hip-hop

Been filling my head with current hip-hop bass rhythms, and it gave me a theory idea at work. I'm sure it's not new, but I did the math, so here it is: Like in harmonic cell theory where you analyze groups of notes by all of the intervals they share between them (major triad has a m3, M3, and...

I've always just played straight into a tube Ampeg so I don't know much about effects pedals for bass. But is there a pedal that can put a heavy low end effect on lower notes, that I think would be called sub-bass or a lower octave doubling?, and that could leave higher notes above a chosen note...