[udauda]

http://rinchoi.blogspot.com/2012/07/effect-of-break-in-fostex-t50rp.html
 
Ouch, I would have done so much better with the left REW measurement, only if I was not drinking $amuel Adams at that time.. 

 

[karlsonklam]

really cool testing - not a lot of response difference after break-in but the middle and low end look better.  Why did the post-break-in impedance drop? what does the gray trace which is hinged up indicate?

 

[joeyjojo]

Very interesting. The impedance drop is small, <2 ohms. FR up a bit around 55Hz but mostly unchanged.
 
I think the drop in distortion at the low end is the most striking thing. From near 2% at 30Hz to 0.2%.

 

[BlackbeardBen]

Great data set.  So each graph pre/post break-in is an average of 10 measurements, and the headphones remained in place the entire time until you accidentally bumped the left channel?

 

[delusionist]

Is that your blog?

I have bookmarked and I am gonna print some of the posts to read. Very interesting.

 

[Magick Man]

Very interesting. The impedance drop is small, <2 ohms. FR up a bit around 55Hz but mostly unchanged.

I think the drop in distortion at the low end is the most striking thing. From near 2% at 30Hz to 0.2%.

That's exactly what Tyll encountered, a significant drop in bass distortion. I'm still mulling it all over and formulating an opinion about the subject.