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The effect of break-in: Fostex T50RP

post #1 of 6
7/17/12 at 3:56am
Thread Starter 

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.. beerchug.gif

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post #2 of 6
7/17/12 at 10:28pm

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?

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post #3 of 6
7/18/12 at 4:25am

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%.

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post #4 of 6
7/18/12 at 5:10pm

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?

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post #5 of 6
7/18/12 at 7:20pm
Is that your blog?

I have bookmarked and I am gonna print some of the posts to read. Very interesting. biggrin.gif
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post #6 of 6
7/20/12 at 12:14am
Quote:
Originally Posted by joeyjojo View Post

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.
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