Quote:
Originally Posted by shannow 
Sorry I don't believe in burn-in . There's so many topics about this on different speakers and headphone ... why nowhere to my knowledge have I seen two speaker spectrum curves and analysis from a new one and the same one after the burn in ? If it cant be measured or detected it does not exist (neither the manufacturers talks about it)....
I'm very sorry if I sound arrogant but to me burning in speaker is just a raver convenient sellers trick to say "keep what i've sold you" .
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Actually, at least for dynamic speaker drivers, I anm told that you can measure the "burn-in" effect by measuring the parameters before and after burn in. They will usually be different. Richard Vandersteen told me that he breaks in his woofers (and he is not a guy to do that just 'cause), interestingly, by wiring a bunch in series and plugging them right into the 120v 60 cps power line! So that the speakers you buy performs out of the box the way he designed it.
When you think about it, drivers are mechanical devices (really, a motor) and it's not that hard to believe they need to be run in a bit...
Quote:
Originally Posted by shannow 
I may be a very bad audiophile that simply can't hear much ...
But to me the IE8 is incredibly close to the CX300 , very little difference (a bit cleaner) and certainly I won't hear anything more with the IE8 than I can with the CX300 .
Never than less with my bad hearing when I put back the ATH-A900 on it's really mind boggling it's just so far beyond what the IE8 can even dream to provide my ears ... it really is two worlds apart and the IE8 is just so close to a cheap 30$ earphone ...
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Well, if your IE-8 sounds like a cheap $30 earphone...
The IE-8 is not easy to get positioned properly in one's ears. But here's a hint. Sennheiser in the little book tells you not to push them far into your ear (perhaps due to concerns about deep, tight insertion and possible damage to the ear, I don't know). I have come to the conclusion that they MEAN it and tuned the earphone for the non-deep ear environment.
When the IE-8 is too far away, it sounds bass light and has a hot lower treble. When it's too far in the ear, the midbass becomes overpowering. What I did was to select a tip that kept the phone from going very far in my ear, then pushed on both earpieces to move the earpieces further in the ear while music plays. As you go in, you will hear a spot where the midbass, though still strong, minimally masks the upper bass and midrange and the shouty treble smooths quite nicely. This is easiest to hear on female vocals (I used Sandy Denny's voice on Fairport Convention's Liege and Lief, the bass in the piece can be used to judge the midbass, also). When you find that spot in your ear, the challange is to find a tip that will hold the earpiece there under normal insertion! I also think that you don't want too tight a seal...
My suspicion is that this is too much for most people who just want to buy a IEM, put on a tip and slam it home, and I can understand that. But the point is the IE-8 can sound quite good under the right conditions.
Kevin