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Ground Shaker  GS-LGM18B

Black 8" Single Sealed Enclosure for 2019-2026 GMC Sierra Double & Crew Cab (under rear seat)

Item #99028

Condition:   Brand New

Product Highlights

  • 8" Single Sealed Enclosure
  • Black Finish
  • 2019–2026 GMC Sierra
  • Double & Crew-Cab
  • Under Rear Seat Install

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

$255.00

Reg. Price $335.00  Save $80.00
  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 GS-LGM18B Black 8" Single Sealed Enclosure for 2019-2026 GMC Sierra Double & Crew Cab (under rear seat)

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" Single Sealed Enclosure
  • • Owner's Manual
Alpine_PWE-S8
Under-Seat Down-Firing Subwoofer Enclosure

 

Crafted from 5/8" high-quality MDF, this enclosure delivers strong, rigid performance for clean, distortion-free bass. Wrapped in durable trunk-liner carpet, it protects the box while offering a sleek, factory-style look. An airtight Titebond silicone seal maintains precise internal air pressure for accurate low-frequency response, and premium wood glue assembly ensures long-lasting structural integrity. Featuring 1 binding post terminal, it provides a secure connection for a single subwoofer. Designed for under-seat installation, the down-firing configuration projects bass downward for optimal in-cabin sound.

 


SPECIFICATIONS


  • Speaker Size : 8 Inches
  • Number Of Subwoofers : 1
  • Construction : 5/8 MDF
  • Volume : 0.90 Cu. Ft.
  • Enclosure Type : Sealed
  • Vehicle Make : GMC

FEATURES


Features:

  • 5/8" High-Quality MDF Wood: Strong and rigid for clean, distortion-free bass.
  • Durable Trunk-Liner Carpet Finish: Provides protection and a sleek, factory-style appearance.
  • Airtight Titebond Silicone Seal: Ensures accurate low-frequency response.
  • Premium Wood Glue Assembly: Built for long-lasting structural integrity.
  • 1 Binding Post Terminal: Secure connection for a single subwoofer.
  • Under-Seat Fitment: Designed to fit neatly under the rear seat.
  • Down-Firing Design: Projects bass downward for optimal in-cabin sound.

 

Specifications:

  • Cutout Diameter: 7 1/8"
  • Air Volume: 0.90 ft³
  • Weight: 26 lbs
  • Mounting Depth: 6 1/2"
  • Front Height: 9 1/2”
  • Rear Height: 6 1/2"
  • Length: 25 1/2"
  • Top Depth: 17"
  • Bottom Depth: 15”
  • UPC:
  • Weight: 26
  • 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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