Measuring impedance with multimeter

Of course it is not "the only answer" but I wanted to avoid endless hackery and half baked solutions propping up here.
DATS is pretty comprehensive, allowing the measurement of drivers, entire crossovers and every component thereof. 
It is inexpensive, USB driven and pretty accurate. Certainly accurate enough for Magico to use (but not of course alone).

Dayton Audio DATS is the only answer to this question.

You can measure speaker impedance using Room EQ Wizard and a home made harness.


https://www.roomeqwizard.com/help/help_en-GB/html/impedancemeasurement.html


I personally recommend DATS V2 as a complete, out of the box solution:

http://www.daytonaudio.com/index.php/dats-dayton-audio-test-system.html
Around $99 at Parts Express

@recluse
Here, read this:
https://speakermakersjourney.blogspot.com/2016/12/crossover-basics-impedance.html