Small Bear germanium resistor values

Started by thenameivechosen, February 11, 2006, 10:58:15 PM

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thenameivechosen

The germaniums are for a 69 boutique fuzz face I'm preparing to build, and the resistor values I got from Small Bear are:

R3: 39K
R4: 680ohms
R5: 8.2K
R6: 120K

Problem is, I don't see exactly how these correspond to the R3, R4, R5 and R6 on the layout I'm using - i.e., this one:

http://www.generalguitargadgets.com/diagrams/fuzzface_b_lo_pp3.gif

I can sort of guess at some correspondences, but I'd really prefer to be sure.  I'm obviously a total newbie at this. 

Any help steering me in the right direction is much appreciated.

Cheers,

Marcel

PS: Incidentally the Q values, if anyone's interested, are Q1: 92 and Q2: 188

waldo041

steve has his tranny's tested in his "Bear Face" fuzz circuit.
http://www.smallbearelec.com/Projects/BearFace/BearFace.htm

so you would have to correspond the resistors from one schematic to the next.

http://www.generalguitargadgets.com/diagrams/fuzzface_b_sc_pp.gif

in the GGG Boutique Fuzz a 10k trim is being used so skip r5(bear face schem) = r5 & r9 (boutique fuzz schem).

Boutique Fuzz Values                         Small Bear values(Bear Face)
r2 33k             change to                     r39k 
r4 220 ohms     change to                    r4 680 ohms
r3 100k              change to                   r6 120k

hope this helps.

peace,
waldo

thenameivechosen

Hey Waldo,

Very cool!  I'd actually originally looked at Steve's Bear Face circuit to try to identify correspondences and came up mainly with what you said, but I really wasn't sure.  It's great to have someone confirm it for me so clearly.  Much thanks!