How to tell if coils are blown

[EL-ORIGINAL]

How can I tell if one of the coils on my 12" l7 are blown?????????/

[squeak9798]

With a DMM. Set it to resistance (Ohms) and stick the red lead on the DMM to the (+) terminal of the coil, and stick the black lead on the DMM on the (-) terminal of the coil. Or you could check for continuity with the DMM aswell.

[Chevyaudio]

^ agree get a dmm and set it to ohms and make sure the resistance is correct

[jsloan10]

Sniff the vent on the magnet, if it smells strongly of burnt carpet its fried.

[cjjackson85]

^Not necessarily...

[BeanII]

D@MN YOU NOOB!!!!!

HOW DARE YOU ASK A QUESTION LIKE THAT WITHOUT SEARCHING FIRST!!!!!!!

[cjjackson85]

^spelling>>You

[BeanII]

^Not necessarily...

Yeah, but it's a pretty good indicator if ya ain't got a DMM

[cjjackson85]

^Not necessarily....

[EL-ORIGINAL]

Cant I just take the l7 out of the box and hook my amp up to each set of coils at a time to see if the cone moves. Can that work it seems logical right??????????? Will the cone move with a blown coil????????

[jsloan10]

^Not necessarily....(lol)

[BeanII]

c'mon, help the kid out.

An amp can sometimes (often actually) move a speaker that's got a bad coil. Testing the resistance with a DMM is the sure fire way to find out if the speakers good.

spelling? eh.

[EL-ORIGINAL]

thx