Like a good little soldier I did several searches, but didn't find what I was looking for. Does a "primer" exist on this forum outlining the basics of bass frequencies? If not, would some of you contribute a beginner's primer on this subject? I'm dialing in a new bass rig's crossover and realized my knowledge is really limited in this area. Since I'm playing a four string Jbass and biamping a single 210 cab and a single 15 cab, I'm interested in understanding more about the bass sound spectrum and what I should be shooting for. Thanks!