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JL Audio Stealthbox® Custom-fit fiberglass enclosure with two 12" 12TW3-D8 subwoofers — fits 2009-up Ford F-150 SuperCrew and SuperDuty Crew Cab trucks

Item # 13694661

The JL Audio Stealthbox custom-fit subwoofer delivers incredible bass in a package that takes up minimal space and...

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The JL Audio Stealthbox custom-fit subwoofer delivers incredible bass in a package that takes up minimal space and...

Item # 13694661

Special order

C$2,649.95

About the JL Audio Stealthbox®

Bob Bihlmayer

Low-profile 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.
JL Audio Built In USA

Low-profile 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 select 2009-up Ford F-150 SuperCrew and SuperDuty Crew Cab trucks and installs under the rear seat. This Stealthbox® includes two 12" 12TW3-D8 thinline subwoofers from JL Audio and is wired for 2-ohm total impedance. You'll need to remove the under-seat storage tray and factory subwoofer (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.

READ LESS

Product highlights:

  • Stealthbox custom-fit subwoofer
  • sealed fiberglass enclosure
  • two 12" 12TW3-D8 subwoofers
  • installs under the rear seat
  • 800 watts RMS power handling (1600 watts peak power)
  • 2-ohm total impedance
  • requires removal of under-seat storage tray and factory sub (if present)
  • warranty: 2 years
  • MFR # 94661

What's in the box:

  • Custom subwoofer enclosure loaded with two 12" TW3-D8 thinline subwoofers
  • Mounting hardware
  • Installation instructions

Customer reviews for JL Audio Stealthbox®

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Average review:

4.5 out of 5 stars
26 reviews

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More details on the JL Audio Stealthbox®

Pat M.

Product Research

Features

Overview: JL Audio's SB-F-150-SCDBL/12TW3/BK Stealthbox has been specifically designed to fit select 2009 and later Ford SuperCrew full size pickups. Please enter your vehicle information to confirm fit. The enclosure features two 12" 12TW3-D8 subwoofers in a custom down-firing sealed enclosure that mounts under the rear seat.

Subwoofers: The two 12" TW3-D8 thin-line subwoofers offer a combination of a shallow mounting depth and high excursion capability, producing deep powerful bass from a small enclosure. They feature a concentric tube structure built into the injection-molded mica-filled cone body. This supports the voice-coil and spider, while allowing the larger motor structure to be placed further forward in the speaker than with conventional designs. The two dual 8Ω voice-coil subwoofers are wired in parallel to present a 2Ω load on the single pair of terminals, and are capable of handling 800 watts RMS (400 watts RMS each driver).

Enclosure: The Stealthbox enclosure is made of fiberglass covered in black carpet designed to blend in with the vehicle's interior. The enclosure is designed to mount under the rear seat, so no usable cargo or passenger space is taken up. The enclosure will not effect the folding of the rear seats or passenger's leg room.

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Customer Q&A

16 questions already asked

Q
What is the frequency range for these subwoofers?
jason  Sep 24, 2023
1 answer
A
The 12TW3-D8 subs used in this enclosure are rated 24-200 Hz.
zachary  Sep 24, 2023 (Staff)
Q
Does each sub have 800 watts or is it 800 watts all together?
bbell  Apr 08, 2023
1 answer
A
Thanks for your question, Brayden. That sub enclosure has 800 watts RMS total.
andrea  Apr 08, 2023 (Staff)
Q
What amp should i pair this with?
luke  Apr 03, 2023
1 answer
A
Hi Luke, thanks for your question. This amp https://www.crutchfield.com/I-rET1c195/p_161LC1800/AudioControl-LC-1-800.html?tp=35834 will pair perfectly with the that JL Audio Stealthbox with 800 watts RMS at 2ohms. I recommend giving one of our Advisors a call at 1.800.324.9695 or by online chat so they can go over your system and get you all the necessary gear needed to connect and install the amp to your factory or aftermarket head unit.
andrea  Apr 03, 2023 (Staff)
Q
Do the subs come included with the box?
carlos  Jan 31, 2023
1 answer
A
They do, Carlos. Part of the reason these Stealthboxes sound so good is because they are specifically tuned for the JL subwoofers included. All you need to do is add a mono amplifier that is a good match for the JL Audio Stealthboxes 800-watt RMS rating and you are set for some musical, accurate, and downright impressive bass!
bo  Jan 31, 2023 (Staff)
Q
Is there a spot for mounting the amp on the box? Or is there room for an amp under the seat when box is installed?
shelsie  Oct 11, 2021
4 answers
A
I put mine underneath the seat in that storage area and it's been breathing so far
bbell  Apr 08, 2023
A
No there's no room. Amp would have to go behind the seat.
michael  Oct 11, 2021
A
There is no room to mount the amp on the box or under the seat. The box is just tall enough to fit underneath the seat perfectly. I have my amp mounted behind the rear seats. There is tons of room back there.
steve  Oct 11, 2021
A
No there is not. But... you can mount amp behind the seat.
samantha  Oct 11, 2021
Q
What size speaker wire does the box except?
michael  Sep 15, 2021
1 answer
A
I don't know the max size but I'm running 12gauge box dose not disappoint
chris  Sep 15, 2021
Q
What does the wiring attatchment/harness look like on the sub?
reece  Aug 07, 2021
1 answer
A
Its just a standard +/- wire hookup. One positive, one negative
thomas  Aug 08, 2021
Q
In my 2018 Ford raptor 802 a package what amp would you recommend, and what other components do I need in order to utilize the existing system and head unit? I would like to have everything arrive at the same time for a seamless install.
kyle  Jun 20, 2021
1 answer
A
JL Audio recommends matching it with the XD600/1v2 amp. We have advisors that can be reached by calling 1-800-324-9695 who can discuss the specifics of your vehicle and goals to give a personal recommendation on all the parts to complete the installation.
jason  Jun 22, 2021 (Staff)
Q
What subsonic filter frequency is recommended for this enclosure? - thanks
ryan  Oct 12, 2020
2 answers
A
JL Audio recommends the use of the Jl Audio XD600/1v2 amp for power, with several recommended settings for optimal performance. It is recommended to use the LP Filter Slope, and tune the filter frequency to 80Hz. For product advice, or additional information, please chat with us online or by phone at 1-800-324-9695.
jessica  Oct 29, 2020 (Staff)
A
Unfortunately this is NOT a good Sub box , it's fiberglass and it sounds really bad , not a deep bass and the fiberglass makes noise from the bass. Definitely not worth the money that JL is asking. A huge disappointment and waste money.
sergio  Oct 27, 2020
Q
Could these fit with Weathertech F-150 FloorLiner?
bernard  Jun 02, 2020
3 answers
A
Yes it can I meant
michael  Jun 02, 2020
A
Yes I can. I got the complete weather tech set for my sons truck before I got him the box.
michael  Jun 02, 2020
A
Yes, the floor liner stops where there is a "divet" in the flooring, which is as far forward as the box comes.
benjamin  Jun 02, 2020
Q
Does this box give the woofers enough room to travel?
melvin  Apr 05, 2020
3 answers
A
I have them in a 2012 F150. The sound quality is great and theres no indication that the subs are hitting the grill. The box is made by JL so it's designed specifically for these subs so no need to worry about woofer travel issues.
jeff  Apr 06, 2020
A
Yes it does but if you are looking for something to wake your neighbors up this is not the Box for you
swithin  Apr 06, 2020
A
Yes , you don't even kn it's there, love it !!
mark  Apr 05, 2020
Q
what amplifier specs are recommended?
darion  Jan 26, 2020
3 answers
A
I use a Hifonics 1300 watt amp for mine and it works great just don't over due the bass
bbell  Apr 08, 2023
A
One of the Crutchfield experts recommended the JL Audio jx1000/1 mono amp. Works great for me! Sounds great and subs fit perfectly under my seat. https://www.crutchfield.com/p_136JX10001/JL-Audio-JX1000-1.html
jeff  Feb 01, 2020
A
JL AUDIO 1000/1. Nice hard hitting bass for my 2019 f250 crew cab truck.
carlos  Jan 26, 2020
Q
Just bought new F150 Raptor supercrew but don't see it listed- is it going to fit. Also is there a separate sub level control to go with it. Also is there space next to it under the seats for the amp like there is with the single sub box? thanks.
justin  Jan 27, 2019
1 answer
A
It is recommended for 2009 "and up" SuperCrew & SuperDuty Crew cabs, yes. It does not have built-in amplification so, it does not come with a level control. There are many compatible amplifiers that do offer a wired remote (either included with the amp or sold separately). There is no space provided for mounting of the amp under the rear seat. For additional assistance and personalized recommendations, feel free to contact us directly by phone or through our online chat service: https://www.crutchfield.com/support/ContactUs.aspx
ryan  Jan 30, 2019 (Staff)
Q
What amp would be good to use with this?
randy  Oct 11, 2018
1 answer
A
Thanks for your question. For information on selecting the best amp 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.
kristina  Oct 16, 2018 (Staff)
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