I am not sure "smart" is the right word.Got busy for a couple days. Can't wait til this holiday crap is over. Thanks, Holmz, for sharing your knowledge! Unfortunately, most of what you're talking about is a tad over my head. Consequently, often times the price I pay for not being very smart is learning things the hard way. So unless you foresee major flaw or impending doom with my schematic, I'm going to go ahead with it.
I guess I should ask more simply; do you see the increased resistance of the signal at the amps after passing through doubled-up pots as being a serious issue? How detrimental are we talking?
If you had HS electronics, then that would be handy. If not, then you have some significant work ahead of you.
It is pretty much HS level, but it will be like taking that course without the teacher to help... if you do not have the background in it.
Maybe you can make a picture of how you are planning on wiring those in?
I suspect it would be attractive to just put it "in line", but I think you need it shunting between the single ended wire and the ground.
And probably you want a resister in there as well...
Maybe 2 of them, with one in line and maybe 1k, and then a 100 ohm before the pot... that would likely work best with the 10k pots.
If you are using the 50k ones (in line) then you would want maybe a 5k resistor between the signal and ground.
Whatever you do, just do it on a bench first.
Maybe use a 1.5V battery and a 600 ohm resister... then you should get between 0.15V and ~1.5V if you have a 20dB max attentuation.