am revisiting my 2011 build with new learning, supercharging my superfuzz, and have a question re substituting a 'and-something-inbetween' pot for the tone 1 (unscooped) and tone 2 (scooped) switch.
basically there seem to be three ways this unscooped thing has been addressed.
1. standard univox superfuzz layout. two position tone switch, unscooped and scooped.
i like both the one and two positions, they are perfect as they are, so would like to keep them entirely intact, uncompromised and instantly available on the first two options of an on-on-on switch.
for the third on option. i would like to have a blend. the two ways i have seen of doing this are:
2. the derringer scoop mod to the univox superfuzz (on p16 of this thread).
full schematic https://i215.photobucket.com/albums/cc24 ... MyMods.jpg
this puts a 10k trimmer/pot between the bottom cap of the scoop stack and ground.
it also omits the 47k and the 10k resistor to ground which is used to balance output of tone 1 to tone 2 in the original univox schematic.
3. the wattson efy-6 (standard univox superfuzz with common mods built in).
full schematic https://www.freestompboxes.org/download/ ... &mode=view
this takes tone 1 to lug 1 of a 100k pot, tone 2 to lug 3, and takes the wiper to lug 3 of the volume pot (called 'balance' in the original superfuzz and 'gian' on the wattson modded version).
it also changes (doubles) the value of the high pass cap in the scoop.
i've got my superfuzz out of the box and wired up to a breadboard so can play around as far as finding something i think i like using these as starting points, but i wanted to know, from a purely technical perspective, which of the two tone1 and tone 2 blending option will give the most 'authentic' (as in 'true to the intentions of the original circuit') mix of the two tones?
looking at the wattson, the pot will give you one or other tone 'as nature intended' but when the 100k mix pot is in the centre position isn't that adding an extra 50k of resistance to each path. as this is the same for both does this cancel itself out as far as what you can hear and as what can be measured?
looking at the derringer, that loses 47k of resistance on the tone 1 path (unscooped). and is the scoop trimmer a more or less effective means of keeping the original two starting tones but allowing an authentic mix between the two?
and is there another way worth considering not covered by either of these alternatives?
i sort of understand the principle of what is going on in both cases, but not to the fine point of understanding which option blends the two with least compromise, in technical terms. working at the limits of my knowledge here and trying to push through to the next level.
would be grateful if anyone wiser than i (that's pretty much everyone then) wish to make a comment or pass a judgement, or have any thoughts or ideas about what i'm intending to do.
many thanks to derringer and amp surgeon (wattson) for posting their modded schematics here. much appreciated.