by modman
pinkjimiphoton wrote:hey bro, i actually have the case from one of these and always wanted to fill it with the proper circuit.
any chance of a shot of the bottom of the board please?
hi, these pictures were taken from a current Reverb auction, this is all I've got, sorry.