I know you are supposed to put in your output impedence and sensitivity per IEM.

For my Blessings 3 I put: 14.8 @ 120

For my Monarch MK3 I put: 18 @ 99

I get totally different results:

When listening to the Blessings 3 “loud enough” is around 100-105 dBSPL.

When listening to the Monarch MK3, “loud enough” is around 80-85 dBSPL.

The only thing I can think of that would cause this is that one of the manufacturers spec sheets is wrong? Moondrop lists a potential variance of +/-15% on the output impedence, but even with those adjustments it doesn’t come close to what I’m hearing from the Monarch.

Any tips?

  • LightBroom@alien.topBEnglish
    1·
    11 months ago

    The SPL calculation does not reflect reality and should be ignored mostly.

    There was a thread on their forums for this exact issue and how displayed 100+ dB SPL felt like 75 dB SPL and their support wasn’t very helpful.

    They said it’s maths done in a vacuum and that’s pretty much it, it’s not an actual measurement so just ignore it.

    • TURBO_SCROTUM@alien.topOPBEnglish
      1·
      11 months ago

      My guess is that whoever in their forums had this issue had a similar unit conversion issue as myself

  • iokislc@alien.topBEnglish
    1·
    11 months ago

    Qudelix reports dB(Z) vs something like Apple AirPods via iOS that reports dB(A).