Question about Jl Audio 12W3 Car Subwoofer

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Blown subwoofer I did check with multimeter and there is no continuity and no ohm rating. Is there any way to repair this subwoofer or repair instructions? Please help!

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  • michaelnoh9 Nov 10, 2008

    Thank you very much for your reply.

    Is there any way to repair voice coil?

    Have a nice day!

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2 Answers

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"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.

Posted on Mar 16, 2009

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If you don,t have a broken pigtail then the voice coil is probably burnt out

Posted on Nov 09, 2008

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1 Answer

2005 toyota matrix


see the diagram attached. and fix it. Use the multimeter , test the continuity wires for open or broken, repair or replace. Test the coil for speakers with multimeter by impedance( read the ohms in the speaker,read with the multimeter) repair or replace. test the fuse too.
God bless you7b0a3cd2-2f39-4fc4-8648-63c45ce83d4e.jpg

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I have 2 12 inch kickers cvr and i have the rockfordfosgate g15002 hooked up and briged and it keeps cutting off


This is usually due to wiring the subwoofers to the wrong Ohm load. Normally those amps are rated at a 4 Ohm load. It sounds to me like they are wired down to a 2 Ohm load and bridged. It's a protection situation for the amp. If you have a multimeter, disconnect the woofers from the amp. Next, hook the meter up to the subwoofers where the wire or wires are coming out of the box. If you can give more information on the woofers, I can give you a better idea on what the numbers that you should see. It depends on if they are dual 2 or 4 Ohm woofers.

Apr 23, 2011 | Rockford Fosgate Car Speakers & Subwoofers

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The jvc kdr310 protected mode problem what to do to fix it


Check the ground wire to the amp, if you have a multimeter, set it to continuity and check the ground lug on the amp to the frame of the car, if there is more than say perhaps .1 ohm, i'd check the ground.
You could have also blown out a fuse or two on the amp it's self. That may be a better place to start.

Dec 04, 2010 | Car Speakers & Subwoofers

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AW1251T WoofersThese Speakers Keep Burning My Amp


You are going to need a multimeter and test the impedance rating on the subs (ohms) if they are frozen or blown they will short your amp. Be careful as your amp will not handle this abuse long.

Apr 08, 2010 | AudioBahn AW1251 Car Subwoofer

1 Answer

Sub cutting out


500W x 1 @ 2ohm

How did you "switch the sub from 2ohms to 4 ohms"?

If you have the swr-1222d as listed, your only options are wiring 1 or 4 ohm, as it is a dual 2 ohm voicecoil.

If it was wired @ 1 ohm - you may have already done the damage to your amplifier - as it is not rated @ 1ohm mono.

There are 3 reasons the amplifier will go into protect mode while playing...
Thermal - overheating due to too low impedence.
Ground Loop/Short Circuit - Blown voicecoil, bad amplifier ground, tinsel slap, etc.
Overload - Impedence not within specs.

Disconnect every wire (including RCAs) from the amplifier. Reconnect only power and ground - make a short wire to loop from power terminal to remote terminal.

If the amplifier stays on without turning off - remove the jumper, add the remote wire, and try again.

If it turns off - the problem is internal and needs repair.

Still on? plug in 1 rca, and re-try.... then the other.

Still going??

Now use an Ohm Meter - or Digital multimeter set to ohms 20, and check both voicecoils. They should read 2ohms +/- .5ohm.

If they are OK, wire up the 4ohm load (series the voicecoils) and turn the gain on the amplifier to 1/2.

Retry -

If the amplifier continues to fail at higher volumes - the thermal protection relay has become weakened because of your improper wiring, and will need to be repaired to solve your issue.

Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.

Jun 10, 2009 | Alpine Type-R SWR-1222D Car Subwoofer

1 Answer

2 10 kickers not playing. . .


Hello zqueliz,

It's possible that the sub is blown, but it may be something else. You did not specify how the subs are wired to the amp, how many channels on the amp, or whether or not the CVR's are in separate enclosures. These specifics will affect how you isolate the problem.

1) Check all of the wiring: RCA's from head unit to amp, speaker wiring from amp to sub. Make sure there are no breaks in the insulation and that the wire does not come in contact with another wire or metal parts on the vehicle.
2) Remove the nonworking sub from the enclosure and check the wiring from sub to terminal inside. While you have the sub out, check the "braided" wires going from the sub terminals to the cone.
3) Reverse the wiring from the amp to the subs to see if the problem moves to the right sub. That will tell you the problem is not in the sub.
4) If the left sub still fails with the amp channels flipped, you find no wiring defects, and you can't see any physical damage, test the sub voice coil with a multimeter. Set the meter to read "ohms" on the lowest scale. The actual reading should be a little less than the rated impedance. If the subs are 4 ohm, the meter should read about 2-3 ohms. If the meter reads "0" (pegs) or if it reads "infinity" (no reading at all), the sub voice coil is bad.

Hope this helps.

Apr 29, 2009 | Kicker CVR12 Car Subwoofer

1 Answer

Hy when hooking up right rear speaker to purlpe wire coming from radio causes radio to shut down?


Pinched wire, metal touching metal, or blown speaker.

Try and move the speaker up and down. If it is hard, or you hear scratching - it is blown.

You can test for continuity to ground on the wire with a multimeter that has continuity capabilities as well to see if there is a problem.

Thank you for using FixYa - A FixYa rating is appreciated!!

Jan 23, 2009 | Car Speakers & Subwoofers

2 Answers

Do I wire 4 ohm voice coils in series or parallel to get a 2 ohm circut?


Hi,

Basically, it would be the amp that would dictate whether series or parallel. If the amp is rated at X watts @ 2 ohms, then the speakers could be wired in parallel. If however the amp is rated at so many watts in 4 ohms, then it would be safer to wire the speakers in series to achieve 8 ohms.

If two 4 ohms speakers are wired in parallel, the end result is a 2 ohm load. If the amp is rated at 4 ohms, and presented with a 2 ohms load, possibilities are:
  • autoprotect would kick in often;
  • burn the output transistors of the amp.
Hope that this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

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1 Answer

Sub+amp configuration


With a single 4-ohm subwoofer, usually the best choice is a 2-channel amp that can be bridged to a single channel. In your case, the sub is rated for 1000 watts. Not many amps are rated for that kind of continuous power into a 4-ohm load. Kicker doesn't list a minimum power rating, which isn't unusual in subwoofer specs. Depending on your budget, I'd look for an amp rated for 300-500 watts minimum; the higher, the better, up to 1000 watts. Most amps will have several power ratings, based on the load impedance and number of channels driven. A typical 2-channel amp might be rated like this: 150 watts x 2 channels at 4 ohms 300 watts x 2 channels at 2 ohms 500 watts x 1 channel at 4 ohms. The power rating you'll want to look at will be the 1-channel, 4-ohm rating. You can look at mono amps, too, but in the power ranges you're looking for, a 2-channel amp will probably give you the best value. However, if you can find a mono amp with a high enough 4-ohm power rating, it would run cooler and might last longer than a 2-channel amp with comparable power. When looking at mono amps, you'll find their highest power output will be at 2 ohms or 1 ohm; make sure you're checking the 4-ohm rating when making comparisons. Some amplifiers that might work well for you: Kicker SX900.2 Kicker ZX850.2 Alpine PDX-1.1000 Rockford T600-2 Hifonics ZXi 1006 Premier PRS-D2100T Power Acoustik OV2-2200

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