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Loaded Subwoofer Boxes Designed for Maximum Performance

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Curated picks matched to common build goals

Best Loaded Value

Proline - X Sealed 10" Enclosure – Loaded with Prodigy Audio NB3 - Proline X Subwoofer Enclosures for car audio systems

Proline X

Proline-X Sealed 10" Enclosure – Loaded with Prodigy Audio NB3

Sealed 10 inch loaded with the Prodigy NB3. Strong motor, clean sealed alignment, the right entry point for a complete loaded system.

$ 299.99 $ 329.99

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Best Loaded for SQ

Image Dynamics IDMAX 12 Loaded Subwoofer Enclosure (Sealed)

Proline X

Proline-X Sealed 12" Enclosure – Loaded with Image Dynamics IDMAX 12

Sealed Professional Series 12 inch loaded with the Image Dynamics IDMAX 12. SQL-grade construction with the IDMAX as the reference SQ driver.

$ 799.99

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Best Loaded for Trucks

Proline - X Micro Series M10 - S WAV Loaded Wavtech thinPRO 10 Subwoofer + Sealed Enclosure - Proline X Enclosed Subwoofer for car audio systems

Proline X

Proline X Single 10" Sealed Micro Series System | Loaded with Wavtech thinPRO 10

Compact sealed system loaded with the Wavtech thinPRO 10. 750W RMS in 2.9 inch mounting depth, purpose-built for behind-seat installs.

$ 849.99 $ 949.99

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Best Loaded Vehicle Specific

2024 - 2025 Ford F - 150 & F - 250 Direct Fit Ford Series Loaded Subwoofer Enclosure – Kicker CompRT 10

Proline X

2024-2026 Ford F-150 Behind-Seat Single 10" Enclosure – Loaded with Kicker CompRT 10

2024-2025 Ford F-150/F-250 behind-seat 10 inch system loaded with the Kicker CompRT. No enclosure design work, no fitment guesswork.

$ 699.99

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Tuning Frequency Varies by Bundle
Material Premium Construction
Power Rating Plug & Play
Ideal For Complete Solution

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Built Different. Built Better.

Every Proline X enclosure is manufactured in our Tullahoma, Tennessee facility using materials and construction methods that most enclosure brands don't touch.

Langboard Elite MDF

Langboard Elite MDF

48.5 lb/ft³ density and 200 psi internal bond strength, the highest-grade MDF available for enclosure construction.

1-Year Warranty

1-Year Warranty

Full coverage on materials and construction defects. We stand behind every enclosure we build.

Driver-Matched Tuning

Driver-Matched Tuning

Internal volume, port tuning, and cabinet dimensions are spec'd to each driver diameter, not a universal fit applied across sizes.

Made in Tullahoma, TN

Made in Tullahoma, TN

CNC-manufactured in our Tennessee facility on ShopSabre routers. Not imported. Not outsourced.

Shop By Series

Economy Series
Economy Series
Value Driven - Standard Output
Performance Series
Performance Series
High Output - Universal Ported & Sealed
Performance Optimized Series
Performance Optimized Series
Precision Tuned - Brand Specific Geometry
Performance Wedge Series
Performance Wedge Series
Angled Back - Truck & Hatchback Ready
Professional Series
Professional Series
Competition Grade - Double Baffle High SPL
Micro Series
Micro Series
Compact Sealed - Small Footprint Efficiency
Down Fire Series
Down Fire Series
Under Seat - Cargo Safe Down-Firing
Vehicle Specific Series
Vehicle Specific Series
OEM Fitment - Stealth Truck & SUV Solutions
Loaded Series
Loaded Series
Plug & Play - Subwoofer + Box Bundles