Audio Systems: My subwoofer does not work, kicker l7, c battery

Question
hello, thanks for the quick response, i know the amp works for sure and i know the speaker is defective. so you are saying to hook up a c battery to the 2 negatives and 2 positives on the speaker and see if there is a click noise.  if it clicks it is still in tact. then if it clicks what do i do? if it doesn't then how much do you estimate it will cost to fix it? I have a meter thing that has a positive and a negative, what do i set the meter to and where do i touch the positive and the negative? Thank you so much!
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Followup To

Question -
I have a Kicker L7 10" Subwoofer and it is 2 Ohm. The speaker made excellent sound and all of a sudden it stopped. I have tested it with many amps because I thought the channel on the amp blew or something. It does not smell burned at all and I think maybe something inside of it messed up.

Answer -
ONE: Test the Kicker this way.  Disconnect the wires going to it.  Using clip leads or a foot or two of twisted wire touch a 1.5v C battery across the terminals. If you hear a click sound when the battery connects it means the voice coil is still in tact.  If no clicking, the coil is open. You can also check it with an ohmmeter or vom.  (Walmart electrical department or $9.83 is best for speaker and automotive work).

TWO:  Check the amplifier by connecting any other known to-be-good speaker to the amp to prove it is putting out sound.

THREE:  If nothing coming out of the amp, determine if the amp is defective or if the sound coming from the head unit is not getting there.  Best way to check:  Hook up the output of a battery operated portable player (iPod, mp3 player, walkman, etc.) into the input of the amp just for checking audio throughput.  You can also use the vom above to check 12v for sure is getting to the amp.

If the kicker coil is open you can usually send the in to a repair shop and have them repaired for a few bucks.

Let me know if you need more.

Cleggsan  

Answer
If you have a vom (volt ohm multimeter) set it for ohms or resistance and measure the resistance of the voice coil. It should be about 2 ohms.  OR, if it clicks when the battery is connected across the coil, the speaker voice coil is good.

If you are not getting sound, even though it is has a good coil there are two possibilities:  1) the wiring to the amp from the head end or the wiring from the amp output to the sub is bad. So, check them out.  2) It is rare, but sometimes the coil will breakaway from the coil form and will not move the cone when audio is applied.  BUT, in this case you can still hear the coil moving or sliding up and down on the coil form; it will sound like distroted audio.

If the coil is open it will need to be replaced.  It will cost about $30 or so plus shipping.  You can find speaker repair shops in most big cities around the country.

To find a speaker repair place, look in your own city first; consult the yellow pages or yellowpages.com or such. You can find several by doing a google search for speaker repair, also.

Does this answer all your questions?

Cleggsan