JL Audio Stealthbox®

Custom-fit fiberglass enclosure with 10" W1v2 subwoofer
Fits 1999-up Ford SuperDuty trucks (with front 40/20/40 split bench seats)

Item #: 13694009

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2 Reviews | 1 question - 1 answer

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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 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 1999-up Ford SuperDuty trucks with front 40/20/40 split bench seats. It replaces the center seat cushion of the front seat and the factory upholstery covers it. This Stealthbox® includes one down-firing 4-ohm 10" W1v2 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 moderate or high. Crutchfield recommends using a car audio professional to install this enclosure, unless you have extensive experience installing car audio gear.

Note: This Stealthbox® enclosure will not fit in the F-150 or in models with bucket seats and a center console. And though it's a visual match, the Stealthbox® is not as comfortable to sit on as the factory seat cushion.

Product Highlights:

  • Stealthbox® custom-fit subwoofer
  • sealed fiberglass enclosure
  • 4-ohm 10" W1v2 subwoofer
  • replaces center seat cushion of the front seat
  • power handling: 50-300 watts RMS (600 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.

Hands-on research

What's in the box?

Download owner's manual

  • Custom subwoofer box with loaded 10" woofer
  • 3 Hex-head bolts (Length=1-1/2")
  • 3 Aluminum spacers
  • 3 Split lock washers
  • 8" Strip of adhesive backed hook and loop fastener
  • Installation Guide
  • Warranty sheet

Product Research

Features

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: A 10" JL Audio W1v2 subwoofer is loaded in this enclosure and features an injection-molded, metallic-finish polypropylene cone woofer with a butyl rubber surround for added durability, woofer excursion, and bass response.

  • Surround Stress Relief: By creating a radius 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.
  • Interlocking Cone & Dust Cap: The W1v2's utilize a dust cap that is not just glued, but also interlocks with features molded into the cone body for a tight snap-fit. This creates a more rigid cone assembly and a more reliable dust cap attachment.
  • Dynamic Motor Analysis (DMA): DMA is JL Audio's proprietary method aimed at improving dynamic motor behavior. As a result of DMA optimization, W1v2 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: 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 greatly reduces failures due to glue breakdown or material weakness. It does this by greatly 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. This reduces thermal compression effects and enhances reliability
  • Insert Molded Suspension/Coil/Terminal Sub-Assembly: The W1v2 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. This type of assembly ensures precise lead wire length, lead wire entry and exit angles; and coil to spider perpendicularity.
  • Elevated Frame Cooling System: The elevated frame design of the W1v2 delivers cool air 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.

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 open the box, verify contents, 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.

JL Audio Stealthbox® Reviews

Average Customer Review:

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Read directions carefully

Written By Baha, Athens Ga on Saturday, December 21, 2013

Close to perfect fit but not exactly perfect. Be very careful with the installation. There is a section of the installation instructions that tell you to use 3 spacers. What they don't make very clear is they are different sizes. Very close however different. So when I put everything back together the arm rest was sitting crooked. Had to take everything back apart and I do mean everything! Added at least an extra hour to the installation. Not fun when you are in the driveway while it's cold and drizzling rain. I consider myself a professional with over 20 years of audio installation experience so I'm thinking if this is your first install just watch out for that. The rest of the installation was pretty simple and subwoofer sounds great. Would expect no less from JL Audio.

Pros: Sounds great and looks like it came from the factory.

Cons: Directions could be a little better. Should highlight or a least use a bold text on some of they key factors.

Retains the original Factory look

Written By Rudy, Rosenberg, TX on Wednesday, March 03, 2010

Crutchfield Customer Review (What's this?)

(2006 F-250 Crew Cab Diesel) From the start, the instructions were well put and detailed. It was very easy to retro-fit and install this sub. I mounted my amp directly below the sub which barely had enough room, but it fit. Having this close to the driver's seat allows for the full "feel" of your music. The most important sell on this is the fact that I do not have to sacrifice valuable cab space to mount a sub box and amplifier. I also wanted an original factory look so wandering eyes don't take notice to what I have. I can still have seating for 6, good BANG, and a professional look inside the cab of my rig. This eliminates the amateur look of a generic felt box and amp sliding around on the back seat of the truck or taking up the back seat... Price is a little high, but worth it because there is NO CLUTTER!!

Questions & Answers Ask the community. Share your knowledge.

1 question already asked

Many amplifiers features speaker level inputs that will allow you to tap off your current speakers to get the signal for the amp. The other option would be to us an adapter that convert from speaker level to the lower RCA level. For help in picking out an amp, I would recommend contacting an Advisor by phone or chat. They will be able to look at what will match your system, and make sure you have everything you need for the install. [ Jeff  Dec 18, 2013 ]  Staff

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Fits 1999-up Ford SuperDuty trucks (with front 40/20/40 split bench seats)