Ultimate Ears Reference In Ear Monitor UERM Measurements

Discussion in 'IEM Measurements' started by purr1n, May 14, 2016.

  1. purr1n

    purr1n Finding his inner redneck

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    Ultimate Ears Reference In Ear Reference Monitor (UERM) Measurements

    Posting these because so many members have them and because they are good reference. I am also going to start providing impedance graphs for IEMs because this is something that is very crucial.

    Ultimate Ears Reference In Ear Reference Monitor (UERM) Frequency Response (0db REL = 100db SPL)
    UERM FR.png
    Resonant peak near 10k is a measurement artifact caused by the coupler. Take anything after 8-9kHz with a grain of salt because of the limitations of the coupler.

    Ultimate Ears Reference In Ear Reference Monitor (UERM) Distortion (at above FR levels)

    [DEFUNCT]

    Ultimate Ears Reference In Ear Reference Monitor (UERM) Impedance and Phase (electrical)
    UERM Z.png

    Note: There is a 20 degree phase shift at 20kHz (starting at 10kHz) and 10% impedance roll off at 20Hz (starting at 50Hz) inherent with the impedance measurement apparatus. When I have more time, I'll build a proper system for this measurement; but the current results should still give us the gist of things.
     

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    Last edited: Aug 23, 2016

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