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JL Audio Stealthbox Single®

Custom-fit ported fiberglass enclosure with 10" W3v3 subwoofer
Fits 2004-up Ford F-150 SuperCab and SuperCrew trucks (Tan)

Item #: 13694374

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11 Reviews | 1 question - 4 answers



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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 ported 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® ported enclosure fits 2004-up Ford F-150 SuperCab and SuperCrew pickups, as well as 2006-up "Harley Davidson" edition vehicles. It installs under the driver side rear bench seat and raises the base of the seat slightly. This Stealthbox® includes one down-firing 10" 2-ohm W3v3 subwoofer from JL Audio. 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. You should be able to install this enclosure if you have any experience with car audio.

Product Highlights:

  • Stealthbox® custom-fit subwoofer
  • ported fiberglass enclosure
  • 10" 2-ohm W3v3 subwoofer
  • fits under driver side rear seat
  • power handling: 100-500 watts RMS (1,000 watts peak power)
  • warranty: 2 years
  • Our 60-day money-back guarantee

Vehicle-specific enclosures with subs? Say what?

Instead of the usual sub in a box, the manufacturer creates a molded enclosure that fits perfectly into a convenient spot in your specific vehicle, housing a high-quality sub. Some enclosures even include a built-in amp, for the ultimate in stealth bass. The advantages? You don't lose much space (if any), your sub is perfectly matched to its enclosure, and your enclosure has a factory look that won't tell potential thieves you have an awesome sound system. Doesn't get better than that.

JL Audio Stealthbox Single® Reviews

Average Customer Review:

11 Reviews


Written by: Kevin from Nevada on October 23, 2015

2005 Ford F-150
Crutchfield Customer Review (What's this?)

It's a JL product, enough said

Pros: Great thump for a single 10" sub Super easy to install


f 150 stealth box

Written by: Anonymous from North Carolina on June 26, 2015

Crutchfield Customer Review (What's this?)

i could not be happier with this speaker. it fits perfectly and sounds great. i would give it 5 stars but the price was a little on the steep side. nonetheless, it sounds and looks amazing.

Pros: sound, quality, size

Cons: price

On the fence

Written by: Chris from San Pedro, CA on June 15, 2015

Crutchfield Customer Review (What's this?)

Bought this a couple of weeks ago. I love the idea of a custom speaker box for my 07 F150 Super Crew. Also, really love the sound of JL Audio speakers. What I was disappointed about, was the fact that the box didn't fit as well as advertised. It sits a little high, causing the bench to barely lock in the down position. Also the length of the box interferes with the jack. So you will have to relocate it, if you want to keep it.

Pros: Good quality contruction.

Cons: Doesn't fit as advertised.

Crutchfield response on June 17, 2015 We forwarded this review to our Technical Support team for follow-up. Lifetime tech support comes with every Crutchfield purchase.

F150 stealthbox

Written by: A Holland from Oklahoma City, OK on November 4, 2014

Crutchfield Customer Review (What's this?)

Fit and finish is perfect. The unit moves a lot of air, which is problem in this truck without an active DSP. JL solved the phase issues with the truck. I sent mine back only because I couldn't get the bass to "disappear", meaning that I don't want to localize the bass. It has the usual tactile transfer you get with a down-fire sub so you will always feel the bass, which is bad in completion. If you are looking for a lot of bass and don't compete in sound quality completion this box is for you. Don't balk at the price, it's well worth it. Crutchfield customer service is second to none.

Pros: Amplitude, fit and finish, overall quality

Cons: Tactile transfer, bass is easy to localize

Don't hesitate best sound so far in 06 SCrew

Written by: Brian from Pa on July 17, 2014

Crutchfield Customer Review (What's this?)

Let me start off by saying I was really skeptical of this.I've tried every thing to fit under my back seat to get the bass I was looking for. And i have came close the closes thing was the pioneer Sw250x shallow mount 10 it was really good for what I needed for awhile. It hit ok for sealed small box but the lows wasn't there so I always wanted to try this stealth box but the price was to much this price is way to steep for these things even though they don't cost that much to build thats why I gave it 4 stars.Well I got a scratch and dent for a lot less so I jumped on it and let me tell you one word sums it up AWESOME! It sounds so good and the bass hits so good loud I'm running an alpine mrp-m500 witch is 500 watts rms @2ohm The sub In the stealth box is also 2ohm.I wouldn't pay full price for it but I'd pay the scratch-and-dent price for it. Don't hesitate just find one for around that price there out there or just keep checking back at Crutchfield your bound to score like I did but it is definitely the best I've heard I had 2 solobarics L7's and this thing sounds almost as good as they did if someone tells you differently then they did something wrong with the install or they don't have a good amp to push the power to make it rock alpine mrp-m500 pushes this thing greatly so for the price you will have an amp to push it. It does work those of you that are still hesitating trust me. The guys at my job hear me coming 3 to 4 blocks away now I am very happy with it wish I would have looked for one sooner.

Pros: Great sub JL audio knows how to make it work it really does work very strong material

Cons: Price is way to much 500 bucks would be good enough to pay


Written by: MarkB from Des Allemands, La on June 7, 2014

2006 Ford F-150
Crutchfield Customer Review (What's this?)

If you're looking for an easy installation, a great look and an awesome sound look no further than the JL Stealthbox. Let the concert begin!

Pros: Easy installation, Great Looks, Awesome sound

Cons: none

Great addition to the truck!

Written by: ZachB from Stafford, VA on January 16, 2012

Was given this along with a 250/1 JL amp by a friend who traded in his F150...just finished installing it in mine and WOW, never expected that from a 10'' sub! The box fits perfectly and doesn't sacrifice leg room.

Pros: Custom fit

Cons: Takes up under seat storage

True Bass Sound

Written by: Ronny from Kansas on September 16, 2009

I just recieved the stealth box for my 2004 F-150. Very easy installatilon with the supplied screws to the factory holes on the seat. The sound is very clear and matches my JL Audio 500/1, specially if you listen to any type of music. The price is a bit too high for one subwoofer. For the best sound make sure you set the 500/1 to JL Audio specifications. The box is very light and it is almost flushed with the back seat without losing leg room. It also makes the truck look like it has no sound system. Now I have completed my JL Audio system!!!



JL Audio Stealthbox Single®

Written by: Emmanuel from Laredo, TX on July 2, 2009

Crutchfield Customer Review (What's this?)

After trying several different boxes that go under the seat and getting disappointed each time. I decided to give JL a try. I haven't heard of bass this good from an under the seat box, ever. At first I was skeptical due to the price of this thing but as soon as i heard it for the first time I was impressed to say the least. It even comes with bolts to be bolted down to factory locations a complete plus. Far exceeded my expectations on everything I was looking for. Truly the best box you can find for a factory look and keeping a clean install.



Sweet Box

Written by: James from Burlington, MA on March 10, 2009

2008 Ford F-150
Crutchfield Customer Review (What's this?)

I have a 2008 Black F150 Super Crew with black leather seats. This sub box fit great under the rear seat. I have seen statements where it says the back seat is slightly lifted following installation; however, I cannot if it is, it is VERY small. It blends in nicely. The sound is great. Its perfect for what I wanted. I'm running 300 watts to it via an Alpine Amp and it sounds awesome. Its a little pricey, but it is worth it in every way. The box is very well made, the sub is a W3. JL Audio is the way to go.



Good solid sound

Written by: Ken from Atlanta, Ga. on February 8, 2009

Crutchfield Customer Review (What's this?)

If you have a Ford F150 and are looking for good solid bass and great mid bass punch and still want a factory look, just buy this jl audio stealthbox and be done with. The sound quality is great, and ofcourse it sounds like more than one ten inch woofer. I know the price is steap, but you will get over that eventually. Great speaker and enclosure all in one.



Hands-on research

What's in the box?

Download owner's manual

  • Custom subwoofer box loaded with 10" woofer
  • 2 Socket-cup set-screws
  • Two 3/8" Flat washers
  • Two 3/8" Split-lock washers
  • Two 3/8" hex nuts
  • 1-1/2" Fender washer
  • 3x3" Wax sheet
  • Installation Guide
  • Warranty sheet

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 W3v3-2 subwoofer is loaded in this sealed enclosure and wired as a 2Ω load at the enclosure's 5-way post speaker terminal.

  • Dynamic Motor Analysis (DMA): DMA is JL Audio's proprietary method aimed at improving dynamic motor behavior. As a result of DMA optimization, W3v3 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.
  • Vented Reinforcement Collar (VRC): The Vented Reinforcement Collar is a composite structure that addresses two issues related to reliability. By reinforcing the critical junction between the cone, voice coil and spider, the VRC greatly reduces failures due to glue breakdown or material weaknesses. It does this by greatly increasing adhesive contact area and providing stress relief to the spider material at excursion extremes. the VRC also feature slots that facilitate air flow directly onto the voice coil windings to reduce thermal compression effects and enhances reliability.
  • Spider/Lead Wire Assembly: The W3v3 features a unique spider, coil and terminal subassembly which is assembled prior to installation in the speaker frame for optimum alignment and glue-joint integrity. The spider is insert-molded into a composite carrier tray which also incorporates the terminal assembly and lead wire strain relief features for enhanced reliability and optimal alignment of parts. The flying lead wires are carefully controlled and strain-relieved without resorting to woven-in lead wires, which can degrade spider performance.
  • Elevated Frame Cooling: The elevated frame design of the W3v3 delivers high-velocity air flow through slots directly above the top plate to the voice coil of the speaker. This not only enhances power handling, but also sound quality by minimizing dynamic parameter shifts and power compression.
  • Surround Stress Relief: By creating a radiused feature on the edge of the cone, stress is relieved from the surround material at maximum forward excursion, resulting in longer life and more consistent surround behavior.

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.

Customer Q&A

1 question already asked

Yes, the factory subwoofer has to be removed. The factory amp is built into that enclosure, and even though it can be removed, it doesn't have nearly enough power to power a 10w3. [ ADAM D  Dec 22, 2015 ]
I didn't have the factory amp. I added a aftermarket amplifier [ PATRICK  Dec 21, 2015 ]
I would delete the factory sub! My ride didn't have the stock sub so I did t have they decision to contend with. I will say that the JL sub produces amazing sound and performance. [ PATRICK  Dec 21, 2015 ]
This will depend largely on your vehicle. For details on 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 what you will need for an installation. [ Kenny  Dec 21, 2015 ]  Staff

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Fits 2004-up Ford F-150 SuperCab and SuperCrew trucks