Weird request, huh?
Here's the story:
I have just modified a bass by adding a MusicMan StingRay pickup and 2 band (boost only) StingRay EQ. The results are terrific, but I want to find a way to tame the treble, which can be fierce when boosted over half way and is still present when the pot is turned right down (i.e. zero boost).
Now, I know that some of you will be tempted to suggest using different value pots or modifying the circuit etc., but I am looking for a very specific solution
to this problem
I have fitted a concentric pot to use as the master volume on the inner shaft (top knob) and I want the outer shaft (bottom ring/knob) to act as a passive tone control that will affect the treble control only
. Onto that 500k stacked pot, I have soldered a tone capacitor, just as you would for a passive (Fender) tone control.
What I need to know now is how would I wire this into the treble control so that it is permanently connected and will leave the (active) treble functioning normally when the passive tone pot is up full, but will act on the signal from the active treble (regardless of where that active treble is set) and reduce the clarity of the signal
? Which lugs on each pot would I connect with each other?
My guess is that I would need to interrupt the path of the wire(s) that feeds the active signal back out of the treble pot and route it thru the passive tone pot, but I just don't understand these things well enough to know which wires do what
My active preamp has three (yellow) wires coming out of it and going directly to the treble pot. I think that it's the same as this one ...
Could I interrupt one (or more) of those three wires with my 'in-line' tone circuit and still hear the effects of both the active and passive tone controls on the treble output? What do you think
Finally, I recently asked for help with a different solution to this problem and was very pleased to receive this diagram from lineman6
Unfortunately, I have a very limited understanding of guitar electrics and when it came to wiring this up, I couldn't figure out where the rest of the wires should go
. Embarrassing, I know.
So, once again, I throw myself upon the mercy of the assembled experts. I really hope that someone can help me achieve this, because this is a truly great bass waiting to happen
. Thanks in advance.