Originally Posted by milford30
I'm really not sure what exactly Ety does to tune their iems apart from the magnets reaction to different voltages to different frequencies.
What if we get rid of tweeters and woofers and stick it all with mid range speakers (mass production of one speaker is probably cheaper) with their respective high/low pass filters? Is it physically possible for a mid range speaker to have that high energy impact of a proper woofer even when properly amped?
Drivers exists that does the entire spectrum well, but it's what happens when you stick all the frequencies together at the same time, for example can it reproduce the decay of a bass note while say a high frequency note is playing at the same time? or will that be covered? after all there is only one magnet and there is a limited number of times the magnet can vibrate per second.
I do agree that all multi drivers are not prefect, the cross over points are a pain, and high driver count does not mean better. But just as in loud speakers, you can get a woofer provide much more drum impact then you can with a mid range speaker, so the need for more then one driver is justified for me.
I'm not sure what Etymotic does either... That's beside the fact though.
For the longest time, headphones were measured and tested using pink noise... There exists plenty of single-driver headphones that have that sort of extension on both ends with pink noise... Which is exactly what you stated, blasting all frequencies at once. There never is more than one frequency played at a time with anything, even if there is an awesome kick while there is a shimmer of cymbals going on... Why? Because recorded audio is still a function of time. As with functions, one in, one out. The magnet vibrates based on that function (not the current frequency it's trying to play, but that is related). Remember, the sound is generated as a wave, a wave has one intensity at a given point in time... That's all the magnet needs to do, one thing at a time (over real time).
You keep on comparing IEMs and speakers... They aren't the same... The wave doesn't need to travel as far and that dimension is essentially lost. With a speaker system, the driver you'd need to do a full-single driver setup is tough to get because it needs to travel a distance that is more than a few inches. They aren't the same system, so that analogy goes down the drain. But to answer your question, from a given distance, no matter how small, yes, if you properly damp a midrange speaker to flatten it, it will produce bass and treble fine. Please stop using speaker system analogies, they don't fit because of that notion of distance.
Time domain characteristics are more dependent on the environment than the driver itself. That deals with the housing (or room for speakers) as well as materials. So the question of reproducing decay isn't only in the driver, the housing has as much to do with it, so you can actually "tune" that to fix that issue.
You don't need more than one driver to do what you need to do with IEMs and headphones in general. Can you, yes. Does it make it any better? Debatable. You can get just as much impact with a single driver as with a multi-driver setup as the distance needed to travel is low (a couple inches, a few at most). Relative to the system, the drivers being used are huge in contrast to a speaker system in a room (speaker size vs volume).
Edited by tinyman392 - 4/28/14 at 8:44pm