I haven't tried it but Joe sent them with my order (resistors). Basically, you install the resistor between the tweeter and something else (apparantly you can't put it on wrong) I can't remember what else. The crossover maybe? Anyway, he told me that it will affect the soundstage some (in a negative way) and it will give you less detail in the high end. I love the way my M22's sound and never felt the need to install the resistors. I'm interested to know the differences in effect between the felt pad and the resistor. If the felt pad is a smaller mod I would be willing to try it. Joe really scared me with his "screw up your soundstage" bit.
