I am a newbie, and have been setting up the fm3 with one of the celestian frfr speakers. I have been calibrating things using the bassman because it is so clean. I also had some unwanted low end distortion.This
I struggle with this for a long time
I found the cause for me to be that my p90 pickup poles were a part turn too high on the low strings. The p90s were actually distorting when i hit the strings hard. The fm3/frfr amplify that - it isn’t as noticeable through a tube amp or guitar speaker. After i adjusted the pickup pole heights i get the piano like clean sound i was looking for. I have to hit the strings pretty hard to get that pickup distortion now.



