Question about Jl Audio 12W3 Car Subwoofer

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No sound out of subs

I have a factory radio and its connected to a zapco 1000 amp and then two 2 12w3 jl subs its has a spare battery in the back a red top optima its has power to the amp cuz the fan is running on it but no sound from the subs i have checked the rc cables from the head unit to the amp and they look ok but no sound

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Undo all the wires to the amp and the speakers and simply rewire em.

Posted on Feb 26, 2009

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Can i run a 4ohm.dvc & a 3ohm.svc off of a mtx te 801d


if you wire the 4 ohm sub voice coils in parallel you will have a 2 ohm load for the Image Dynamics sub, the JL sub only being single voice coil will of course be 3 ohm.
You cannot connect them both to the amp you specified as when connected the total load will be less than 2ohms and the amp will either trip it's protection circuit or could damage the amp, My suggestion is to try each sub separately and decide on the one you like the most or obtain a matching pair for the 4ohm DVC.

Mar 05, 2012 | Car Audio & Video

2 Answers

I looked up the correct way to wire my JL 13.5W7 1.5. Therefore it said to wire it in parrallel. I understand this will put it at .75 ohm. As I start to turn it up it sounds great, very loud but once the...


1000/1v2 Class D Monoblock Subwoofer Amplifier Specifications:
  1000/1v2

Rated Power:
1000 W RMS @ 1.5 ohm - 4 ohm (11V-14.5V)

THD at Rated Power:
<0.05% @ 4 ohm

S/N Ratio:
>95dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth)

Frequency Response:
5 Hz - 250 Hz (+0, -1dB)

Damping Factor:
>500 @ 4 ohm / 50 Hz


According to the chart your amp is only stable down to 1.5 Ohms, so running at .75 Ohms the noise you are hearing is the amp clipping (running more power than it can handle at low ohms)
I would suggest wiring it in series, or you could adjust the gain on the amp until the popping goes away.

Hope this helps.

Nov 10, 2010 | Jl Audio 13W7 Car Subwoofer

1 Answer

What kind of wire do I need to install Infinity reference series 605cs with a JL Audio 10" sub and a Alpine Flex 2 amp? Can I use my factory head unit?


You can use the factory speaker wiring for the Infinity speakers you should purchase a amp kit which will give you everything to install the amp. See site below

http://www.sonicelectronix.com/item_18428_Raptor+ISPKBL4-BG+by+Metra.html
Well that all depends on the current audio system you have now is it just a basic or a premium factory system with a factory amp. Honestly you would get a better and cleaner sound if you change the factory head unit to a after market one which has preamp feeds and the higher the preout volt the better. Just make sure it is compatible with the amp volts input (Example 4v to 250mv) If you use the factory headunit you would have to by a high to preout adapter it connects to the exsiting radios speaker leads, but like I said before change the head unit you won't be sorry. Do not forget if you change the radio you need a radio install kit and the wiring harrness which converts the two radio plugs so you don't cut them so down the road you can remove the after market radio and just replug the factory right back in.

Apr 16, 2010 | Infinity Reference REF 605CS Car Component...

2 Answers

Try to install 3 12w3d6 subwoofers connecting 3 sub together to put them in box


You need to wire them according to the limitations of your amp you can pull a 1 ohm overall load just by connecting all of your coils in parallel- or you can get an overall load of 4 ohms by wiring each sub individually in a series configuration which will yield a 12 ohm load per sub -and then wire the 3 sets in parallel which will bring your ohms back down to 4. You can do a lot with that many coils it depends on your amp really-ideally a 1 ohm stable class d mono amp that is 1000-1500 watts rms would knock the **** outta those things JL is the good stuff.

Jan 16, 2010 | Jl Audio 12W3 Car Subwoofer

1 Answer

'04 Nissan Sentra S factory installed subwoofer wiring diagram


A FACTORY INSTALLED AMP/SUB WILL BE WIRED INTO THE VEHICLES FACTORY WIRING JUST AS ANY OTHER COMPONENT. YOU WOULD THINK THAT YOU WOULD FIND THICK POWER AND GROUND CABLES ALONG WITH RCA CONNECTIONS AS YOU FIND WITH MOST INSTALLS.NOT THE CASE HERE.YOU MUST FIND THE HARNESS THAT HAS THE POWER AND GROUND CONNECTIONS ALONG WITH THE INPUT WIRES FOR SOUND. YOU MUST OBTAIN A VEHICLE SPECIFIC WIRING DIAGRAM THAT HAS THE WIRING FOR THE SOUND SYSTEM PACKAGE THAT CAME WITH YOUR VEHICLE. YOU MUST THEN WIRE IN THE BLUE REMOTE TURN ON LEAD FROM YOUR UNIT TO TURN THE AMP AND SUB ON WITH YOUR RADIO AND NOT YOUR CAR BATTERY. YOU WILL ALSO NEED TO FEED SOUND TO THE AMP USING ONE OF THE REAR OUTPUTS FROM YOUR RADIO.

Sep 05, 2009 | Car Audio & Video

1 Answer

JL 13w7 & 1000/1 Settings


There is no "perfect" setting that can be placed in a manual. It's all done by ear. Your settings will vary depending on the vehicle you are in, the type of enclosure you have, the type of music you listen too, how much voltage your deck put's out. There are many variables, but I can try to give you a basic guide.

First of all you need to know your enclosure. If you have a ported enclosure tuned in the mid to low 30's you may want to set the low pass to around 70-80 hz with your sub sonic set at 30 hz. this will give you the higher bass frequency you need for the loud bass you want, and protect the sub from going too far below the tuned frequency of the enclosure, and losing it's composure.

As far as the gain, and bass boost are concerned, you just have to adjust them by ear. First adjust the radio volume to normal listening levels, by that I mean as loud as it can go without the speakers in the car sounding like ****. Now you adjust the gain first. slow turn the gain control, carefuly watching and listening to the sub.. Adjust the gain to the point of the woofer getting a lil sloppy then back it down a bit until the sound is clean again. Now do the same with the bass boost. if there is a bass boost frequency adjustment, set that as close to the tuned frequency of the box as you can.

If you are in a sealed box the adjustments are a bit easier, and are all about taste. Adjust the radio as described before, and put on your favorite song. Next start udjust thing lowpass frequency to taste, not too high tho, try not us higher than 100 hz in your sub's for better sound. Sub sonic is not quite as important in a sealed box, as there is much less danger of the sub losing control.

Well good luck, and hope this helps!


Jul 13, 2009 | Jl Audio 13W7 Car Subwoofer

1 Answer

JL Audio 13w7 & 1000/1 Amp Settings


that depend on how you wire the speaker my friend and the performance of you am and u have to use jl -dclass series amp for the best performance of those speakers

Jul 13, 2009 | Jl Audio 13W7 Car Subwoofer

1 Answer

Jl audio 10w6 x zapco350


These subwoofers are dual 4 ohm voicecoils.

Parallel wiring the 2 voicecoils would net a 2 ohm mono load.

Connect both + on the sub to the + on the amp.
Connect both - on the sub to the - on the amp.

Many professionals simply jumper the 2 + and 2- on the sub.... then run 1 set of wires from one of the terminals to the amplifier.


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Jan 27, 2009 | Jl Audio 12W6v2 Car Subwoofer

1 Answer

Sub does not operate


There could be many issues, from fuses in your amp, to power getting to your amps, to "low" impedance on your amp, and the circuit shutting down. Or it could even be your head unit, perhaps there is a setting on the HU that turns ON/OFF the subwoofer. BTW, you are running to low of an impedance on that amp. If my memory serves me correct, the lowest impedance that they JL Audio recommends is 1.5 Ohms.

Jun 25, 2008 | Orion H2 12.2 Car Subwoofer

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