JL Audio SBX-T-TCMAX3G/12TW3 Stealthbox 12" 400W RMS (800W Peak Power Handling) 4 Ohms, Dual Voice Coil Car Subwoofer in Sealed Enclosure for 2022-Up Toyota Tundra CrewMax
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What's Inside?
- • 12" Stealthbox Dual Voice Coil Car Subwoofer
- • (1) 12TW3-D4 subwoofer in a sealed enclosure
- • Black steel mesh grille
- • Owner's Manual
Why Choose JL Audio SBX-T-TCMAX3G/12TW3 Stealthbox System?
Highly Optimized Interior Design
Maximize your bass performance in your 2022-Up Toyota Tundra CrewMax with our custom-designed Stealthbox®, fitting snugly beneath the rear seat to preserve space while delivering deep, impactful bass through its powerful 12-inch TW3 thin-line driver. Experience optimal sound quality with its rugged, custom-molded, sealed enclosure design, available now at onlinecarstereo.com!
Custom-Formed Sealed Enclosure
Experience impressive audio output with 400-watt power handling, while its 2-ohm mono configuration enhances compatibility with amplifiers. Conveniently install this subwoofer in the storage tray under the driver's side rear seat, complete with a sleek black steel mesh grille for added protection and style. Rest assured, it's designed exclusively for standard Tundra CrewMax configurations, ensuring a perfect fit every time.
Built in U.S.A. with Global Components
At a time when most audio products are built overseas, JL Audio’s commitment to in-house loudspeaker production continues to grow. To pull this off in a competitive world market, our production engineering team has created one of the world’s most advanced loudspeaker assembly facilities and established a global network of quality component suppliers who build to our specifications. This, combined with our commitment to state-of-the-art assembly technology, allows our skilled workforce to efficiently build JL Audio products to extremely high quality standards, right here in the U.S.A. Since most of our premium loudspeakers incorporate proprietary, patented technologies requiring specific assembly techniques, we find it is vital that the people who designed them have close access to the people manufacturing them. The following JL Audio products are built in our Miramar, Florida factory, with global components.
Frequently Asked Questions (FAQ)
- • Will the JL Audio SBX-T-TCMAX3G/12TW3 fit every Toyota Tacoma Double Cab?
No. This enclosure is designed for specific 3rd-generation Toyota Tacoma Double Cab models. Check your truck's model year and factory configuration before ordering.
- • Why is my 12TW3 not producing much bass after installation?
Incorrect amplifier settings, reversed polarity, or poor wiring are the most common causes. Verify your gain, crossover, and speaker connections first.
- • What amplifier is recommended for the SBX-T-TCMAX3G/12TW3?
A quality amplifier producing around 500 watts RMS at the proper impedance delivers excellent performance. Proper tuning is just as important as amplifier power.
- • Why does the subwoofer distort at higher volume?
Amplifier clipping or excessive bass boost is usually the cause. Reduce the gain and adjust the low-pass crossover correctly.
- • Can I replace the included 12TW3 with another JL Audio subwoofer?
No. The enclosure is engineered specifically for the supplied 12TW3 driver. Installing another model can reduce performance and affect fitment.
- • Why do I hear rattling behind the rear seats when the bass plays?
Loose trim panels, seat latches, or stored tools are the most common sources of vibration. Secure these items before troubleshooting the enclosure.
- • Does this enclosure reduce rear-seat comfort or storage?
No. It is designed to fit behind the rear seats while preserving factory seating and maximizing usable cabin space.
- • Does the 12TW3 require a break-in period?
Yes. Most owners notice smoother and deeper bass after several hours of normal listening as the suspension naturally loosens.
Learn how to wire subwoofers

- Diameter : 12 Inch
- Impedance : 2 Ohm
- Peak Power Handling : 800 Watts
- Number Of Subwoofers : 1
- Vehicle Make : Toyota
- RMS Power Handling : 400 Watts
Features:
- Custom-designed Stealthbox® specifically for 2022-Up Toyota Tundra CrewMax
- Fits snugly beneath the rear seat, maximizing space without sacrificing bass performance
- Features a powerful 12-inch TW3 thin-line driver for deep, impactful bass
- Rugged, custom-molded, sealed enclosure design ensures optimal sound quality
- 400-watt power handling for impressive audio output
- Wired for 2-ohm mono configuration, enhancing compatibility with amplifiers
- Installs conveniently in the storage tray under the driver's side rear seat
- Includes a sleek black steel mesh grille for added protection and style
- Not compatible with hybrid engine models, ensuring a perfect fit for standard Tundra CrewMax configurations
Specifications:
- Diameter: 12 inches
- Sensitivity: 84.11 dB
- Impedance: 4 Ohms
- Frequency Response: 22-200 Hz
- Peak Power Handling: 800 watts
- Top Mount Depth: 3.5 inches
- Shallow Mount: Yes
- Number of Voice Coils: Dual
- Suggested Sealed Box Volume: 0.75 cubic feet
- Suggested Ported Box Volume: 0.95 cubic feet
- Mounting Depth: 3.5 inches
- RMS Power Handling: 400 watts
- UPC: 699440947497
- Weight: 35
- Authorized Internet Dealer
Warranty: 2 Year(s) Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for repair within 1 year from the original date of purchase with proper return authorization.