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JL Audio Stealthbox®

Custom-fit fiberglass enclosure with 10" W1v3 subwoofer — fits 2004-06 Scion xB Generation 1

1 Review | 3 questions - 4 answers

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Item # 13694435

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Our take on the JL Audio Stealthbox®

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.

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.

Perfect sound to go with the perfect fit
JL Audio puts months of research and design into each Stealthbox® custom-fit subwoofer to ensure not only that it fits, but that it sounds better than any other custom enclosed system. First, JL Audio determines the ideal shape and mounting location for each enclosure, so that it looks like an original part of the vehicle it's designed for. Next, they mount each high-performance subwoofer so it delivers amazing firepower from within its unique enclosure, without sacrificing clarity or musical depth.

The fiberglass enclosure offers superior rigidity while allowing more interior volume, so the sub can turn out louder, deeper bass. JL Audio craftsmen then laminate, grind, join, and finish each Stealthbox® by hand. The end result: full-bodied, distortion-free bass from an impressively stealthy enclosure.

Enjoy enhanced, custom-fit sound
This Stealthbox® enclosure fits 2004-06 Scion xB Generation 1. It installs under the passenger side front seat. This Stealthbox® includes one 10" W1v3 subwoofer from JL Audio, wired for 2-ohm impedance. Please check with us before purchasing by using the vehicle selector, or calling an Advisor at 1-888-955-6000 to verify fit information.

JL Audio has rated the difficulty of this Stealthbox® installation as moderate. You should be able to install this enclosure if you have experience with car audio but some vehicles may require modifications.

Product Highlights:

  • Stealthbox® custom-fit subwoofer
  • sealed fiberglass enclosure
  • W1v3 10" 2-ohm subwoofer
  • installs under the passenger side front seat
  • power handling: 50-300 watts RMS (600 watts peak power)
  • warranty: 2 years
  • Our 60-day money-back guarantee

What's in the Box:

  • Custom subwoofer box with one loaded 10" woofer
  • Two 3/8" Split-lock washers
  • Two 3/8" x 1-1/4" fender washers
  • Two 3/8-16 x 2-1/4" sect-screws
  • Two 3/8-16 hex nuts
  • Two 3"x 3" wax squares
  • Installation Guide
  • Warranty sheet

JL Audio Stealthbox® Reviews

Average Customer Review(s):

(1 Review)

Exceeds my expectations greatly

fisqual from Columbus, OH on 12/1/2014

2005 Scion xB
Crutchfield Customer Review (What's this?)

So, I finally bit the bullet and bought one of these and I am so glad I did! This is 150% exactly what my sound system needed. This little sub can peacefully fill out the missing sound spectrum from my lightly upgraded system, OR it can vibrate the heck out of everything not properly secured/dynamatted in my xB. This sub is capable of hitting harder and lower than full size 12" Alpine subs I had in a previous vehicle. If my ears serve me right, I got good consistent volume down to about 28Hz. For the longest time, I had been toying with the idea of fabricating a box to tuck under my passenger seat, possibly out of MDF or fiberglass. To anybody considering that option, you really should just save up the money for this little guy. I installed it under my seat in about 15 minutes (including removal and installation of the passenger seat). ...Save yourself the headache. Buy this. Now.

Pros: Very high build quality Great sub/box pairing creates crisp clean bass (or can be turned up to 11 to deafen you) Easy to install -- Only requires a 14mm wrench and a drill Perfect fitment, really maximizes the space available under the passenger seat. You won't mind the price after you buy it. Wire clips are very sturdy. Carpet matches my interior perfectly. Surprisingly lightweight.

Cons: You literally need to drill 2 holes through the floor of your car to properly secure the box. I tried driving around with it unsecured and it slid around a lot. Also the holes where the threaded rods go are open to the inside of the box, so you need to seal those holes if you don't bolt it to your floor. ...As I live in the rust belt, I smothered the entire area around the holes I made in my floor with Toyota seal and then sprayed undercoating liberally around the holes I made to prevent rust


Hands-on research

Product Research


Overview: JL Audio's Stealthbox subwoofer systems are designed to hide away in a specific vehicle. Please consult "Outfit My Car" to confirm compatibility with your vehicle.

Construction: Stealthboxes are hand-crafted from fiberglass and/or Advanced Molded Composite (AMC) materials. Fiberglass delivers a level of enclosure rigidity and dimensional stability not possible with other enclosure materials, allowing wall thickness to be reduced compared to a typical wood enclosure. This gives you more interior box volume for a given external volume. Fiberglass and AMC materials are very strong and can be molded into very complex shapes; giving JL Audio the ability to design your Stealthbox to fit perfectly into tight spots and minimize intrusion into your vehicle's useful space. Each Stealthbox is laminated, ground, joined, and finished by hand in the USA. Proprietary techniques and materials developed by JL Audio through years of fiberglass manufacturing experience ensure consistent quality and performance.

Woofer: One 10" JL Audio W1v3-2 subwoofer is loaded in this enclosure. The woofer has a single 2Ω voice coil, so the impedance presented at the enclosure's speaker terminals is 2Ω.

  • Dynamic Motor Analysis (DMA): DMA is JL Audio's proprietary method of improving dynamic motor behavior. As a result of DMA optimization, the W1v3-2 motor remains linear over a long excursion range, and maintains a stable, fixed magnetic field in the gap over a wide power range. The result is reduced distortion, faithfully reproduced transients, and tight, clean, articulate bass.
  • Floating Cone Attachment Method (FCAM): JL Audio's patented FCAM technology is an innovative method of bonding the surround/cone assembly to the voice coil/spider assembly. This assembly technique ensures proper surround geometry in the assembled speaker for better excursion control and dynamic voice coil alignment.
  • Vented Reinforcement Collar: The Vented Reinforcement Collar (VRC) is a composite structure that addresses two issues related to reliability:
    • Stress Relief: By reinforcing the critical junction between the cone, voice coil and spider, the VRC reduces failures due to glue breakdown or material weakness. It does this by increasing adhesive contact area and providing stress relief to the spider material at excursion extremes.
    • Air Flow: The VRC also features slots that facilitate air flow directly onto the voice coil windings, thus reducing thermal compression effects and enhancing reliability.
  • Insert Molded Suspension/Coil/Terminal Sub-Assembly: The W1v3-2 features a unique spider, coil and terminal subassembly, assembled prior to installation in the speaker frame for optimum alignment and glue-joint integrity. This type of assembly ensures precise lead wire length, lead wire entry and exit angles, and coil/spider alignment.
  • Elevated Frame Cooling System: The elevated frame design of the W1v3-2 delivers cool air through slots directly above the top-plate to the voice coil. This not only enhances power handling, but also sound quality by minimizing dynamic parameter shifts and power compression.

Our Product Research Team

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Q & A

Customer Q&A

3 questions already asked

Unfortunately no, we do not have these in our warehouse as they ship directly from the manufacturer. [ Kenny  Dec 29, 2015 ]  Staff
JL Audio does not publish the dimensions of their Stealthbox enclosures. They are made to fit the specific location of the vehicle. This one is made to fit under the passenger's front seat in 2004-2006 Scion xB (Generation 1) vehicles. You can view the owner's/installation manual by clicking the "Details" tab on the Stealthbox's main webpage. You'll find the link for the manual under the "What's in the Box?" heading. I hope that helps! [ Ryan  Dec 30, 2015 ]  Staff
If at all possible, I'd look for a "mono" amplifier; it won't have any technology inside it that you don't need. Look at the watt rating in RMS. Ideally you should try to go ABOVE the rating of the speaker. For instance, the amp I have connected to this sub is 600 watts RMS, but I only run it at about 1/2 power. It produces a much cleaner sound running at half power than if you get something that's 300 watts RMS and run it at full blast. ...This will make the speaker last longer because you avoid "clipping" (distortion caused from amp over-drive) and the amp will last twice as long because you aren't running it at maximum capacity (similar to driving a car at redline). [ Fisqual  Sep 02, 2015 ]
Thanks for your question. For information on selecting the best amp for your subs I would recommend reaching out to an Advisor by phone (1-800-324-9695) or online chat. They will be able to help determine the differences between the amp models and help you make the best choice for your system. [ Krissy  Aug 04, 2014 ]  Staff