which resistor to bias the Axis Fuzz?

Started by powerplayj, January 08, 2006, 01:55:30 PM

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powerplayj

After searching a bit, it seems the stock voltages are around

Here's the voltages from a stock Mayer Axis:
        2N3906            2N3904
        C- 3.20            C- 5.86
        B- 3.64            B-  3.25
        E- 4.34            E- 2.68


I replaced the 47K with a 22K and used a 2N2222A for the 2N3904.

My voltages are:

Here's the voltages from my version:
        2N3906            2N2222A
        C- 3.9            C- 6.2
        B- 4.0            B-  3.9
        E- 4.7            E- 3.3

I just wanted to tweak mine a bit closer to the stock pedal and see if the tone improves.  Assuming I need to adjust Q2, which resistor should I be concerned about?



Thanks,

Jason

builds completed: boutique fuzz, rangemaster, BSIAB2, PT-80, Tonepad wah, Ross Comp, Axis Fuzz, MOSFET boost, Thunderchief, Big Muff (triangle), Mr. EQ, Dr. Boogey,  Neovibe, Dist+, EA Tremelo, ADA Flanger, RM Octavia
next build(s): ???

powerplayj

nevermind...after switching back to the 2N3904, I decided I liked it better because it had more grit available, not as warm and also seemed to accentuate the octave effect better.  Plus, it was dead with the original pedal Q voltages.  I have come to realize I'm an Si Fuzz guy after this build!
builds completed: boutique fuzz, rangemaster, BSIAB2, PT-80, Tonepad wah, Ross Comp, Axis Fuzz, MOSFET boost, Thunderchief, Big Muff (triangle), Mr. EQ, Dr. Boogey,  Neovibe, Dist+, EA Tremelo, ADA Flanger, RM Octavia
next build(s): ???