Just got a new bass it's a Spector Rebop 5, it's my first active bass. So I plug it into my GkrbIII head and my Ampeg 4X10 cab, it sounds like butt. My friend who plays guitar tells me to turn my head down really low and zero out the eq. and turn down the amp output to about 5. Then to turn the volume and tone knobs up to about seven on my bass. Then start adding treble, mids, etc. to where it's not muddy and sounds nice and when I turn up the volume it should sound good.. Is there any procedure or technique that is recommeded for establishing ones tone? What do you guys recommend so my tone doesn't suck?