[jeeger]

I spent some time at www.headphones.com yesterday looking at the frequency response charts of some headphones (here).

looked at several charts (HD650, HD595, Ultimate Ears Super Fi...), and it struck me that the response of the open headphones almost always extended over a broader range of frequencies than that of the IEMs (or ECHs, whatever^^). What I am wondering is if the IEMs shouldn't be able to reproduce heights better than closed (bigger) headphones, since they have smaller membranes that can thus vibrate faster.

Sorry for the tricky questions, but I want to learn^^.

 

[ServinginEcuador]

IIRC the limit to the high-end of an armature design is ~14kHz.

 

[ppl]

these two Links should provide you with all the Information on the design of IEM Headphones you need.

this link gives a great overview of the How's and whys of IEM's
http://www.prosoundweb.com/sr/lsi/iem/101.php

The below link is a recent patent on a New Armature Design however i suggest you reed the 1st link first so as to get an understanding of the Term's and concepts affecting these devices.
http://free.patentfetcher.com/Patent...PN=20060133629

 

[jeeger]

Quote:

Originally Posted by ppl /img/forum/go_quote.gif this link gives a great overview of the How's and whys of IEM's http://www.prosoundweb.com/sr/lsi/iem/101.php

Many thanks for this information, I'll read it as soon as possible.