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JL Audio Stealthbox®

Custom-fit fiberglass enclosure with 13.5" TW5-v2 subwoofer — fits 2007-up Jeep Wrangler Unlimited (Gray)

3 Reviews | 4 questions - 4 answers

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Item # 13694418

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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 contains one 13-1/2" TW5-v2 subwoofer and fits 2007-up Jeep Wrangler Unlimiteds. It installs against the passenger-side wheel well (factory sub will need to be removed, if equipped). Please check with us before purchasing by using the vehicle selector on our site, 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.

What's in the Box:

  • Custom subwoofer box with one loaded 13.5" woofer
  • Two 3/8" x 1-14" fender washer
  • Two 3/8" Split-lock washers
  • Two 3/8-16 x 2-1/4" allen-head studs
  • Two 3/8" flat washers
  • Two 3/8"-16 hex nuts
  • Two 3" x 3" square wax sheets
  • Installation Guide
  • Warranty sheet

Scratch & Dent items may be missing non-essential accessories. In some cases the manufacturer's accessories have been replaced with generic equivalents.

Product Highlights:

  • Stealthbox® custom-fit subwoofer
  • sealed fiberglass enclosure
  • 13-1/2" 2-ohm 13TW5-v2 subwoofer
  • bolts to the passenger side wheel well
  • power handling: 100-600 watts RMS (1,200 watts peak power)
  • warranty: 2 years
  • Our 60-day money-back guarantee

JL Audio Stealthbox® Reviews

Average Customer Review(s):

(3 Reviews)

Bada$$ product by JL

Tim from Naples,FL on 9/1/2016

2012 Jeep Wrangler Unlimited
Crutchfield Customer Review (What's this?)

Nothing you buy to make your jeep your own is cheap why would this be any different?! JL is by far my favorite audio company been installing their product for decades now!! The product is great well built and sturdy!! I installed mine in a '13 jku amd only had 1 issue and i assume its due to the fact is made for 07-12 jeeps. But the one allthreaded bolt wasnt long enough in the hole that goes closest to the tailgate! I had to go buy a 3/8 by 3" bolt! Another small issue is you storage compartment lid wont open freely but i again assume its because of the '13. Other then that it its all good!!

Pros: Best audio company out there! Sounds great

Cons: None


Doug r. from Saratoga ny on 4/22/2016

Crutchfield Customer Review (What's this?)

After speaking with a JL Tech this will fit my 2015 jku "just not perfect". Looks like a pretty perfect fit to me however! Removing the inner fender well was a little bit of a PIA and drilling is required but well worth it. It is bolted down in 2 points with 5/16 studs to make sure it is securely mounted and preventing theft. Fit and finish is great. You do however lose approximately 7" on the passenger side of the rear cargo area that is now taken up by the stealth box. You CAN also still open the cubbie in the center floor to access stowables and the jack. Sounds awesome just make sure u have enough power going to the stealthbox. Even with the top off at 80 mph and 35" tires you are rockin out. It's pricey but with the sound and clean install it's worth it.

Pros: Awesome sound and clean install.

Cons: Pricey.

Love It

OdyW from The Colony, TX on 5/7/2015

I have a 2013 jku sport. I just got the woofer about a week or so ago and love it. I have never had a sealed box before but am a huge fan of it, it is so clean and crisp sounding works perfect for everything from classical to drive-inn movies to metal to praise and worship to rap. The box hits really well on the mid to low mids. I am using the 1000xd amp which pairs very nice with it. Yes it is expensive, Yes you can get a lot better sounding stuff for like half the cost. But you wont get to keep all your cargo space nor will you get the concealment of it.(if you have the top off without a cargo cover you can clearly see it from the rear seats) I would recommend getting a Good 500-600 watt amp.

Pros: Nice fill in sound Nice at really anything you put to it music wise and if you get a good heavy bass song you get a back message for all passengers if installed correctly fits under cargo covers It is out of the way conserves space

Cons: Interferes slightly with opening the compartment in the trunk area cost inner splash guard rattles if your standing on the outside


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 13.5" JL Audio TW5, 2-ohm subwoofer is loaded in this sealed enclosure.

  • Thin-Line Design: The patented thin-line woofer technology compresses the architecture of the JL Audio 13TW5-v2 subwoofer and allows it to deliver great bass performance in the tightest space applications that are only 2.5" deep. Central to the technology is the "concentric tube" structure that supports the oversized voice coil and the suspension attachments. This permits placing the motor of the woofer much further forward in the speaker than with conventional designs, while maintaining excellent linear excursion capability. Equally important is the fact that the 13TW5-v2 design is optimized for extremely small box volume applications. Whereas a typical "small-box" 12-inch driver operates in well over one cubic foot, the larger 13TW5-v2 is optimum in only 0.80 cu.ft. (significantly less volume than any other JL Audio 13.5-inch woofer).
  • Concentric Tube Suspension: The challenge in any low-profile woofer design is to permit enough mechanical clearance for the speaker to handle power and generate good output at low frequencies. JL Audio's patented solution employs a molded structure which spans over the edge of the motor system, supporting the spider on the outside of the motor's boundaries and the large diameter voice coil on the inside. The large voice coil permits the magnet to sit inside it, rather than surrounding the coil as is typical in most woofers. The concentric tube structure and the elimination of a conventional top-plate helps JL Audio to place the motor system higher up into the cone body's space to further compress depth, while still permitting excellent mechanical excursion.
  • Mica-Filled Polypropylene Woofer: The JL Audio 13TW5-v2 subwoofer features an injection-molded, mica-filled polypropylene cone woofer with a santoprene rubber surround for added durability, woofer excursion and bass response.
  • Dynamic Motor Analysis (DMA): DMA is JL Audio's proprietary method aimed at improving dynamic motor behavior. As a result of DMA optimization, the 13TW5-v2 motors remain linear in motor force over a very long range of excursion, and also maintain a highly stable fixed magnetic field in the gap over a wide power range. The result is vastly 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.
  • Extra Large Voice Coils: To counteract the efficiency tradeoff of small box volumes, the 13TW5-v2 is designed to handle very high power levels thanks to the use of a very large 7-inch diameter voice coil.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

4 questions already asked

I do not see the specific dimensions listed online. For details on fit please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle. [ Jeff  Dec 18, 2015 ]  Staff
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  Feb 26, 2014 ]  Staff
For details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on any known fitment issues. [ Greg  Jul 22, 2015 ]  Staff
I forwarded your question to an Advisor and they responded with the following: The subwoofer mounts into the Jeep Wranglers using washers, studs and nuts included. Online under the details tab you can see everything that is in the box, as well as the owner's manual which also has picture instructions that you may find helpful. If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat. [ Krissy  Apr 01, 2015 ]  Staff