I'm a high school student who's just gotten into audiophile equipment and I was wondering exactly how different headphones differ from each other, along with what makes the ideal setup. This is purely out of boredom and curiosity. So here goes:
1. What properties make for an ideal sound driver? masslessness and no resonance?
2. What separates a company's best headphone of a similar design to their worst? Take sennheiser for example with their 5XX and 6XX line. Is it just driver weight and material?
3.What the are the diaphrams made from in dynamic drivers and BA drivers? Do BA drivers even have diaphragms?
4. What does impedance do, eliminate background static?
5. How is soundstage created? Is it from slight variations in the phase of each channel?
6. I know that our perception of frequencies from 20-20000 hz is non-linear, do linear headphones compensate so that our perception of the frequencies is linear, or do headphones simply put out a linear frequency response which we perceive as non-linear?
Just wondering because it seems like each company is trying to get the perfect sound, but they all go about doing it differently. I have no idea how most audiophile stuff works, so any type of answer is appreciated.