Hi all, I have a spector professional series bass with EMG pickups. My bass seems to be getting too bright of a sound. It doesnt seem to be getting a round warm type of a sound. Are these types of basses just known for a very bright sound? Another problem stemming from the original is that I am not quite sure what the function is for the 4 knobs on the bass. The top middle one is volume, the right and bottom middle ones seem to control the volume of each pickup. The middle knob closest to the neck seems to not do anything at all. Can someone please give me a rundown of the knobs and their functions? My teacher seems to think that maybe one of the pickups isn't picking up sound properly. I completely turned down the bottom knob and cranked up the middle knob farthest from the neck to make the bass more bottomy and fuller sounding. Seems a bit drastic through. Any thoughts?