Like the title says. I measured the coil of the tweeter and I got nothing. Opened it up thinking the worst but it only turned out to be a loose hook up wire connection to the coil. Pheeeewwww! The sparkle came back!

Passive crossover for the tweeter. Checked it out before removing the speaker.

The tweeter, mounted at the center of the 12″ speaker.

Loose hook up wire at the tweeter voice coil(click on the picture to really see it).

Soldered together.

We got measure! 3.7 Ohms.

And pretty much done. Put it all back together and tested. Like I said before, the sparkle is back!