PPIMV question

[stephenl]

I'm using a dual-gang 250kL pot as a PPIMV. They are in parallel with the power tube grid resistors to ground.

I notice that when I roll the pot back from full volume, that there is a slight loss in treble/sparkle. Its not huge and it doesn't get worse from there on. Can this be fixed by adding some "bright" caps across each pot?

[chief mushroom cloud]

um...that dual pot is supposed to take the place of those resistors...is this a LarMar you speak of?

[stephenl]

I'm using it as a drive compensation control in conjunction with a LP Power Scale control. Not that that really makes a difference, but KOC's instructions show to put it in parallel.

Other schemo's I've seen, have it in place of the grid leaks as you said.