I have ALMANI ALC-6902 6 X 9" rear speakers. Recently, one just stopped working. I really don't believe it is blown. I'm wondering if some wiring or something may be screwed up. In which case, I dont want to buy new speakers. My question is How can I test a speaker to tell if it is working properly?

 

hook up the pos and neg to a 12v
if you hear something there good

 

If only one is not working swap it out with the one that is, if it still does not work then it is blown, if it works the problem is wiring or the amp driving it. 94

 

use a DMM and check ohms of the speaker.

 

i have used 9v to test the same way mentioned above, havent used a 12v though they will make a crackle sound if they are not blown.

 

You run too much dc through it and it will blow...