I just bought a larger amp (Ampeg BA-115) and a bass with an active pre-amp + active pickups (Cirrus 5 BXP) about 4 months ago. Before that, I had just like a beginner bass with tone knob, and a small practice amp that, with the two together, had basically no EQ freedom. As of now, I have many EQ options and things to configure to form my sound. I have gotten more knowledgeable, but still, am ignorant of how to propery use EQ. I don't know how to tweak and form sounds through EQ. Like, some notes seem louder than others, and I don't know why. 11th fret F# on G string is like INSANELY loud but the open D string isn't near as loud. I don't understand why that is...I figured it's something with EQ. These are some questions I have: 1.) Is there a range for each sound category? Like, are there a select range of notes that are controlled by Mid, Treble, and Bass? 2.) My low E seems to be quieter than my low B and A. Why is this? 3.) My low A seems to boom way louder than any of the other strings. How do I fix this? Mainly my question is, how to have defined high end, with a punchy booming low end. I can't seem to figure it out. I just don't know how to fine tune my sound and get a balance from frets 1-24 on every string. Is it my amp or bass quality, or does it just sound like an EQ problem to you guys?