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If you're craving powerful bass but don’t have a lot of room, the JL Audio 12TW3-D4 car subwoofer is the perfect solution. This 12-inch shallow-mount subwoofer delivers deep, impactful bass without demanding large enclosures. Whether you're installing in a truck, coupe, or SUV, it delivers high-output sound without taking over your vehicle.
This car subwoofer is designed for space-conscious audiophiles who refuse to compromise on quality. The 12TW3-D4 continues JL Audio’s tradition of excellence—offering dynamic performance in tight installations.
The 12TW3-D4 measures just 3.25 inches deep but still delivers 400 watts RMS of clean bass. Its innovative concentric tube suspension allows the motor to reside further inside the cone structure. This makes the speaker shallower without losing travel distance or sound output.
With that design, this sub is ideal for behind-seat boxes, under-seat builds, or trunk compartments with tight dimensions.
12" dual 4-ohm voice coil configuration
400 watts RMS power handling
Shallow-mount design with only 3.25" depth
DMA-optimized motor system
Concentric tube suspension
Cast alloy basket with extensive venting
Sealed or ported enclosure compatible
The dual 4-ohm coils offer flexible wiring options. You can wire them to 2 ohms or 8 ohms, depending on your amplifier.
Thanks to JL Audio’s DMA-optimized motor, this sub keeps distortion low—even at high volume. Whether you love rap, rock, EDM, or jazz, this subwoofer provides smooth, tight, and responsive bass. It brings out deep frequencies without sounding muddy or overwhelming.
The 12TW3-D4 adds dimension to your music and makes every track feel alive.
With its low-profile frame and smart mounting design, this car subwoofer installs easily in non-traditional spaces. You only need 0.8 cubic feet of sealed airspace, or 1.35 cubic feet for a ported box.
Looking for more subwoofer options or packages? Visit our complete car subwoofer collection for compatible enclosures, amplifiers, and more.
Extreme heat and UV exposure can shorten the life of your subwoofer and damage interior components. A high-quality car window tint helps maintain cooler cabin temperatures and protects your audio investment.
It also adds privacy and enhances your vehicle's style. We recommend Window Tint Delaware for expert installation of premium heat-blocking films.
To get the most from your 12TW3-D4, pair it with a mono amplifier rated around 400 watts RMS at 2 ohms. JL Audio’s XD or RD amps are perfect matches for this sub.
Need help picking the right amp? Come by Audio Jam and our expert installers will help you build the perfect bass system.
Located in Bear, Delaware, we specialize in full custom audio installations. From enclosure fabrication to amplifier tuning, we’ll handle everything.
Your JL Audio 12TW3-D4 will be installed, tuned, and tested to perfection—so you hear every beat the way it was meant to be.
Audio Jam
📍 227 Governor Place, Bear, DE 19701
📞 (302) 832-2868
🕒 Mon – Sat, 10 AM – 6 PM
Stop in today to transform your car’s audio system. Let us help you get the bass you deserve.
Q1: Can the 12TW3-D4 fit under a truck seat?
Yes. Its shallow design makes it perfect for under-seat or tight-space enclosures.
Q2: Should I use a sealed or ported box?
It works with both. Use sealed for tighter bass or ported for louder, boomier response.
Q3: What amp should I use?
A mono amplifier delivering around 400W RMS at 2 ohms is ideal.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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I did receive my package in only a few days which was great. I have opened it and it is the complete kit. Hopefully when I have it installed it works as expected. If so it will have been a great shopping experience with, Audio Jam.
Shipping to took to long a week late
It didn’t work and no instructions included
I did receive my package in only a few days which was great. I have opened it and it is the complete kit. Hopefully when I have it installed it works as expected. If so it will have been a great shopping experience with, Audio Jam.
Good product
