F150-SC-28-V-09

The Fox Acoustics F150-SC-28-V-09 is a premium under-seat vented subwoofer enclosure built specifically for 2009+ Ford F-150 SuperCrew trucks and select 2017+ Ford Super Duty Crew Cab models. Designed around dual 8-inch subwoofers, this enclosure is known for producing surprisingly deep and aggressive bass output while still maintaining rear-seat usability and factory-style fitment.

Unlike many shallow prefab truck boxes, the F150-SC-28-V-09 provides a large 2.2 cubic feet of shared internal airspace and a 35Hz tuned vented design, helping smaller 8-inch subwoofers perform much louder and lower than expected.

Key Features

• Dual 8-inch vented under-seat enclosure
• Fits 2009+ Ford F-150 SuperCrew
• Fits select 2017+ Super Duty Crew Cab trucks
• 2.2 cubic feet internal airspace
• 35Hz port tuning
• Shared/non-divided chamber
• Spray bedliner-coated finish
• Heavy-duty MDF construction
• OEM-style under-seat fitment
• Does not interfere with factory power inverter
• Designed for high-output truck bass systems

Subwoofer Compatibility

• Fits most standard-frame 8" subwoofers
• Maximum mounting depth:
  • 6.75"
• Maximum magnet diameter:
  • 6.5"
• Mounting hole size:
  • 7.25"

Fox notes that some larger-frame 8-inch subs may require sanding or trimming for proper fitment.

Best Applications

• Daily-driver bass builds
• SQL truck systems
• Under-seat stealth installs
• Sundown Audio 8" systems
• High-output compact systems
• Customers wanting deeper bass than sealed truck boxes

Performance Notes
This enclosure is especially popular because the vented design allows dual 8s to perform closer to larger subwoofer systems while still fitting cleanly under the rear seat. Many users report significantly stronger low-end extension compared to traditional sealed truck boxes