READ FIRST!!! Measurement reading guide, equipement setup, settings, disclaimers etc.

Discussion in 'IEM Measurements - La Cenric's IEM Playhouse' started by La Cenric, Jun 24, 2017.

Tags:
  1. La Cenric

    La Cenric Friend

    Staff Member Friend IEMW MZR
    Joined:
    Dec 12, 2016
    Likes Received:
    736
    Dislikes Received:
    0
    Trophy Points:
    93
    Location:
    SG
    Home Page:
    All measurements are performed on an IEC 60318-4 (formerly 60711) compliant setup.

    IMG_4956.JPG

    Frequency response settings:
    • Sine-sweep
    • Sequence length: 32k
    • Sampling rate: 48,000Hz
    • Output volume: generated to -10dB
    • Log-frequency sweep
    • 10 sample average
    • -15dB/0dB/+15dB scaling
    CSD settings:
    • dB range: 40
    • Maximum frequency: 20,000Hz
    • FFT length: 1024
    • FFT block shift: 6
    • Maximum number of FFT blocks: 60
    • Apodizing window rise time: 3ms
    • Start point: 2.500ms
    The rest of the settings should be default or self-explanatory.

    DISCLAIMER:
    • Comparisons with measurements from other rigs are not recommended due to scaling, settings and/or minute physical differences affecting response. However, they are meant to follow the 318/711 standard so measurements should be more similar than different.
    • Output impedance can be assumed to be <0.5ohm.
    • This is all a learning process for me, so expect changes along the way. There are probably some things I'm doing wrong and I'll be diligent in seeking them out.
     
    Last edited: Jun 25, 2017
  2. jowls

    jowls Never shitposts (please) - Friend

    Friend
    Joined:
    Oct 3, 2015
    Likes Received:
    4,076
    Dislikes Received:
    1
    Trophy Points:
    113
    Location:
    43°S
    ‘Staff Member’? Well deserved!

    Will you be revisiting many of the previous IEMs on the new rig? Andromeda might be useful to people, as a point of reference...
     
    jayeshrc likes this.
  3. La Cenric

    La Cenric Friend

    Staff Member Friend IEMW MZR
    Joined:
    Dec 12, 2016
    Likes Received:
    736
    Dislikes Received:
    0
    Trophy Points:
    93
    Location:
    SG
    Home Page:
    Well less actual 'Staff Member' and more 'guy with pinning privileges in his own subforum' :p

    I'll be trying to measure some more IEMs definitely, but as I'm back in Australia it'll be a lot harder to acquire what I want. Hopefully Jaben would loan me a ER4...
     
  4. TomHP

    TomHP Facebook Friend

    Joined:
    Nov 24, 2016
    Likes Received:
    172
    Dislikes Received:
    3
    Trophy Points:
    43
    Location:
    Taiwan
    What's the make of the 711? Not seen that one before. The black ring tells me it's not a GRAS or B&K :D
     
  5. La Cenric

    La Cenric Friend

    Staff Member Friend IEMW MZR
    Joined:
    Dec 12, 2016
    Likes Received:
    736
    Dislikes Received:
    0
    Trophy Points:
    93
    Location:
    SG
    Home Page:
    It's neither. ;)
     

Share This Page