Hello, guys!
Let me introduce my next monster: Ge-Mania.
It is RangeMaster+FuzzFace connected in series, each switchable.
The transistors I used are ГТ404Б (low frequency mid power npn, very leaky). Their sound is really mellow and juicy.
The problem of their essential thermodrifting control I decided this way: I added current meter in collector of Q2(FF) and bias knob with complementary trimmer in series in collector of Q1(FF). When bias knob was set at 12.00, trimmer was dialled to obtain symmetrical clipping of FF (1/2 VBatt). Then I found appropriate value of meter shunt in order to set pointer at zero point of scale (colour border of it). It is near 200 Ohms and thus it does not affect to sound. Also 100 mkF capacitor is connected here in parallel to avoid any sound losses on shunt and meter coil.
Now the usage of box is very easy and convenient: when pointer is at left side it means more hard clipping and the right position means the soft. Center position means symmetrical clipping.
For meter backlight I used 10 mm RGB monster LED with slow changing colours for more psychodelics.
inside (notice vintage Ge diode in RangeMaster):
When my daughter first time looked inside of this box she said: Жирные Железные Жуки!!
(By the way: letter "ж" looks like beetle and sounds very closely to germanium overdrive)
Multicolor plays:
Guts naked:
The pointer slightly moves during guitar playing.
