I am interested in different sounds bass can make and all sorts of harmonics and was wondering how to get good feedback. The only feedback i can get is on the g string on the 7th fret(and only when its a little loud with distortion or some effect.) Is there a certain setting on the amp or technique to get feedback? what all do you actually have to do? I just thought of feedback when I listened to Iron Maiden prowler. even though its guitar, I thought it would be cool to try on bass.