I wanted to share this with everyone; just saw it online: http://www.macrumors.com/2014/09/10/philips-fidelio-m2l-lightning/  

OT in another thread made me think about making a thread on this subject. Probably 99% of us know how drivers and amps work, but for those that are not clear on the subject I want to write a simple answer:     DC, modulated or not, will only move the cone into one direction. This doesn't...