W8 K9 Series 8" Underseat Subs 2-Pack + dB14 Amplifier Bundle
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Rockville
W8 K9 Series 8" Underseat Subs 2-Pack + dB14 Amplifier Bundle
W8 K9 Series 8" Underseat Subs 2-Pack + dB14 Amplifier Bundle
Dual 8" Subs, 1000W RMS Amp, F‑150 Super Crew Ported Box, 4 AWG Kit
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Regular price
$579.80
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$579.80
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Features
- Two 8" K9 subs deliver compact, forceful bass
- dB14 mono amp with adjustable filters and EQ
- Bedliner‑finished F‑150 Super Crew ported box
- 4 AWG copper kit ensures stable power delivery
- Includes 14 AWG wire and install hardware
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What's Included in the box
- (2) W8K9D2 8" dual 2‑ohm subwoofers
- REC111 dual 8 ported underseat F‑150 box
- dB14 mono amplifier with bass remote
- RWK41 4 AWG amp wiring kit
- Install screws, 14 AWG wire, spade terminals
SKU: SKU: (2) W8K9D2+REC111+K2+dB14+RWK41
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Product Description
This underseat solution blends subtle integration with spirited low‑frequency presence for Ford Super Crew cabins. The ported, bedliner‑coated enclosure and K9 8" drivers produce agile, satisfying bass, while the dB14 keeps output composed and powerful. Copper 4 AWG wiring and hardware complete a reliable, refined installation.
This Bundle Includes

W8K9D2
The Rockville W8K9D2 8" subwoofer delivers deep, powerful bass with 500W RMS and advanced cooling. Its ultra-stiff cone, double-stacked magnet, and cast aluminum basket offer durability and style, making it ideal for custom setups or upgrades that demand premium sound and a sophisticated look in any vehicle.
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dB14
The Rockville dB14 mono amplifier delivers 1000W Dyno Certified RMS and 4000W peak power, offering powerful, clear sound for any car audio setup. With advanced tuning features and premium components, it’s designed for enthusiasts who demand both performance and reliability, making it a standout choice for custom and daily systems.
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REC111
The REC111 under seat front fire subwoofer enclosure offers deep, powerful bass in a compact design. With 0.8 cubic feet per sub and a durable bed liner finish, it fits seamlessly under your seat, providing a refined look and robust sound for car audio enthusiasts who value both performance and aesthetics.
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RWK41
The Rockville RWK41 4 AWG amp kit delivers exceptional power and signal transfer with 100% copper RCA cables and true-gauge wiring. Its flexible, abrasion-resistant jacket and gold-plated fuse ensure reliable, high-quality performance, making it the perfect choice for car audio upgrades and custom installations demanding premium sound and durability.
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K2
The K2 Dual Subwoofer Enclosure Installation Kit includes premium 14 AWG wire, 20 wood screws, and 4 spade terminals for flawless installation. Designed for car, home, or studio use, each component is expertly selected to deliver secure mounting and pure audio, elevating your sound system’s performance and style.
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Features
OEM-Plus Integration
Vehicle‑specific ported cabinet fits cleanly under seats while adding vibrant bass energy.
Controlled Power Delivery
Tunable subsonic, low‑pass, phase, and EQ adapt the response to your truck’s acoustics.
Durable, Low-Resonance Finish
Bedliner coating withstands daily use and helps minimize unwanted resonance.
High-Conductivity Wiring
4 AWG copper maintains voltage and dynamics for consistent impact.
Complete Install Package
Includes premium 14 AWG cable and fasteners for secure connections.

Technical Specifications
- Type of Product Dual 8" Car Subwoofer + Amplifier + Vehicle-Specific Ported Enclosure
- Vehicle Fit 2009–Up Ford F‑150 Super Crew (also F‑250/350 SD ’17‑Up)
- Amplifier Power (Dyno, 2Ω) 1000 W RMS (dB14)
- Enclosure Volume 0.8 cu.ft per sub (ported, ~35 Hz)
- Wiring Kit 4 AWG OFC RCA, 60 A AGU fuse
- Weight Each sub approx. 18.74 lb; Amp varies
- Dimensions Vehicle‑specific underseat fitment