QPower QLuxe Quad 8" Subwoofer Box Silverado Sierra Crew Cab 2007-2026

QPower QLuxe QLGMCFF07408
Key Features:

• Product Type: Vehicle-Specific Empty Subwoofer Enclosure
• Subwoofer Size: 8 in
• Subwoofer Capacity: 4 × 8" subwoofers
• Enclosure Type: Ported / Vented
• Installation Location: Under rear seat
• Vehicle Cab Type: Crew Cab
• Color: Black
• Subwoofers Included: No – empty enclosure only

Construction

• Vehicle-specific enclosure shaped for under-seat installation
• Quad 8-inch woofer configuration
• Ported enclosure design
• Built as a space-saving bass solution for compatible Chevrolet Silverado and GMC Sierra Crew Cab trucks
• Finished exterior suitable for automotive interior installation.

Features

• Holds four 8-inch subwoofers
• Ported design for increased bass output and efficiency
• Uses otherwise unused space beneath the rear seat
• Vehicle-specific fit rather than a generic rectangular enclosure
• Allows installation of four smaller woofers while preserving passenger-cabin space
• Ready for compatible aftermarket 8-inch subwoofers; woofers are purchased separately.

Dimensions

Current distributor data for QLGMCFF07408 lists:

• Overall / Shipping Dimensions: approximately 52" × 12" × 16"
• Listed Weight: approximately 38 lb

These dimensions and weight appear in distributor logistics data. I would not label 52" × 12" × 16" as confirmed bare-product dimensions unless the enclosure is physically measured, because QPower's own detailed dimensional drawing for this newly listed SKU was not available in the sources I could verify.

Likewise, I could not verify reliable manufacturer-published values for:

• Individual woofer cutout diameter
• Maximum mounting depth
• Net airspace per chamber
• Port tuning frequency

Those should not be guessed, especially when selecting subwoofers.

Performance

• Configuration: Quad 8"
• Loading: Ported/vented
• Designed to provide increased low-frequency output from four compact 8-inch drivers
• Actual RMS/peak power capability depends entirely on the installed subwoofers
• Final frequency response and output depend on the selected woofers, amplifier, vehicle cabin and installation.

Because this is an empty enclosure, it does not have an inherent wattage rating that should be advertised as speaker power.

Applications

Advertised for:

• Chevrolet Silverado Crew Cab – 2007–2026
• GMC Sierra Crew Cab – 2007–2026

The listing is specifically for Crew Cab applications. Fitment should not automatically be extended to Regular Cab or Double/Extended Cab trucks.

Included

• 1 × QPower QLuxe QLGMCFF07408 Quad 8" Ported Subwoofer Enclosure

Not included:

• 8" subwoofers
• Amplifier
• Speaker wiring
• Installation electronics