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Old 08-04-2015, 05:11 AM   #7361
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Join Date: Dec 2014
after many hours tweaking my truebypassed vox 847 my preferred settings are...

input resister - 100k
frequency cap - .009uf mojo cap
q resister - 40k
midrange resister - 1k
gain resister - 1.2ohms !
inductor - fasel yellow.
transistors - bc550

the gain resister (actually a trimpot) is way low but it needs to be to compensate for the higher input resister.

Last edited by mildew : 08-05-2015 at 07:00 PM. Reason: added data
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Old 08-05-2015, 05:46 PM   #7362
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Join Date: Dec 2014
current wah mod state is this.

input resister 220k

bass resister 1k

q resister 68k

gain resister back to 470ohms

pitch cap .009uf mojocap

added a stripboard SHO booster on output side.

Last edited by mildew : 09-07-2015 at 06:03 PM.
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