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JL Audio 12WX-4

12" Single 4 ohm WX Series Car Subwoofer

Discontinued
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This item has been discontinued

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JL Audio 12WXv2-4

OUR PRICE: $109.95

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Digitally Optimized So You Don't Have To

For years JL Audio has produced subwoofers with highly accurate, tight and clean bass reproduction. For many years more JL will continue its legacy of hard hitting bass and the WX series is no exception. These woofers work great in smaller more compact enclosures which saves trunk space and gives that bass we have grown to love. This woofer utilizes elevated frame cooling techniques to deliver cold air above the top plate of the voice coil helping to resist breakdown in extreme situations. A polypropylene cone has been used for durability and a foam surround provides exceptional excursion for a woofer of this size. Proprietary Dynamic Motor Analysis (DMA) modeling gives a highly accurate computer reproduction of the woofers physical behavior. This helps JL Audio engineers analyze the distortion mechanisms of the speakers and make adjustments to improve loudspeaker behavior. For reduced distortion, improved performance and stellar sound quality the WX series woofers have it made!

Product Features:

  • 12" Single 4 ohm WX Series Subwoofer
  • Power Handling:
    • Peak: 500 watts
    • RMS: 200 watts
    • Recommended Power Range: 50-200 watts
  • Impedance: 4 ohm
  • Polypropylene woofer cone material
  • Foam woofer surround type
  • Proprietary dynamic motor analysis (DMA) improves motor behavior
  • Elevated frame cooling delivers cold air above the top plate to the voice coil
  • Resists breakdown under extreme conditions
  • Integrated foam rear gasket which provides an optimal seal
  • Great application flexibility with small or medium enclosures
  • Frequency response: 22-250 Hz
  • Sensitivity: 87.17 dB
  • Top Mount Depth: 5-5/16"
  • Cutout Diameter: 10-13/16"
  • 1-year Sonic Electronix warranty
JL Audio 12WX Recommended Power Range

Product History:

JL Audio 12WXv2-4 thumbnail
(newest, current model)
JL Audio 12WX-4 thumbnail
(previous model, replaced by JL Audio 12WXv2-4)

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
WX (JL Audio)
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
12"
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
500 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
200 watts
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
Single
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
4 ohms
Voice Coil Diameter
Diameter of voice coil, usually measured in inches.
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
22 - 250 Hz
Sensitivity
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
 
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
87.17 dB
Xmax (millimeters)
Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.
9.5 mm
Subwoofer Design
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Round / Circle
Main Cone Color
This is the color of the speaker's or subwoofer's cone.
Black
Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Polypropylene
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Foam
Magnet Structure
Defines the overall structure of the subwoofers magnet.
Subwoofer Grille
Most subwoofers are able to accommodate a universal grille; however, some subs include a grille and others have a specific, optional grille available for purchase separately. If "yes", then the subwoofer includes a grille. If "optional (sold separately)" the matching grille will need to be purchased in addition to the sub.
Optional (Accessory required and sold separately)
Re-Cone Kit Available
Some higher end subwoofers have replaceable cone assemblies. In case of a blown woofer, a recone kit allows for a simple replacement, as opposed to purchasing an entire new subwoofer.
No

Recommended Enclosure Specifications

Recommended Enclosure Type
This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

Ported / Vented
Sealed
Minimum Sealed Box Volume
This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
1.375 cubic feet
Optimum Sealed Box Volume
This value indicates the ideal sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Maximum Sealed Box Volume
This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
1.375 cubic feet
Minimum Ported Box Volume
This value indicates the minimum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
1.75 cubic feet
Optimum Ported Box Volume
This value indicates the ideal ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Maximum Ported Box Volume
This value indicates the maximum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
1.75 cubic feet
Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
5-5/16"
Cutout Diameter
The actual diameter of the hole you will need to cut out if you are creating a new mounting location for this speaker, or if you are mounting a subwoofer in a box.
10-13/16"
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

No

Electromechanical Parameters

Free-Air Resonance (Fs)
The free-air resonance frequency of the subwoofer, measured in Hz. At this frequency the weight of the moving parts is perfectly balanced with the subwoofers suspension system.
Equivalent Compliance (Vas)
This is the amount of air that has the same stiffness as the subwoofers suspension. The greater the rating, the lower the stiffness and larger recommended enclosure. It is measured in Liters.
Total Speaker Q Value (Qts)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including all dimensionless losses. Essentially, a high Qts value (closer to 1.0) means the subwoofer is great for sealed enclosures and a low Qts value (closer to 0) means the woofer is great in vented enclosures. A Qts of around 0.45 means the woofer will work decently in either enclosure type.
Electrical Q Value (Qes)
The subwoofers relative damping (Q) at the resonance frequency (Fs), including electrical losses. Also called the mechanical damping of the subwoofer. The unitless measurement usually varies from 0.5 10.
Electrical Resistance of Voice Coil (Re)
Amount of DC resistance of the subwoofer when measured with an ohm meter. Typically, this will read less than the impedance rating of the subwoofer.
Mechanical Q Value (Qms)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including mechanical losses. Also called the mechanical damping of the subwoofer. This unitless measurement usually varies from 0.5 10.
Efficiency Bandwidth Product (EBP)
This number represents the trade off between having an efficient woofer and one with a wide bandwidth. To calculate this number, take the Fs and divide it by the Qes. If the number is below 50, the woofer is designed for a sealed enclosure only. If it's between 50-100 it can be used in either. Lastly, if it's greater than 100 it's designed for vented enclosures.

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
43%
4 Star
57%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.6
Value
4.6
Features
4.4
Design
4.5
Usability
4.6
Mikey

Irmo, SC

Overall
Durability
Value
Features
Design
Usability
Great Subs For The Price

December 10, 2012

My Setup: -Lanzar Vibe 241 Pushing 200w RMS x 2 Channels @4Ohm -Ported Box -JL Audio 12WX-4 (2) Let me say that I was really surprised how good these subs sound. 4 Ohm capacity subs usually are very clear, but these subs will hit the high notes like nothing else. The Mid and Low bass notes are also very good however with only 200w RMS its not gonna be the loudest sub in the world. I still own two of these for a year now, and they still sound as good as the day I set them up. I would definitely recommend these to anyone who wants to stay on a budget, but wants some bump to go along with their system. Great buy, Sonic has always been the best when it comes to this.

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Don Trini

Mexico

Overall
Durability
Value
Features
Design
Usability
They are very good,love them!

November 7, 2012

I like them because they have the perfect bass not to much not to little there good I bought to of these and I'm satisfied stop searching and start buying!

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david

largo, FL

Overall
Durability
Value
Features
Design
Usability
LOVE IT

August 13, 2012

SATISFIED WITH THE PRODUCT FULLY. WILL CONTINUE TO PURCHASE MORE FROM SONIC ELECTRONIX. THANKS

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Bhartsaw

Houston, TX

Overall
Durability
Value
Features
Design
Usability
Great speaker for the price

August 1, 2012

For an economical build, the woofers are great. They provide great punch and great amount of low end. I highly recommend these for anyone looking to improve the volume and dynamics of thier sound system.

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reverand jim

holiday fl

Overall
Durability
Value
Features
Design
Usability
great subs great price

February 21, 2012

If your looking for the best deal on some good sounding subs your search is over. I'm using one in a 1.8 cu ft ported box from Sonic and i was surprised at how good this thing sounds for 50 bucks. I'm giving it 250 watts.

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TMM

NE

Overall
Durability
Value
Features
Design
Usability
poundabal

February 6, 2012

I recentally bought 2 of these little guys and put them in an enclosed box with a 400 watt rms amp generating together 400 rms and 1000 peak. Let me tell you this thing pounds it hits all bass and sounds awesome doing it definitely a JL for sure.

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freddie

kodak, TN

Overall
Durability
Value
Features
Design
Usability
great sound

January 1, 2012

Great sounding, bass is very clear, hits every note great. Beginer subs or if you want to add some more bump in your trunk i recommend these. Pros: great bass and sound very cool looking and also look good in any ride Cons: none

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weezy

charlotte

Overall
Durability
Value
Features
Design
Usability
Overall good sub

October 11, 2011

I think this is one of the best entry level subs there is. I bought this with a low budget and was really suprised how hard one hits. I have a 1999 silverado 1500 ext. cab and it sounds really nice. Not somethin i would recommend if you plan on lettin the whole neighborhood hear you though.

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Josh C.

Birmingham, AL

Overall
Durability
Value
Features
Design
Usability
Great Entry Sub

October 3, 2011

I purchased 1 of these and put it in the 1.8 vented box from this site. I paired a Polk Audio PA330 with it for a full 200 watts rms at 4 ohm mono. My car is Honda Civic so the trunk seals off more than a hatchback would but I still get great sound. My setup will not disturb the cars around me or flex my car but it can get plenty loud inside the car which is what matters most. My trunk only has a tad rattle with certain lower frequencies but is not obnoxiously loud by any means. I imagine a pair of 10's sealed or 12's sealed would provide plenty of bass for someone who does want a loud setup with competing. The quality is there and I highly recommend it for the price. I purchased mine the beginning of last month and am quite pleased with it so far. I do intend on getting some sound dampening for the trunk and car to increase the amount of sound staying in the car particularly on the highway since road noise is a pain. My prior setups were a pair of underpowered MTX Thunder 4000 10's (over 10 years ago) and Kenwood Cyclone 10's (also over 10 years ago) so I have been out of the car audio world for a good while. I'm not a basshead as I grew out of that but still enjoy feeling the low end of the music.

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joe

morenci az

Overall
Durability
Value
Features
Design
Usability
Bad ass deal r

May 9, 2011

Good stuff typical JL audio quality. I would definitely but it again

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Brian

clovis NM

Overall
Durability
Value
Features
Design
Usability
JL 12wx

April 20, 2011

These are great subs for the money... probably the best entry level woofers there is out there. Get a dual vented box with a monoblock JL 250 watt amp and they hit hard in a car or small SUV. Doubt they would sound to good under the seat of a truck but if thats wat u want feel free to try them out!

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none

Clovis NM

Overall
Durability
Value
Features
Design
Usability
JL 12wx

April 20, 2011

These are great subs for the money... probably the best entry level woofers there is out there. Get a dual vented box with a monoblock JL 250 watt amp and they hit hard in a car or small SUV. Doubt they would sound to good under the seat of a truck but if thats wat u want feel free to try them out!

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Shanernater

Denver, CO

Overall
Durability
Value
Features
Design
Usability
Inexpensive model but great quality

January 22, 2011

JL has always been one of my favorites and this base model is amazing. I have just one in my Pt Cruiser and I thought that it wouldnt hit as hard since its not a 500rms or more sub but this one sub shakes the whole car when its just half power. Right now I have connected to it an Rockford fosgate R-150-2. I plan to put another one in so i would have 2 subs with a R500. I cant say this for sure but im pretty sure this sub pushes alot harder than some subs that are 500 or more rms

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jacob

Butler, PA

Overall
Durability
Value
Features
Design
Usability
Just like the old wo's we all loved

October 29, 2010

After purchasing I decided to write a review since there are none. I just bought one and hooked it up in a small suv. The sub sounds good and hits very clean for an entry level sub. These subs are made for small amp applications. If you put more than 150watts rms on this it will sound like garbage. The wx is exactly like the old wo's. The cone style, power handling, and most important the sound are equivalent to the old wo's. So if you liked the old wo's, you can feel confident in buying these. One small gripe is the lack of push terminals on the sub. Oh well.

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Accessory Tools and Products

Accessories added

Single 12" Subwoofer Angled Truck or Hatchback Box Enclosure

CARB Compliant, 5/8" MDF Shallow Sub Enclosure Lined with Polyfil.

Your Price $34.99

Single 12" Ported Enclosure Custom Black Baffle

Gold Binding post terminals and a high quality 5/8" MDF construction.

Your Price $59.99

12" Dual Sealed Subwoofer Enclosure

CARB Compliant, 3/4" MDF Dual Vented Enclosure w/ Premium Carpeted Finish

Your Price $89.95

Single 12" Venteded MDF Subwoofer Enclosure

12" Vented 3/4" MDF Enclosure Lined w/ Polyfil.

Your Price $44.99

NVX 25 ft. of True Spec 12 Gauge Speaker Wire

100% OFC wire with EnvyFlex metallic jacket insulates and protects against damage from extreme conditions.

Your Price $39.99

Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

Your Price $14.99

20 Square Feet of Sound Dampening Material

NVX Sound dampening is thicker than competitors, eliminates rattles and gives you bigger bass!

Your Price $59.99

Dynamat Sound Dampening Trunk Kit

Did you know sound dampening will reduce those annoying rattles and even increase your SPL?

Your Price $109.95

Stinger Sound Dampening Trunk Kit

Stinger's Roadkill sound dampening series is sure to kill unwanted road noise and rattles! Enough sound dampening for your whole trunk!

Your Price $69.99

12 oz. Can of Adhesive Spray

Spray adhesive used for adhering carpet to subwoofer boxes without bubbles.

Your Price $6.99

Spring Post Terminal Cup

Makes adding a spring post terminal to an enclosure simple! Banana clip ready!

Your Price $3.99

40" x 15 Ft Piece of Premium Un-Backed Automotive Trim Carpet

Durable design for long life-span, available in many colors and shades.

Your Price $39.99

Gold Plated Dual Terminal Banana Plug Connector

Enables an expandable, secure connection accepting up to 8 gauge wire.

Your Price $1.99

Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $12.99

Xscorpion 9-Piece Nylon Plastic Pry and Chisel Tool Set

Easily removes dash/trims, door clips, panels and pins, rubber grommets and vehicle emblems.

Your Price $14.99

Cordless Multi-Functional Heat Tool Soldering Iron Kit

Continuous working lock allows you to work without holding down trigger.

Your Price $79.99

4 Ft of 1/4" Thick Black Heat Shrink Tubing

Provides abrasion resistance and added protection for your cables.

Your Price $3.99

2" Universal, Professional Heavy Duty Roller for Sound Damping/Dampening

Universal rubber roller to make it easy to install sound dampening.

Your Price $7.99

1mm All Purpose Solder

Solder is all purpose for use on most projects where solder is needed.

Your Price $8.99

12" Protective Waffle Subwoofer Grille

Keep your subwoofer looking amazing while keeping it safe.

Your Price $4.99

Impedance Meter / Signal Generator

Easy to locate tuning frequencies of passive radiators and ported enclosures

Your Price $299.99

1 JL Audio 12WX-4 Subwoofer

Mono Amp

2 Channel Amp - Bridged

2 JL Audio 12WX-4 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

3 JL Audio 12WX-4 Subwoofers

4 Channel Amp

4 JL Audio 12WX-4 Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp

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Product Summary

Manufacturer

Model Number

12WX-4

UPC

699440921718

Weight

7.90lbs

Internal SKU

12wx4

Internal Product ID

26963

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: JL Audio 12WX-4