Hi all! This is a mod that I've not yet seen on the forums, though it's based on a mod from guitarnuts.com. The link is : http://www.guitarnuts.com/wiring/simplebtone.php, and an Andrew Rodgers is credited with it. Guitarnuts says: The tone controls work completely normally in positions one...
OK, then a parallel resonant LC circuit tuned to the wanted frequency, connected across either the pickup to volume point or the final output of the guitar, via the push-pull pot switch.
(What guitar would you be adding it to? Tele in your name is probably bit of a giveaway? That's one type I do not have..)
A section of a pot in series with the switch could adjust the depth of the cutoff either side of the peak.
What frequency (or string/fret) would you want it centred on?
For info, an LT700 audio transformer is nominally 550mH on the high impedance winding. They are 16x16x20mm, readily available and cheap. (Ignore the other winding).
With a 0.47uF in parallel, that gives a resonant frequency of ~313Hz, very close to an open high E string at around 330 Hz.
The frequency changes with the square of the capacitance change; using 1uF makes it around 215Hz, or 0.1uF gives 679Hz.
(Assuming the inductance and capacitance are in tolerance).
Excellent ! Thanks. Could you sketch out a couple workable RLC schematics for the push-pull?
I think the down position of the pot would just be something like 0.022 as a base brighter sound. Thanks, Marc