Ultimate Ears UE18+ Measurements

Discussion in 'IEM Measurements' started by purr1n, Feb 13, 2018.

  1. purr1n

    purr1n Finding his inner redneck

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  2. spoony

    spoony Spooky

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    That treble looks super extended for an IEM.
     
  3. Serious

    Serious Inquisitive Frequency Response Plot

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    ... if that were a 5db/division scale that would actually be very good

    Real extension and smooth treble can only be had with DD IEMs

    Marv any chance you could post an excess phase graph? I always find that interesting with BA IEMs as it's like a "coherency over frequency" graph. For example Andromeda has lower excess phase for most of the audio band than UERM.
     
    Last edited: Feb 13, 2018
  4. purr1n

    purr1n Finding his inner redneck

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    Last edited: Feb 13, 2018
  5. shotgunshane

    shotgunshane Floridian Falcon

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    UE iems tend to have very good extension, especially for armatures. The RR extended to 18k if I remember right; albeit shelves down a bit.

    While many dynamics have great extension, very few have been smooth to my ears.
     
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  6. purr1n

    purr1n Finding his inner redneck

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    The UE18+ does indeed sound extended to my ears, but the pervasive warmth detracts from this, makes the air less evident. Ugh.
     
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  7. purr1n

    purr1n Finding his inner redneck

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    UE18+ excess phase
    UE18+ excess phase.png

    Andromeda excess phase
    Andro excess phase.png
     
    Last edited: Feb 13, 2018
  8. Serious

    Serious Inquisitive Frequency Response Plot

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    The timing reference is off. Let me show you how my REW plot looks

    EDIT:
    Here's UERM:
    UERM R FR+EP.png

    And here's the Andromeda (3.3 Ohm OI) for comparison:
    Andro FR+EP.png

    Note how the phase weirdness only starts above 2kHz with the Andromeda, most likely because the crossover frequency is higher.
    Single driver IEMs (BA or DD, doesn't matter) will have no excess phase at all. Perfectly flat, straight line unless something else is off in the measurements.

    Doing it by hand in ARTA probably sucks. 0.001ms matters here.
     
    Last edited: Feb 13, 2018
  9. purr1n

    purr1n Finding his inner redneck

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    Let me redo those. I didn't set the windows correctly.
     
  10. purr1n

    purr1n Finding his inner redneck

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    Yeah, I'm not sure I'd try ARTA for this one.
     
  11. Serious

    Serious Inquisitive Frequency Response Plot

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    Well, to me that's true of DDs and BAs. Of course I've not heard everything, but the only IEM that has proper treble that doesn't sound like shit that I've heard is my RE-272.

    Marvey, we can also guess the crossover from distortion and impedance plots, not that it really matters with these IEMs.
     
  12. shotgunshane

    shotgunshane Floridian Falcon

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    Not to go to far off topic, but for me, most Hifiman iems have pretty uneven treble. The 272 might have been their best in treble though. I’d have to hear them all again to say for sure. One of the smoothest, while extended and not shelved down trebles for me, was the Sony MH1/C. So much potential. Way too much sub bass. A great dynamic for little money non-the-less.
     
  13. purr1n

    purr1n Finding his inner redneck

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    UE18+ impedance (and electrical phase)
    UE18+ Z.png

    Explains why I preferred lower Z or zero Z sources.
     
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