Rangeblaster Question

[doitle]

I breadboarded this a few months ago and was thinking about building it into a full working pedal recently but I have a question about the schematic. This comes from Fuzzcentral. The creator says they modified the original Dallas Rangemaster with a 1M resistor on input and output to reduce pops from the switching. Now normally you add a large resistor to ground on the input to increase the input impedance allowing for near full signal transfer. Don't you specifically want to avoid having a large output impedance which this pedal now has? I understand the merits of a pull down resistor, I'm just trying to further my understanding of pedal design.

[earthtonesaudio]

Adding resistors in parallel:

1/R1 + 1/R2 ... + 1/Rn = 1/Rtotal

...end result is Rtotal becomes smaller.

[R.G.]

...Now normally you add a large resistor to ground on the input to increase the input impedance allowing for near full signal transfer. Don't you specifically want to avoid having a large output impedance which this pedal now has?

No. Your concept of what a pulldown resistor does to input or output impedance is backwards, as ET explained in math.

Put another way, you cannot increase input impedance by adding a parallel input resistor. It can only decrease the input or output impedance. That resistor is big for the purpose of not reducing the input impedance any more than is absolutely necessary.