Resistor in parallel with tone cap

[roadtonever]

I had a little exchange with a guy that originally suggested this a while back:

Regarding your suggestion about adding a 5-10k resistor in parallel with the tone cap: Are you sure you don't mean in series? When I model a parallel resistor I see significant damping of the resonant peak in LTspice.

That's part of the intention, allowing three things:

1) Your tone pot won't turn to mud and drop off the highs at the bottom of the pot,

2) You avoid that nasty over-emphasized resonance you would get in that situation, and

3) There is now a greater area of the tone pot that you can attenuate the upper-mid resonance without unintentionally adding in too much resonance from the capacitor on the tone pot.

Overall a much better setup.

What do you guys think?

[JohnH]

I also tried modelling it. It does get rid of the extra mid resonance as you approach zero, and also reduces overall volume at minimum tone since the whole signal gets shunted by that new resistor. Getting rid of the hump can also be achieved by a series resistor, in effect, stopping the tone pot getting to zero. Fender do their Greasebucket control, which has an extra cap, but its basicly a series resistor on the tone pot.

At higher tone settings, the parallel resistor doesnt seems to do much

[xenod]

Series resistor makes more sense.

What would be a rough guess estimate for a value?

- In my case, hot humbuckers, 14k DCR @ the bridge.

Would 2.2k be about right?