Stage 5 Platinum Plus
The Ultimate Under-Seat Subwoofer System for Ford Trucks
This isn’t a universal subwoofer box. It’s a high-end, show-quality enclosure engineered specifically for Ford F-Series trucks and loaded with (2) Wāvtech Thin Pro 12" subs. Built to hit hard, look insane, and deliver real, high-end audio performance every time you drive.
If you want the loudest, cleanest, most premium solution you can put under the rear seat, this is it.
Fitment
Built Specifically for Ford F-Series
- Designed for Ford F-150 / 250 / 350 (crew cab under-seat fitment).
- 3D-modeled around the factory floor and seat geometry for a perfect OEM-plus fit.
- No seat lift required — rear seat still functions as normal.
- Maintains a clean, factory look with a custom, show-quality finish.
What’s Included
Everything That Comes with Your Stage 5 Platinum Plus
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Custom Engineered Enclosure
Sealed under-seat enclosure engineered specifically for Ford F-Series for tight, accurate bass.
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Loaded with (2) Wāvtech Thin Pro 12" Subs
Premium slim subs chosen for real output, sound quality, and reliability in a daily-driven truck.
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Windows, Lighting & Acrylic Braces
Acrylic viewing window with back-lit glow plus internal acrylic bracing wrapped in color-matched
upholstery for a true show-truck level build.
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Pre-Wired & Ready to Drop In
Every enclosure is fully pre-wired, subs mounted, sealed, and tested. Includes our custom 3D-printed
plug-and-play terminal cup so installation is clean, fast, and reliable.
Does not include amplifier, wiring kit, or DSP — those are available separately and as a fully loaded package in our other system categories if you want everything matched and ready.
Does not include amplifier, wiring kit, or DSP — those are available separately and as a fully loaded package in our other system categories if you want everything matched and ready.
Performance
How It Sounds
This setup is built to be violent when you want it or sound clean when you don’t. You get deep low end, tight response, and a controlled sound that isn’t boomy or muddy.
For best performance we recommend powering the enclosure with a Wāvtech link1500.1 or comparable quality mono amplifier at a 1Ω load (~1500W RMS). That’s the sweet spot for output, control, and reliability.
If you’d rather not piece everything together, we also offer fully loaded system packages with an amp, wiring, and amp rack so the whole setup is matched and ready.
Built by CB Customs
Craftsmanship, Lead Time & Warranty
- Hand-built in Weatherford, Texas — every enclosure is cut, assembled, and finished in-house.
- Pre-wired & quality checked — every enclosure is assembled, wired, and bench-inspected before shipping.
- Built to order — we’ll confirm your estimated lead time when you order, and tracking is sent as soon as your enclosure ships.
- Lifetime craftsmanship warranty on the enclosure itself.
- Support from a real builder — if you have questions before or after ordering, we’re here to help.
Stage 5 Platinum Plus • In-Truck Video
See the Stage 5 Platinum Box Installed in a 2026 F-450 Platinum Plus
Quick walk-through showing the real fitment and details under the rear seat — clean install, premium finish, and it doesn’t mess with rear seat function. If you want to see how this actually looks in the truck, hit play.
Want the full build breakdown (photos + details)? Click View Full Build below.
Fitment note: This is built around the factory floor + seat geometry for an OEM-plus fit.
If you want us to confirm your exact truck (year/trim/sub choice), hit Contact Us and we’ll make sure you’re dialed.
Compare CB Customs Stages
All stages are engineered for real performance. The higher the stage, the more show-level details (acrylic, lighting, and visual flex) you get on top of the sound.
| Feature | Stage 1 OEM+ Clean |
Stage 2 Acrylic Accent |
Stage 3 Most Popular |
Stage 5 Platinum Plus |
|---|---|---|---|---|
| Overall look | Clean OEM-plus enclosure, no acrylic, no lighting. | OEM-plus with a single acrylic accent panel. | Full custom acrylic face & design details. | Full show-truck treatment with acrylic window, RGB lighting & premium cosmetics. |
| Acrylic panels | None | Standard front acrylic accent. | Multiple acrylic design details. | Full acrylic window + internal acrylic bracing. |
| Acrylic viewing window | None | None | Standard viewing window (design-dependent). | Large viewing window showing subs & internals. |
| LED lighting | None | Optional add-on (front lighting). | Standard internal / perimeter lighting. | Standard RGB lighting with under-seat glow. |
| Underglow / floor glow | None | None | Optional underglow (when requested). | Standard – part of the build look. |
| Finish & upholstery | Premium carpet or vinyl in OEM-matched style. | Upgraded vinyl & accent details. | Multi-texture, stitched and layered show-style finish. | Highest level finish: layered vinyl, acrylic, and color-matched details. |
| Pre-wired & terminal cup | Pre-wired, subs mounted, CB Customs plug-and-play cup. | Pre-wired, subs mounted, CB Customs plug-and-play cup. | Pre-wired, subs mounted, CB Customs plug-and-play cup. | Pre-wired, subs mounted, CB Customs plug-and-play cup & final bench test. |
| Best for | Daily drivers who want clean, hidden bass. | OEM-plus guys who want a touch of custom. | Show-ready daily drivers and high-end builds. | Full flex, SEMA-style builds and customers who want the absolute top tier. |
Overall look
Stage 1
Clean OEM-plus enclosure, no acrylic, no lighting.
Stage 2
OEM-plus with a single acrylic accent panel.
Stage 3
Full custom acrylic face & design details.
Stage 5
Full show-truck treatment with acrylic window, RGB lighting & premium cosmetics.
Acrylic & windows
Stage 1
No acrylic.
Stage 2
Standard front acrylic accent.
Stage 3
Acrylic details + window (design-dependent).
Stage 5
Large viewing window + internal acrylic bracing.
Lighting
Stage 1
No lighting.
Stage 2
Optional add-on (front lighting).
Stage 3
Standard internal / perimeter lighting. Underglow optional.
Stage 5
Standard RGB lighting with under-seat glow.
Finish
Stage 1
Premium carpet or vinyl in OEM-matched style.
Stage 2
Upgraded vinyl & accent details.
Stage 3
Multi-texture, stitched and layered show-style finish.
Stage 5
Highest level finish: layered vinyl, acrylic, and color-matched details.
Pre-wired & install
Stage 1
Pre-wired & plug-and-play cup.
Stage 2
Pre-wired & plug-and-play cup.
Stage 3
Pre-wired, subs mounted, quick drop-in.
Stage 5
Pre-wired, bench-tested & ready to flex.
Best for
Stage 1
Clean daily driver, hidden bass.
Stage 2
OEM-plus with a touch of custom.
Stage 3
Show-ready daily build.
Stage 5
Full platinum, SEMA-level flex.
Quick rule of thumb: Stage 1 = clean. Stage 2 = clean + accent. Stage 3 = full custom show piece.
Stage 5 = platinum, no-compromise flex piece.
Questions?
Still not sure which stage or setup to go with?
Shoot us a text or call at (682) 516-3358, email cbcustoms.tx@gmail.com, or reach out below with your truck year and goals.