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Ground Shaker  GS-GM212B

Black 12" Dual Sealed Enclosure for 2014-2018, GMC Sierra Crew Cab

Item #99009

Condition:   Brand New

Product Highlights

  • Black 12"
  • Dual Sealed
  • Enclosure
  • 2014-2018
  • GMC Sierra Crew Cab

  Free 2-Years Warranty Included!
60 DAYS Returns Accepted.
FREE Lifetime Tech Support.
FREE Shipping (No Minimum).
60 DAYS Price change protection.

$325.00

Reg. Price $340.00  Save $15.00
  Free 2-Years Warranty Included!
60 DAYS Returns Accepted.
FREE Lifetime Tech Support.
FREE Shipping (No Minimum).
60 DAYS Price change protection.

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Ground Shaker Authorized Dealer

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Ground Shaker GS-GM212B Black 12" Dual Sealed Enclosure for 2014-2018, GMC Sierra Crew Cab

We are an Ground Shaker authorized dealer so you get up-to-date, fully warrantied products. Shipping is free to the lower 48 states on everything you order!

What's Inside?
  • • 12" Black Dual Sealed Enclosure
  • • Owner's Manual
Ground Shaker
Compact Power, Massive Bass, Built to Last

Unleash deep, punchy bass with dual-chamber precision engineering that gives each subwoofer its own optimized space for clean, powerful lows. Its slim under-seat design delivers maximum impact without sacrificing cabin space, turning your truck into a mobile sound system. Crafted from 5/8" high-density MDF and reinforced with premium Titebond glue, this enclosure stands up to the toughest American roads. Fully sealed with high-quality Titebond silicone, it ensures distortion-free, crystal-clear bass that brings every track to life.

Effortless Setup, Deep Bass, Built for the Road

Experience powerful, low-frequency impact with a down-firing design that enhances bass while keeping your subwoofers protected. Dual binding posts make installation fast, secure, and hassle-free, so you can upgrade your system in minutes. Wrapped in durable trunk liner carpet, this enclosure stands up to scratches, spills, and everyday wear, combining rugged road-ready durability with a clean, professional look.

 

Ground Shaker
Ground Shaker
Compact Design, Big Sound, Versatile Performance

Enjoy consistent, balanced bass across every music genre thanks to precision-tuned internal airspace. Designed to accommodate most standard subwoofers, it delivers heavy-hitting performance while keeping installation simple and secure. At just 42 lbs, this compact powerhouse packs massive sound without taking over your truck’s interior, giving you full audio impact in a space-smart design.


SPECIFICATIONS


  • Speaker Size : 12 Inches
  • Number Of Subwoofers : 2
  • Construction : 5/8 MDF
  • Volume : 1.45 Cu. Ft.
  • Enclosure Type : Sealed
  • Vehicle Make : GMC

FEATURES


Features:

  • Epic Dual-Chamber Bass: Each subwoofer has its own 0.73 ft³ chamber for deep, powerful bass that hits clean and hard.
  • Under-Seat Powerhouse: Slim design fits neatly under your rear seat, giving maximum bass without taking up cabin space.
  • Built Tough for American Roads: Made from 5/8" high-density MDF and reinforced with premium Titebond glue for long-lasting durability.
  • Precision Sealed for Clarity: High-quality Titebond silicone seals ensure distortion-free, crystal-clear low-end response.
  • Dual-Terminal Convenience: Two binding posts make wiring easy and secure for quick installation.
  • Down-Firing Bass Boost: Optimized orientation enhances low-frequency impact while protecting your subwoofers.
  • Rugged Truck-Ready Finish: Durable trunk liner carpet resists scratches, spills, and daily wear while looking professional.
  • Balanced Audio for Every Genre: Carefully tuned airspace provides consistent bass across all types of music.
  • Subwoofer-Friendly Design: Supports most standard subs, but note that wide magnet or basket models may not fit.
  • Compact Yet Heavy-Hitting: Weighing only 42 lbs, it delivers massive sound without overwhelming your vehicle space.

 

Specifications:

  • Cutout Diameter: 11 1/8"
  • Air Volume: 1.45 cubic ft³
  • 2 Individual Chambers (0.73 cubic ft³ per subwoofer)
  • Mounting Depth: 6 1/2"
  • Height: 8"
  • Length: 49 1/2"
  • Depth: 16"
  • 5/8" High-Density MDF Wood
  • Carpeted with Durable Trunk Liner Finish
  • Sealed with High-Quality Titebond Silicone
  • Glued with High-Quality Titebond Wood Glue
  • 2 Binding Post Terminals
  • Fits Under the Rear Seat
  • Down-Firing
  • Subwoofers with Wide Magnets/Baskets May Not Fit
  • UPC:
  • Weight: 42
  • Authorized Internet Dealer
Warranty: 2 Year(s) Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for replacement within 2 Year(s) from the original date of purchase with proper return authorization.

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