Mike,
I grow tired of reading your extremely misguided comments, in many areas.
Get some experience with some cans that most agree change a great deal from break-in (most higher end sennheisers for example) or your opinion is far more invalid than ours.
If you had can listed in your profile that was known for dramatic break in, and still supported this position, I would respect your opinion for what it was (but still object to your crazy denials that we could possibly be right).
Fact is, your opinion is based off less first hand experience, and far more random speculation than anyone else who has written on this subject in this thread. Let alone scientific evidence.
MANY very well respected loudspeaker manufacturers include break-in information in their manuals. I think even you could agree that any break-in that could apply to loudspeakers, would also apply to dynamic headphones. Here is an excerpt from a Dynaudio loudspeaker manual (which no one could claim is not well respected):
Quote:
It is important to know that you just purchased Dynaudio speakers which contain newly manufactured moving driver parts which do not right away perform up to Dynaudio standards. A brand new Dynaudio speaker needs a certain breakin time period in order to sound harmonic, safe and beautiful as you can expect if from Dynaudio products. |
They also advise Quote:
to give them a 3 or 4 minute warm-up time to fully develop their breath every time you start to play them |
Through a very quick search of the web, I also found this website, giving hard, scientific data that fully supports the idea of driver break-in (especially regarding low frequencies):
http://home.hccnet.nl/ine.dick/p1.html
It's mainly a page describing some DIY speaker experiments and measurements, the section pertaining speaker break-in can be found under the "LF Driver" section, regarding measured T/S parameters. The rest of this guy's information is interesting as well, although fairly technical.
I'd love to see a respected, high-end audio company formally deny the existance of driver break-in. Also scientific data officially disproving driver break-in would be welcomed as well. However, I do not buy into personal beliefs and theories that do not even have at the very least, first-hand experience to back them up, let alone hard evidence.
-dd3mon