







JL Audio 12TW3-D4
Shallow-Mount 800W 12" Subwoofer with Dual 4-ohm Voice Coils
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Enhance your car audio system with the JL Audio 12TW3-D4 Shallow Mount Subwoofer. Designed to deliver exceptional bass response, this high-performance subwoofer ensures you enjoy your favorite music with deep, accurate bass. Whether you're commuting or on a road trip, the JL Audio 12TW3-D4 offers immersive audio that brings your sound system to life.
Key Features:
| Feature | Details |
|---|---|
| Shallow Mount Subwoofer | Designed for compact spaces without compromising performance. |
| 12" TW3 Subwoofer | Provides deep, accurate bass with minimal distortion. |
| Optimized Motor Design | Ensures high output and low distortion for clean sound. |
| High-Quality Construction | Built to last with durable materials for long-lasting performance. |
| Dual 4-Ohm Voice Coils | Offers wiring flexibility for various system configurations. |
Advanced Design and Materials:
| Feature | Details |
|---|---|
| Efficient Heat Management | Includes cooling features to maintain optimal performance. |
| Rugged Construction | Built with durable materials to withstand daily use. |
| Shallow Mount Design | Fits in tight spaces without compromising sound quality. |
| Optimized Motor Structure | Delivers high output and low distortion for superior sound quality. |
Seamless Integration with Existing Systems:
| Feature | Details |
|---|---|
| Universal Compatibility | Compatible with most car audio systems for easy integration. |
| Easy Installation | Simple connection with included wiring options for a hassle-free upgrade. |
| Improved Audio Performance | Boosts overall sound quality and volume for a more immersive experience. |
Durability and Reliability:
| Feature | Details |
|---|---|
| Rugged Construction | Durable materials and design ensure long-lasting performance. |
| High-Quality Components | Ensures reliable performance and longevity for daily use. |
| Advanced Protection | Designed to resist environmental and mechanical stress for lasting reliability. |
Why Choose JL Audio 12TW3-D4:
Invest in the JL Audio 12TW3-D4 Subwoofer for a superior audio experience. Known for its reliability and high performance, JL Audio products are engineered to enhance your driving enjoyment with powerful bass and unmatched durability.
Benefits of JL Audio 12TW3-D4:
- Superior Bass Quality: Deep, powerful bass with minimal distortion.
- High-Quality Enclosure: Shallow mount design for compact spaces without compromising on sound.
- Universal Compatibility: Works perfectly with most car audio systems.
- Durable and Reliable: Built to withstand daily use with advanced protection features.
Specifications:
| Specification | Details |
|---|---|
| Subwoofer Size | 12 inches |
| Power Handling | 400W RMS |
| Frequency Response | 22Hz-200Hz |
| Impedance | Dual 4 ohms |
| Mounting Depth | 3.5 inches |
| Compatibility | Universal |
What’s in the Box:
- JL Audio 12TW3-D4 Subwoofer
- Wiring Harness
- Mounting Hardware
- User Manual
Conclusion
Upgrade your car audio system with the JL Audio 12TW3-D4 Subwoofer. With superior sound quality, a sleek shallow mount design, and exceptional durability, this subwoofer is an ideal addition to any vehicle. Experience crystal-clear bass and enhance your driving experience with JL Audio.
Frequently Asked Questions
What makes the JL Audio 12TW3-D4 Subwoofer stand out?
The JL Audio 12TW3-D4 features a 12" TW3 subwoofer designed for shallow mount applications, providing superior sound quality with deep, powerful bass and minimal distortion, making it ideal for enhancing your car audio system.
Is the JL Audio 12TW3-D4 easy to install?
Yes, the subwoofer comes with a variety of wiring options and includes mounting hardware for easy setup and installation.
Can the JL Audio 12TW3-D4 integrate with any car audio system?
Yes, the 12TW3-D4 is designed for universal compatibility and can be integrated with most car audio systems for improved audio performance.
Is the JL Audio 12TW3-D4 durable?
Yes, the subwoofer is built with rugged construction and features high-quality components to ensure reliable performance and protect against damage.
What are the specifications of the JL Audio 12TW3-D4 Subwoofer?
The subwoofer features a 12" driver, a power handling of 400W RMS, a frequency response of 22Hz-200Hz, an impedance of dual 4 ohms, and a mounting depth of 3.5 inches.
Does the JL Audio 12TW3-D4 Subwoofer come with a warranty?
Yes, the JL Audio 12TW3-D4 typically comes with a manufacturer’s warranty, providing peace of mind with your purchase.

JL Audio 12TW3-D4 12" Dual 4 Ohm Voice Coils Shallow-mount Subwoofer
The JL Audio 12TW3-D4 12" Thin-Line subwoofer is a perfect upgrade for your car’s factory subs, delivering heart-pounding bass in a shallow-mount design that saves space without compromising performance. Featuring a mica-filled polypropylene cone and rubber surround, this subwoofer offers the rigidity and durability needed for extended high-volume use while producing accurate, clean bass with minimal distortion. Its DMA-optimized motor design reduces distortion, and the Concentric Tube Suspension improves excursion, increasing air pressure for louder, more impactful bass. With 400 Watts RMS and up to 800 Watts peak power, a frequency response of 22–200 Hz, and a sensitivity of 84.11 dB, the 12TW3-D4 produces deep, precise low frequencies for an impressive in-car audio experience.
Key Features:
-Mica-filled polypropylene cone with rubber surround for durability and accurate bass
-DMA-optimized motor design with Concentric Tube Suspension for reduced distortion and better excursion
What's Inside?
- One 12" Thin-Line subwoofer
- Owner's manual
- Voice coil connection warning
What Others Are Saying
Eddie was great - SDCS installed a new head unit in my 2019 4Runner. He was honest in his opinions regarding the options I was considering. Pricing was also good - he was able to reuse some of my existing installation kit so I saved a bit of $$.Installation was clean and fast and he took the time to walk through the features before I left. Highly recommend!!
I had a great time at this shop! The staff really knows their stuff and took the time to explain the different options without pressure. Installation was quick, clean and professional. Everything looks factory and sounds amazing. The prices were fair and customer service was above and beyond. I highly recommend this place if you're looking for quality car audio and excellent service.
Those guys are really professional! I had a new Alpine floating head unit installed in my 2008 Mercedes, and it feels like a brand-new car. The installation was super clean. At first, the sound wasn’t the same as the factory stereo, but Kevin tuned it to be just as good—if not better—without adding any new amps. They even used my factory GPS antenna so I don’t have extra wires hanging out. On top of that, they matched the online price. Big thanks to Kevin and Eddie—highly recommended!
Kevin was awesome, he took his time and explained everything to me. I went in initially for a dash cam install and then decided to get a sub and amp installed as well. Both turned out great and will be returning if I need more work done.
Came In not knowing what to expect when suddenly my stereo stopped working. Spoke with Kevin in the front and after a VERY fast diagnosing they discovered my wiring was incorrect. After only about 45 minutes total being in the store I was on my way to the beach with a working stereo again! Thank you so much SDCARSTEREO
Highly recommend Kevin and the team at San Diego Car Stereo for any issues with aftermarket stereos. I bought a car with an aftermarket stereo and AC unit that wasn’t working properly—specifically, the heat wasn’t functioning due to an improper setup. I had several people look at it with no luck, and even the dealership basically refused to help because it was an aftermarket install. I came to Kevin and his team over the holidays feeling pretty defeated, but he was confident he could get the heat working before I headed back to a Colorado winter. Sure enough, he got it done.
FAQ
Do products purchased from San Diego Car Stereo come with a warranty?
Yes, all products come with a 1-year manufacturer warranty unless otherwise stated. This covers any defects excluding physical damage.
Are these products brand new?
Yes, every product we sell is 100% brand new, unused, and comes in original manufacturer packaging unless clearly marked otherwise.
Do you offer installation services?
Yes, we offer professional installation services at both of our San Diego Car Stereo locations. Our expert technicians have over 50 years of combined experience to install all of your car, marine, or offroad audio needs. Stop by or give us a call to schedule an appointment to get a quote in person.
