Fanmusic E6 IEM Measurements

Discussion in 'IEM Measurements' started by purr1n, Jun 9, 2016.

  1. purr1n

    purr1n Finding his inner redneck

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    Last edited: Aug 23, 2016
  2. Serious

    Serious Inquisitive Frequency Response Plot

    Friend BWC MZR
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    Why is it that some dynamic IEMs have these narrow driver resonances between 1-3kHz that come with distortion spikes - in this case at about 1.2kHz. Otherwise - looks very bright. I'm assuming some damping could help here. The midrange up to 2kHz actually looks close to the UERMs. It's a dynamic driver, so I'm assuming the perceived treble extension is better than the plots would suggest?
     
  3. Kunlun

    Kunlun cat-alyzes cat-aclysmic cat-erwauling - Friend

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    Off the shelf driver into off the shelf housing, perhaps? Really need to use BAs if that's the approach. A dynamic will get resonance spikes unless the housing and driver are carefully paired.
     
  4. Serious

    Serious Inquisitive Frequency Response Plot

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    It's just that I'm wondering where these very narrow resonances come from. In the FR it's not more than a small dip or peak, but there's also almost always a big distortion spike and/or a resonance in the CSDs. Usually driver or enclosure resonances have a lower Q and higher amplitude.
    In some cases it's also a QC problem: One channel in my Carbo Tenores has it, the other doesn't.

    EDIT: Also interesting that the distortion lowers (!) so significantly at the resonance(?) at around 1.6-1.7kHz.
    Both of these also don't seem to show up in the impedance plot. Interesting. Does that mean it's an enclosure thing?
     

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