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Impedance variations in tweeters

duanebroduanebro
in DIY
I ran into this while testing drivers with LIMP:

Published fs is 1475. So the yellow line is right on. The second tweeter (green) has a higher fs. I also tested a pair of Dayton ND16 tweeters. And they had a similar graph/issue. Just at about 1k higher. What does this mean? Anything?

Comments

  • jr@macjr@mac
    No worries. 
    duanebroMzisserson
    I have a signature.
  • duanebroduanebro
    The kb drivers are right on btw!
  • MzissersonMzisserson
    I second JR. Also what I look for in tweeters is a second hump, or plateu just past fs as the Z is normalizing which usually means a leak somewhere. 

    Also, any squiggles after the FS which can show motor issues  
    duanebro
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