Question about Jl Audio 12W3 Car Subwoofer

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No sound No continuity No Ohm

Is there solution for blown speaker to repair.
I did check with multimeter, No Ohm rating and No continuity.
Please Help.
Have a nice day!

Michael Noh

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Sorry no there isn't.

Posted on Jan 22, 2009


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Sound is only coming out of one side of my earthquake sub. Could I have blown the other side? Thank you

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No woofer sound from my K3000FX. Verified all cables and settings correct- but sound only comes from tweeter. What could it be?

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Hate to say it, but possibly a blown speaker. To check this, do the following -

Step 2:

Insert headphones into jack to verify for sound there.

Step 3:

Unplug unit and open rear panel to reveal speakers.

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Remove leads from woofer.

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Using a multimeter, set to OHM (horseshoe) to lowest setting.

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Apply red(+) and black(-) to speaker leads. Meter should read at least 4-8 ohms of resistance.

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If no meter available to use, the use a 9 volt battery by applying direct connection to speaker leads in an off-and-on fashion - You should hear a "click" sound come from speaker. If no "click," then speaker is blown.

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Hi Thanks for your help, One year old Sony mini

sir i think ypur unit is ok and run correctly... try to check your speaker maybe your speaker got open or burnt... you can test it by swapping your speaker to another unit or you can test your speaker using multitester...just point your selector at resistance test a speaker has 8ohms reading....

the speaker has a two terminal.. a positive terminal and a negative terminal... your multitester has a two lead.. red lead which is a positive and a black lead which is negative..
measure-speaker-impedance-1.1-800x800.jpg Multimeter probe sockets (NL Graphics) Insert the probes of a digital multimeter in the correct sockets of the multimeter. There may be several different sockets for the probes depending on what parameters you're measuring. Look for the sockets marked "impedance" or displaying the ohm symbol. Different models and brands of multimeters will vary in their labeling, so check your multimeter's manual if you're not certain about which one to use.

  • 2 Select the range for the multimeter. Since you'll be measuring fairly low resistance levels with a speaker, choose a range that will encompass readings in the 2-16 ohm range. It's extremely rare to find speakers that will have an impedance outside of that range.
  • 3 Touch one probe to each of the speaker terminals and check the reading. This will be the impedance of the speaker. Record the measurement, and when you're done, turn off the multimeter to preserve the batteries for the next time you need the multimeter.

  • Read more: How to Measure Speaker Impedance '
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    No Power :(

    It does sound like it may be blown but most likely you can have it rebuiltor reconed check local listings for speaker repair or audio repair and so on. I have a repair shop here in town which is Denver. Also keep in mind that a repair shop may not use a high quality parts to complete the repair. New may be better. One more thing if you know how to use a multi meter try OHM testing the woofer check to see what the rated OHM's are and also test with it powerd up and powered off. Hope this helps. If so please leave feedback.

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    Amp quit putting out sound

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    I hope this is helpful, and if so a good rating would be appreciated. If you need to communicate more with me to determain what the problem is, please wait to give a rating until we are finished. That way I will not get an undeserved bad rating. By the way, the only rating that is good (meaning that it doesn't lower my over-all rating) is a FixYa! rating. The "Helpful" and lower just bring my rating down. After all, the only reason for offering this free help, is to get a good rating.


    Nov 18, 2008 | Jl Audio 500/5 Car Audio Amplifier

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    Blown subwoofer

    "Is there any way to repair voice coil?"

    the simple answer is no.

    the long answer is you could try contacting the mfg of the sub and see if you can order a new foam ring, cone and voice coil to replace the one you will have to destroy to take it out.

    Nov 09, 2008 | Jl Audio 12W3 Car Subwoofer

    1 Answer

    No sound

    Either you have a wiring issue or defective speakers. If you have a multimeter, set it for an ohms reading. With the speakers disconnected, ohm the terminals. It should read very close to the ohm rating of the speaker (as indicated in the specs).
    You may also check the fade control on the deck to make sure it's balanced between front and rear.

    Hope this helps!

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