High Efficiency Speaker Asylum

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Original Message

What do you make of this? (Impedance curves)

Posted by pix on March 4, 2017 at 07:44:06:
Having tear my hair about having ARTA/LIMP to work with my computer, I decided to make the same setup, but using multimeters instead and making impediance curves in Excel.

By using a calibration resistor I got a deviation curve, which where subtracted from the real measurements. By doing so I think (hope) this is a fairly acurate measurement on my complete speaker setup (measured at the filter input).

So, What could be said about this curve?
Is it good, bad, worth the effort trying to be improved?