Confused when the sound technicians start talking Hertz and Kilohertz? Here's a helpful article that roughly explains what all those crazy-sounding numbers mean.
From Above Ground Magazine:
The world of audio is wide, and measured in frequencies. (specifically Hertz or “Hz”and kiloHertz or “kHz” Every sound has a frequency range, and understanding this will make EQing a mix far easier. If you’re not sure where to start, here’s a basic rundown. This is a general guide, but this will provide a good point of reference.
Jack Conte of the mildly-famous Youtube duo Pamplamoose has written a blog post which breaks down the numbers and efforts behind their latest 28 day/24 date tour. His post is an interesting look at what any modern mid-level artist can expect to incur in their attempt to maintain a professional, full-time career in music.