Hi guys! Am not sure whether this is the right place to post this though this does seems to be the most appropriate area...well, here goes: Rather curious actually: in speakers the cones, tweeters produce the sounds but what is it in a headphone that gives the fairly wide range of frequencies? Recently read about the electrostatic speakers: can anyone kindly enlighten me in simple language how they work? Is that the same principle as that in the headphone? Thanks!