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Ground Shaker  GS-GMP28B New

Black 8" Dual Ported Enclosure for 2014-2018, GMC Sierra Crew Cab

Item #99012

Condition:   Brand New

Product Highlights

  • Black 8"
  • Dual Ported
  • 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.

$290.00

Reg. Price $340.00  Save $50.00
  Free 2-Years Warranty Included!

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Ground Shaker GS-GMP28B Black 8" Dual Ported 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?
  • • 8" Black Dual Ported Enclosure
  • • Owner's Manual
Ground Shaker
Built Strong, Sounds Flawless

Upgrade your ride with an enclosure crafted from rugged 5/8" MDF and reinforced with premium adhesives, delivering long-lasting strength you can rely on. Precision sealing keeps your bass clean, tight, and distortion-free, even when you push the volume. With dual binding posts designed for quick and secure connections, installation is smooth and straightforward—so you can enjoy powerful, high-quality sound without the hassle.

Booming Ported Bass in a Space-Smart Design

Feel the difference with a slot-ported enclosure tuned to deliver deep, hard-hitting bass that fills your truck with powerful, moving air. Its slim, under-seat profile keeps your interior clean and uncluttered while packing serious low-end performance. Engineered for precision airflow, the single slot port maximizes efficiency to produce tight, impactful bass with every track you play.

 

Ground Shaker
Ground Shaker
Compact Strength, Deep Bass, Road-Ready Style

Take your audio to the next level with a smart down-firing design that boosts low-end impact while keeping your subwoofer protected from everyday hazards. Wrapped in rugged trunk liner carpet, this enclosure is built to handle scratches, spills, and life on the road while maintaining a clean, professional look. Precision-tuned internal volume and porting ensure smooth, consistent bass across every genre, while its compact yet solid build delivers powerful, hard-hitting sound without taking over your space.


SPECIFICATIONS


  • Speaker Size : 8 Inches
  • Number Of Subwoofers : 2
  • Construction : 5/8 MDF
  • Volume : 1.38 Cu. Ft.
  • Enclosure Type : Ported
  • Vehicle Make : GMC

FEATURES


Features:

  • Ported Bass Explosion: Slot port design tuned at 35 Hz delivers deep, booming bass that hits hard and moves air for a full listening experience.
  • Under-Seat Space Saver: Slim, low-profile design fits perfectly under your rear seat, keeping your truck interior clean and organized.
  • Precision Audio Engineering: Single slot port ensures optimized airflow for tight, distortion-free bass with every beat.
  • Heavy-Duty Build: Constructed with 5/8" high-quality MDF and reinforced with premium Titebond glue for durability that lasts.
  • Crystal-Clear Bass Clarity: Sealed with high-quality Titebond silicone for clean, professional-grade sound even at high volumes.
  • Dual-Terminal Convenience: Two binding posts allow for easy, secure wiring for a hassle-free installation.
  • Down-Firing Bass Advantage: Optimized orientation enhances low-frequency impact while protecting your subwoofer from damage.
  • Rugged, Truck-Ready Finish: Durable trunk liner carpet resists scratches, spills, and daily wear for a polished look.
  • Consistent Performance Across Genres: Carefully engineered internal volume and port tuning deliver even bass for all types of music.
  • Compact Powerhouse: Weighs 44 lbs but packs a heavy-hitting sound that transforms your music experience without taking extra space.

 

Specifications:

  • Cutout Diameter: 7 1/8"
  • Air Volume: 1.38 ft³
  • Tuning Frequency: 35 Hz
  • 1 Slot Port (H-2” W-4” L-10”)
  • Mounting Depth: 6 1/2"
  • Height: 8"
  • Length: 49 1/2"
  • Depth: 16"
  • 5/8" High-Quality 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 Rear Seat
  • Down-Firing
  • UPC:
  • Weight: 44
  • 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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