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Re: Details ...
Author: Martin Schneider/Neumann
Date: 09/12/2012
We should not begin the measuring vs. listening & feeling debate. It doesn't lead anywhere.

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In my last 20 years of development, measurement & listening tests I've fooled myself often enough to know that I typically need
- a full set of specific, detailed measurements,
- exact description of the recording setup and recording space, or recordings made by myself,
- comparisons, by measurement and listening, where only ONE single parameter was changed at a time, and all other parameters were kept absolutely identical,
- lots of time, to assess results, modify the setup, re-do measurements and listening tests,
- standardized, repeatable techniques
- etc etc.

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Sound files can help to assess defects, but rarely help to tele-diagnose "sound quality". (Whatever "sound quality" may mean, in an instrument like a microphone) See above, "exact description...".

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The concept of "breaking in" a capsule diaphragm is a nice thought, presumably taken from loudspeaker practice. Still, an electrostatic microphone is not an electrodynamic loudspeaker. At 140 dB SPL (full blast trumpet at 4 inches), the diaphragm of your U87 will have an excursion in the 1 micrometer (!) range. A loudspeaker, in comparison, can move by tens of millimeters!
BTW, any means to measure & test your loudspeaker, before & after 60 hours signal?

Best regards,
Martin Schneider / Neumann Mic. Development  
 
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