About the JL Audio Stealthbox®

A bass enclosure designed for your vehicle
A bass enclosure designed for your vehicle
The JL Audio Stealthbox® custom-fit subwoofer delivers incredible bass in a package that takes up minimal space and blends in with your vehicle's interior. JL Audio designs Stealthboxes to fit in specific vehicles, then loads them with appropriate subwoofers for optimal performance. Pair the system with an appropriate amp and wiring for stellar concealed bass.
Enjoy enhanced, custom-fit sound

The installed Stealthbox replaces the SUV's mid-gate.
This Stealthbox® enclosure fits in 2002-13 Chevrolet Avalanche and 2002-09 Cadillac Escalade EXT SUV models. This new model offers a much lower profile than the previous Stealthbox made for this vehicle. It replaces the factory mid-gate while retaining folding functionality to allow access between the cabin and bed. This Stealthbox® includes a pair of TW3 thinline 12-inch subs that handle up to 800 watts RMS, wired together for 2-ohm mono impedance. Please check with us before purchasing by using the vehicle selector on our site, or calling a Sales Advisor at 1-888-955-6000 to verify fit information.
JL Audio has rated the difficulty of this Stealthbox® installation as low to moderate. Crutchfield recommends using a car audio professional to install this enclosure, unless you have extensive experience installing car audio gear.
Note: Rear glass storage area is lost with this installation.
Product highlights:
- Stealthbox® custom-fit subwoofer
- sealed fiberglass enclosure
- two 12TW3-D8 12" subwoofers with dual 8-ohm voice coils, wired for 2-ohm mono
- replaces factory mid-gate while maintaining folding capability
- power handling: 800 watts RMS (400 watts per speaker)
- warranty: 2 years
- MFR # 94298
What's in the box:
JL Audio Stealthbox® owner's manual
- Custom subwoofer enclosure loaded with two 12" TW3-D8 thinline subwoofers
Customer reviews for JL Audio Stealthbox®
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More details on the JL Audio Stealthbox®

Product Research
Features
Overview: JL Audio's SB-GM-AVAL/12TW3 Stealthbox has been specifically designed to fit select 2002 - 2013 Chevrolet Avalanche and 2002 - 2009 Cadillac Escalade vehicles. It features two 12" TW3-D8 subwoofers in a custom sealed enclosure that mounts in place of your vehicle's mid-gate while still maintaining its folding functionality.
Subwoofers: The JL Audio Stealthbox's two 12" TW3-D8 thin-line subwoofers offer a powerful combination of a shallow mounting depth and high excursion capability. They feature a "concentric tube" structure built into the injection-molded mica-filled cone body. This supports the voice-coil and full annular spider, while allowing the larger motor structure to be placed further forward in the speaker than with conventional designs. This can produce deep powerful bass from a small enclosure. The two dual 8 ohm subwoofers are wired for a 2 ohm output to a single set of terminals, and are capable of handling 800 watts RMS (400W RMS each driver). Black steel mesh grills are included for both drivers.
Enclosure: The Stealthbox enclosure is made from 100% fiberglass that's been coated in a durable textured material designed to match the vehicle bed. The enclosure has been configured to mount in place of the factory mid-gate using the original factory hardware. This maintains access between the cabin and bed for carrying long items.
Note: Rear glass storage will be lost after installing the JL Audio Stealthbox.
The JL Audio Stealthbox® replaces these items

JL Audio Stealthbox®
Fits 2002-up Chevrolet Avalanche / Cadillac Escalade EXT models
- black Stealthbox® enclosure replaces factory mid-gate
- two 12" W3v3 subwoofers
- power handling: 200-1,000W RMS
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Did an easy re-wire of the speakers dropped to 1ohm running on a Memphis 1000 - PRX1000.1. Sounds amazing!
Brad M. from Conway, AR