I have a question about the Ohms load when adding a pot in series. When I first heard of this mod the first thing came to mind is that I'm not only cutting bass but adding treble since I'm adding resistance, which may not be what I really want.
I tried this mod but it seemed even with the bass rolled in (pot bypassed, mostly) that it was still too bright.
I have it reversed where it's max (bass) signal at 10, and bass-cut at 0, but I've had it the other way around as well with similar results. (This point is irrelevant, I know)
4 reasons I can fathom:
1- adding a 500k in series with the 500k volume is essentially 1m and thus too bright for my tastes.
2- being I used a 500k pot it may not be resisting well enough and some signal is going through the cap even with bass rolled on.
3- I screwed up and have absolutely no idea what I'm doing lol
4- a combination of any of the above