CoolCat i am from germany and it wasn´t easy to understand the long article with my school english. I have the same problem here too and don´t understand all. As example i had to look in my dictionary to understand your last posting right.
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fernandoesmaron-
People in the US have to use a dictionary to read my posts too!

I apologize and will try to write clearly. Your comment made me laugh, at myself..thanks.
short:
1) The article you posted was interesting.
2) I have a friend that has a Masters degree in Physics and enjoys Home Theater and Audio.
2a)the sound of Yellow Kevlar is no different than Black Kevlar.
2b) the important factor with Kevlar is the: thickness and weave.
3) after years of useage, even the Kevlar weave will loosen and may sound slightly different after the weave loosens.
"proofs in the pudding" is old bullshit- slang.
Example:The real "proof" is when you actually taste the pudding yourself, not someone telling you the pudding tastes great.
8.2a threads had numerous quality control issues. led's blown, tweeters blown, drivers not working, amplifiers crackling, speakers not showing up for 6 months!!! $$spent sending them back for refunds...
So is the IAG article true, in stating their quality control is AWESOME!!????
where's the proof this is true?
proof in the pudding is the threads from people here who actually bought them and listened to them.
i haven't seen anything negative on the passive 8.2.