



Loaded Series · Datasheet
2015-2023 Ford F-150/F-250 Behind-Seat Single 10" Enclosure – Loaded with JL Audio 10TW3 Single 10" Sealed enclosure
- Net volume
- 0.50 ft³, JL Audio's published target
- Tuning
- N/A: Sealed
- Max mounting depth
- 3.25"
- Cutout
- 9-1/16"
- Best For: 2015 to 2023 F-150 and 2017 to 2023 F-250 behind seat
- Configuration: Single 10" Sealed, Vehicle Specific, loaded
- Volume: 0.50 ft³ Net, JL Audio's published target
- Tuning: N/A, Sealed
- Sonic Character: Accurate, controlled, front stage friendly
Spec of record
Technical specifications
| Enclosure | Proline X Vehicle Specific, direct fit behind seat |
|---|---|
| Fits | 2015 to 2023 Ford F-150, 2017 to 2023 Ford F-250 |
| Driver | JL Audio 10TW3-D4, pre-installed |
| Voice Coil | Dual 4 ohm, wired to 2 ohm |
| Enclosure Type | Sealed |
| Net Internal Volume | 0.50 ft³, JL Audio's published target |
| Tuning Frequency | N/A: Sealed |
| Material | Langboard Elite MDF, 3/4" (18mm) |
| Subwoofer Cutout | 9-1/16" |
| Driver Mounting Depth | 3.25" |
| Terminal Cup | Proline X ABS/Carbon Fiber, recessed mount, stainless hardware, copper ring terminals |
| Wiring | Pre-wired 12g OFC speaker wire |
| Polyfill | Installed |
| Finish | Automotive carpet |
| Built | Tullahoma, Tennessee |
Modelled response
Performance in this enclosure
01Is it a sealed driver?
Efficiency bandwidth product places the motor before anything else is decided.
02What the box does to it
0.50 cu ft against a 19.8 L Vas.
03The watts that reach Xmax (in this enclosure)
Travel scales with the square root of power, so there is one wattage that puts the cone exactly on 15.2 mm — and a bigger one once a subsonic filter stops it wasting travel below the passband.
| Param | Value | Unit | Note |
|---|---|---|---|
| Fs | 32.30 | Hz | free-air resonance |
| Qts | 0.620 | D4 | |
| Vas | 19.80 | L | equivalent compliance |
| Sd | 365.0 | cm² | effective piston area |
| Xmax | 15.2 | mm | one-way linear travel |
| Pe | 400 | W | continuous RMS |
| SPL | 81.9 | dB | 1 W / 1 m, derived from T/S |
Driver parameters as published by loudspeakerdatabase.com. Curves computed against this enclosure’s actual net airspace.
From the shop floor
Installer's take
Check your year first. This fits the 2015 to 2023 F-150 and the 2017 to 2023 F-250. Ford changed the platform for 2024 and the boxes do not interchange, so a 2024 truck needs the other build. It is the most common ordering mistake on this line and it costs return shipping both ways.
Plan the amplifier location before you set the box. The enclosure fills the behind seat space by design, which is exactly where most people were intending to put the amp. A compact Class D monoblock will usually go under a front seat or against the rear wall beside the enclosure, but decide that first rather than discovering it with the box already seated.
The driver arrives wired to 2 ohms at the terminal cup, so your only electrical work is the run from the amplifier. Route and test power and signal before final placement, because lifting the box back out to fish a wire is not a two minute job once it is in.
How it's built
Construction

Precision Fit for Ford F-Series Trucks
Tailored Compatibility
The enclosure is designed specifically for Ford F-150 from 2015 to 2023 and Super Duty trucks from 2017-2023. Additional modifications to the truck are needed for it to fit 2024. Call for details. It provides a custom fit behind the seat, ensuring no modifications are needed and guaranteeing a seamless installation experience.
Seamless Integration
The subwoofer enclosure integrates effortlessly into your truck without interfering with any factory components. It allows for clean audio system upgrades while maintaining the truck’s factory finish.
Efficient Use of Space
This enclosure fits behind the rear seat, allowing the driver to maximize the cab's space without compromising audio performance or utility.

Optimal Sound Performance
Enhanced Bass Response
The enclosure's sealed design optimizes the bass output, delivering rich, deep sound. This design ensures that you can enjoy enhanced audio performance without sacrificing clarity.
Vibration Minimization
The structure is crafted to minimize vibrations often occurring with standard subwoofer enclosures. This ensures smooth, clean sound even at high volumes.
Sound Quality Retention
This enclosure is engineered to retain sound quality even when space is limited, offering powerful audio output that complements both factory and aftermarket audio systems.

Maintains Under-Seat Storage Access
Practical Design
The enclosure is engineered to maintain access to the under-seat storage in your truck. This makes it ideal for users who need to preserve storage options while enhancing their audio experience.
Convenient Setup
Installation does not interfere with the truck’s seat functions, allowing easy access to under-seat compartments. This design feature maximizes usability for drivers who require frequent storage access.
Versatility
The enclosure’s compatibility with various storage setups makes it a versatile option for Ford truck owners who prioritize space and sound quality.

Compatible with Multiple 10" Woofers
Flexible Subwoofer Choices
The enclosure is compatible with several 10-inch subwoofer models, giving users flexibility in their audio setup. It offers versatility for various subwoofer preferences without compromising performance.
Designed for Performance
The enclosure is built to handle high-output subwoofers, allowing users to push their audio system to its limits. This makes it a strong contender for users seeking superior bass performance.
Perfect Balance of Size and Power
Despite its compact form, the enclosure can house subwoofers that deliver substantial power. This design feature ensures a balance between space efficiency and sound output.
Before you order
Questions
Which trucks does this fit?
The 2015 to 2023 Ford F-150 and the 2017 to 2023 Ford F-250. Ford changed the platform for 2024 and the enclosures are not interchangeable, so a 2024 or later truck needs our 2024 to 2026 build instead. Check your model year before ordering. It is the most common mistake on this line.
Do I lose seat travel or storage?
No. The enclosure is cut for this specific cab rather than adapted to it, so it sits behind the rear bench without fouling the seat or the factory under seat storage. That is the whole reason a vehicle specific build exists. A universal box in the same space either does not fit or costs you something.
Do I need an amplifier, and how much power?
Yes. This is a passive enclosure with no amplification built in. The driver ships wired to 2 ohms at the terminal cup, so target 300 to 400 watts RMS at 2 ohms from a Class D monoblock. The 10TW3-D4 is rated at 400 watts RMS. If you are keeping the factory head unit you will also need a line output converter or a DSP with speaker level inputs.
What makes the 10TW3 different from other shallow subs?
Most shallow mount drivers get their form factor by shrinking the motor and accepting less excursion. JL Audio's concentric tube architecture puts the voice coil beneath the dust cap and moves the motor structure forward instead, which gives a 3.25 inch mounting depth while keeping 15.2mm of one-way Xmax. That combination does not exist in a conventional shallow driver.
Why only 0.50 cubic feet?
Because that is JL Audio's published sealed target for this driver. It is the alignment the 10TW3-D4 was engineered around rather than a compromise made to fit a truck. It also suits the cab: a truck cab is small, sealed and heavily reinforced, so cabin gain below 80 Hz is unusually strong and a tighter box gives you control while the cab supplies the low end.
Where do I put the amplifier?
Plan this before the box goes in. The enclosure fills the behind seat space by design, which is where most people were intending to put the amp. A compact Class D monoblock will usually fit under a front seat or against the rear wall beside the enclosure. Route and test your power and signal runs before final placement.
What is the warranty on this system?
The enclosure carries a 2 year limited warranty on craftsmanship and materials, which is the standard across the Vehicle Specific line. The JL Audio 10TW3-D4 carries its own manufacturer warranty separately, handled through JL Audio.
Is there a higher output version for the same space?
Yes. The PR Edition uses a passive radiator in the same cab location to extend the low end further than a sealed box can, without needing the port length the space will not allow. We also build a dual 10 version for this platform, and the same cab with the Kicker CompRT 10, the Alpine RS-W10D4 and the Wavtech thinPRO 12 if you prefer a different driver.
Same series, same size
Other Loaded Series models
2015-2023 Ford F-150/F-250 Behind-SeatDual 10" Sealed
2015-2023 Ford F-150/F-250 Behind-SeatDual 10" Sealed
2015-2023 Ford F-150/F-250 Behind-SeatSingle 10" Sealed
2015-2023 Ford F-150/F-250 Behind-SeatSingle 10" Sealed
2015-2023 Ford F-150/F-250 Behind-SeatSingle 10" Sealed
2024-2026 Ford F-150 Behind-Seat SingleSingle 10" Sealed
2024-2026 Ford F-150 Behind-Seat SingleSingle 10" Sealed
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