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Thiele Small : DC resistance too high

2K views 9 replies 2 participants last post by  globulegl 
#1 · (Edited)


I need to measure the Thiele and Small parameters.
I calibrated my sound card.
I calibrated my measure.
I use 50g playload (mms= 100g)

Uses resitances in my soundcard inputs, an amp and a resistance of 16 ohms Rsense. I tried different resistance value. It's still the same error.

RE My hp fact 5.4ohms

What can be the problem ?
thanks for your answer
 

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#9 ·
The phase of the measurements looks very strange, that is why the parameter fit is not working. Can you please make a measurement of a resistor in place of the drive unit, with the sweep range set to 0 Hz to 20 kHz, single sweep, and post that mdat?
 
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