Electrovoice 18" Woofer: smallish Magnet; only 2.3 ohms?

rodman99999

thanks for the clarifications. 

Now I see the spec sheets have a separate DC resistance line, thus the 15W link I posted must be a 15WK.

The 18" drivers I found, the foam ones in the Model EV-Six are NOT 18W or 18WK

18W and 18WK are bigger versions of my 15W (or 15WK), with monster magnets as you would expect

https://www.manualslib.com/manual/43604/Electro-Voice-18w.html

the Model EV-Six has 1/2" thick foam cones, the smaller magnets.

I don't know what their impedance was, or, if the DC resistance of 2.4 ohms is 'good/normal' or problematic.

??? Anyone know the specs of the 18" 1/2" thick cone driver???

here is a 18Wk (see the small k stamped into the label) from a Patrician

https://www.ebay.com/p/28028667707?iid=254883146782

     If your drivers did come out of an EV Six system: they should be a nominal 8 Ohm, far as what your amp's output will see, regardless of how they measure with DC.

     Everything changes, depending on the way the woofer is loaded and it's design parameters.

      ie: https://audiojudgement.com/speaker-impedance-curve-explained/#:~:text=Speaker%20impedance%20is%20not.... 

the prior 12/15/18 W's and WK's used huge alnico magnets

the 18" 1/2" thick foam driver uses a ceramic magnet, here are decent photos of a Model EV-Six with that foam woofer

http://www.fisherdoctor.com/ev.html

Vintage Electro-Voice Info, click on any individual image

http://www.hifilit.com/hifilit/Electro-Voice/Electro-Voice.htm

says the K versions were 3.2 ohms, "for Klipsch K Type Baffles"