When you try to listen to music through headphones you can reasonably hear the low end (lower frequencies). When you take the headphones off of your head and place them far enough away you only hear a tinny sound. When you are outside of a loud rock concert, maybe 1500ft from the source, you tend to only hear the lower end sound. ---- Why is this so. Here is my understanding, please fill in if I'm wrong. The lower end (longer wavelength) is less easily absorbed in mediums? The lower end from the headphones only really occurs because your headphones are in contact with your ear allowing the vibrations to transmit better? The higher frequencies tend to scatter more of small objects over longer distances? Power is a function of frequency, the higher frequencies deliver more power? Thank you!