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How do I interpret THIS odd impedance plot?

guy48065

Member
Joined
Dec 20, 2019
Messages
63
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45
Beginner question--please be kind.
I just bought a DATS V3. I first used it on a crummy 5" car speaker with a whizzer cone and the free air parms looked as expected... including some small resonance peaks in the presence region due to the whizzer whizzing.
Next I tried it on the unusual ported 3-way speaker system I've described before and got a plot that is missing features I was expecting to see.
Where are the resonance & port peaks & dips? Why is the phase so flat?
This is good, I hope?

IMG_20240215_191411.jpg
 

Penelinfi

Senior Member
Joined
Apr 22, 2021
Messages
455
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342
1.5 Ohm impedance though.

I guess the capacitors along with "lossy" cabinet is doing something
 
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