Tweeter Blown OR Crossover? How to check?


I have a pair of Revel M22 monitors that I suspect one has a blown tweeter (no sound at all).  Am planning to purchase a pair of new tweeters, but dawned on me that I should check "output" at the speaker wires where the tweeter is .... maybe not tweeter and crossover instead?

How can I check that?  Can I clip leads onto those wires and hook into a small bookshelf speaker to check?  Or is that a no-no?

Nothing labeled on the tweeter to say positive or negative .... just one white wire (with blue stripe) and one black wire.  Guessing the white is positive and black is negative?

If it is the speaker, I'd guess I would install the new tweeter same way and hook up wires according to which way they are now (same) since there aren't any indicators on the speaker itself....

Please forgive my terminology if incorrect.

scot_m
For testing, the wire polarity doesn’t matter because speakers receive an AC signal. Remove the crossover (probably attached to the binding post bracket) and inspect for any broken wires or solder joints. Inspect for any burnt or missing PCB traces or leaking capacitors. If everything looks copasetic, order a new tweeter and install it in the same configuration as the original. Highly doubtful it’s the crossover.
The polarity DOES matter -  because you could connect the tweeter out of phase with the main driver - then it would really mess with the phase of the other speaker and they would never sound right.

So make sure you record which wire goes to which terminal.

You could attach the tweeter from the other speaker - that will tell you if the x-over is still functioning correctly or not.

Regards...

They're soldered instead of clipped on.  Which is why I didn't really want to take the other one off the other speaker to test.

Thus why I'm asking if I can just hook up another small bookshelf speaker (at speaker inputs) to test the tweeter connection.

Will that tell me if there is power thru there (from crossover) or shouldn't I hook up a whole speaker to the tweeter only wires?

Easy to test the tweeter. Get a multimeter and set it for driver resistance. Place one meter lead to one side of the tweeter and the other meter lead the to remaining tweeter terminal. Measure the ohms/resistance  across the driver. If 3-8 ohms all is good. If you get no reading, then the tweeter is bad. 

You must disconnect st least one lead from the crossover to the driver for the test to be accurate.  
The polarity DOES matter - because you could connect the tweeter out of phase with the main driver
Not for testing whether it's blown!