I am wondering if anyone else has experienced this or has any thoughts on how to fix this problem. I experimented with a couple of different basses and what seems to happen is when playing with an active pickup bass the bassman starts to fart when playing lower than the G (on the E string). However, this does not happen with passive basses.
It's pretty simple really. Turn down the volume on your bass. You're overdriving the input on the Fender.