i guess i need some theory before i continue trying stuff.

[birt]

ok here's what i got:

i have a feedback looper. i don't have a lot of effects at hand so i tried it with an uglyface and with a booster, both effects add volume so i could hear what the feedback actually does.

but when i get less resistance in the feedback path (the pot is turned so there should be more feedback) the effect in de loop just gets bypassed because the feedback path has less resistance than the effect in the loop.

so i thought i was smart (this is always a problem, when i start thinking that, things go wrong) and put a buffer in the feedback path so the path only works in one direction. i put the buffer in before the pot.

but now when i turn the pot to get more feedback, i get less volume. and i'm puzzled.

[Transmogrifox]

Sounds suspect of negative feedback to me--so to say the output of whatever is in your loop is out of phase with the input.  This is how an op amp is meant to be used.   The more feedback you give it, the lower the gain.

Try putting an inverting buffer in there, or a second booster.  You may also try it with just the uglyface.

[birt]

but in the loop is a one stage booster and in the feedback path a one stage buffer (i know every buffer is :p) so they should be in phase... i think?
same with the uglyface. in the loop is the UF and in the feedback path the buffer. signals should be in phase...