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Kicker  Single 8" Sealed CompRT Subwoofer Bass Package for 2007-2018 Chevy Silverado Extended Cab New

GS-JCHV18B Black 8" Single Sealed Sub Box, Fits 2007-2018 Chevy Silverado Extended Cab + 48CWRT84 CompRT Series 8" 600W Peak Power Handling 4 Ohms, Dual Voice Coil Shallow Mount Component Car Subwoofer

Item #99449

Condition:   Brand New

Product Highlights

  • GS-JCHV18B
  • Black 8" Single Sealed Sub Box
  • Fits 2007-2018 Chevy Silverado Extended Cab
  • 48CWRT84 CompRT Series 8"
  • 600W Peak Power Handling
  • 4 Ohms
  • Dual Voice Coil Shallow Mount Component Car Subwoofer

  Free 2-Years Warranty Included!
60 DAYS Returns Accepted.
FREE Lifetime Tech Support.
FREE Shipping.
60 DAYS Price change protection.

$404.96

Reg. Price $659.99  Save $255.03
Add Extended Warranty
  Free 2-Years Warranty Included!
60 DAYS Returns Accepted.
FREE Lifetime Tech Support.
FREE Shipping.
60 DAYS Price change protection.

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Onlinecarstereo Exclusive Bundle

This exclusive package is brought to you by Onlinecarstereo. We have put together this bundle to kickstart your vehicle to the path of excellent car audio.

Ground Shaker GS-JCHV18B Black 8" Single Sealed Sub Box, Fits 2007-2018 Chevy Silverado Extended Cab + Kicker 48CWRT84 CompRT Series 8" 600W Peak Power Handling 4 Ohms, Dual Voice Coil Shallow Mount Component Car Subwoofer


Authorized Dealer Stamp

We are an 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?
  • • GS-JCHV18B 8" Single Sealed Sub Box
  • • GS-JCHV18B Owner's Manual
  • • 48CWRT84 8" CompRT Series Dual Voice Coil Component Car Subwoofer
  • • 48CWRT84 Kicker logo sticker
  • • 48CWRT84 (4) Adhesive backed screw covers
  • • 48CWRT84 Screw cover installation instructions
  • • 48CWRT84 Template on box
  • 48CWRT84 Owner's Manual
Kicker_KM
Big Bass Without Giving Up Your Space

The Ground Shaker GS-JCHV18B is the perfect solution for truck owners who want serious bass without sacrificing valuable cabin space. Designed to fit neatly under the rear seat behind the driver’s side, this enclosure keeps your setup clean, hidden, and practical while still delivering the low-end punch your system deserves. Its down-firing design not only protects the subwoofer from daily wear and tear, but also helps produce deeper, tighter bass that fills the cabin with smooth low-frequency response.

Built Tough for Real Car Audio Performance

This enclosure is built from durable 5/8" high-quality MDF wood, giving it the strength and rigidity needed for cleaner, more accurate bass performance. With 0.68 ft³ of optimized air space, it’s tuned to help your subwoofer perform efficiently without sounding muddy or weak. The enclosure supports subs with a 7 1/8" cutout and up to 6" mounting depth, making it compatible with a wide range of popular subwoofers. Ground Shaker also uses premium Titebond wood glue and silicone sealing to keep the box air-tight and solid, even during heavy bass sessions.

 

Kicker_KM
Kicker_KM
Compact Power – Perfect Fit Sub Box

Wrapped in a durable trunk liner carpet, the GS-JCHV18B looks right at home inside your truck while resisting scratches and wear from everyday use. The compact dimensions make installation simple, and the sturdy 22 lb build helps reduce unwanted vibrations for cleaner sound. A reliable binding post terminal provides secure wiring connections, making your install easier and more dependable. If you want strong bass in a stealthy, truck-friendly setup, this enclosure gets the job done without taking over your interior.

 

 

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Slim, Powerful, and Built for Any Environment

Experience big bass from a slim, all-weather design engineered for tight spaces and tough conditions. Dual 4-Ohm voice coils provide flexible wiring options for easy amplifier matching and optimized system performance.

Engineered for Strength and Precision

Built to perform anywhere, the UV-resistant cone and surround deliver lasting durability in any environment. SoloKon cone technology fuses the cone to the vented back brace, creating a rigid, distortion-free structure that enhances cooling and ensures clean, accurate bass.

Kicker_KMTC&KMFC
Kicker_KMTC&KMFC
Built Tough for Long-Lasting Performance

Red double stitching reinforces the connection between the Santoprene surround and polypropylene cone for superior durability, while the forced-air cooling system keeps the subwoofer up to 20% cooler—ensuring reliable, long-lasting performance even under heavy loads.


SPECIFICATIONS


  • Vehicle Make : Chevrolet
  • Vehicle Model : Silverado

FEATURES


GS-JCHV18B Black 8" Single Sealed Sub Box, Fits 2007-2018 Chevy Silverado Extended Cab

 

Features:

  • Vehicle-Specific Under Seat Design: Engineered to fit under the rear seat behind the driver’s side for a clean, space-saving bass solution.
  • Down-Firing Enclosure Configuration: Down-firing design helps protect the subwoofer while enhancing low-frequency performance and bass response.
  • Optimized Internal Air Volume: Features 0.68 ft³ of internal air space for balanced and efficient subwoofer performance.
  • Subwoofer Compatibility: Supports subwoofers with a 7 1/8" cutout diameter and up to 6" mounting depth.
  • Compact Truck-Friendly Dimensions: Designed with a low-profile structure measuring 9 1/2" front height, 7 1/2" rear height, 29 1/2" length, and 13 1/2" depth.
  • Heavy-Duty MDF Construction: Built from durable 5/8" high-quality MDF wood for enhanced enclosure rigidity and improved sound performance.
  • Premium Trunk Liner Finish: Wrapped in a durable carpeted trunk liner material for a clean appearance and added resistance to wear.
  • Air-Tight Sealed Design: Sealed with high-quality Titebond silicone to reduce air leaks and maintain accurate bass response.
  • Strong Wood Bonding: Constructed using premium Titebond wood glue for superior durability and long-lasting structural integrity.
  • Reliable Speaker Connection: Equipped with a binding post terminal for secure and dependable speaker wire connections.
  • Solid & Durable Build: Weighs 22 lbs., providing a sturdy enclosure platform that minimizes unwanted vibration.
  • Installation Note: Not compatible with 2007 Classic models.

 

Specifications:

  • Cutout Diameter: 7 1/8"
  • Air Volume: 0.68 ft³
  • Weight: 22 lbs.
  • Mounting Depth: 6"
  • Front Height: 9 1/2"
  • Rear Height: 7 1/2"
  • Length: 29 1/2"
  • Depth: 13 1/2"
  • Constructed with 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
  • 1 Binding Post Terminal
  • Fits under rear seat behind the driver’s side
  • Down-firing design
  • Will not fit 2007 Classic

 

 

48CWRT84 CompRT Series 8" 600W Peak Power Handling 4 Ohms, Dual Voice Coil Shallow Mount Component Car Subwoofer

 

Features:

  • All-Weather Thin Design: Slim, versatile profile built to deliver powerful bass in tight spaces or extreme environments.
  • Dual 4-Ohm Voice Coils: Enables flexible wiring options for seamless amplifier matching.
  • UV-Resistant Cone and Surround: Ensures consistent performance and durability in any condition.
  • SoloKon Cone Technology: Fuses the cone to the vented back brace, forming a rigid, distortion-free structure that enhances cooling.
  • Red Double Stitching: Creates a strong, lasting bond between the Santoprene surround and polypropylene cone for improved reliability.
  • Forced-Air Cooling System: Keeps the sub running up to 20% cooler, extending longevity under heavy load.
  • Advanced Suspension & Heat Management: Maintains deep, controlled bass output during extended play.
  • Sealed or Vented Box Compatibility: Optimized for sealed enclosures, but capable of powerful output in vented setups.

 

Specifications:

  • Size: 8" (20 cm)
  • Impedance: 4 Ohm (Dual Voice Coil)
  • Recommended Amplifier Power (RMS): 300 watts
  • Peak Power (ANSI/CTA-2031-A): 600 watts
  • Sensitivity (1w/1m): 81.8 dB
  • Mounting Depth: 2-11/16" (6.7 cm)
  • Mounting Diameter: 7" (17.7 cm)
  • Minimum Sealed Box Volume: 0.2 cu. ft (5.66 L)
  • Maximum Sealed Box Volume: 1.0 cu. ft (28.32 L)
  • Minimum Vented Box Volume: 0.8 cu. ft (22.7 L)
  • Maximum Vented Box Volume: 1.2 cu. ft (34 L)
  • UPC:
  • Weight: 30
  • 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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