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Ground Shaker  GS-NP215B New

Black 15" Dual Ported Center Sub Box

Item #99332

Condition:   Brand New

Product Highlights

  • Black
  • 15"
  • Dual Ported
  • Center Sub Box

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

$295.00

Reg. Price $345.00  Save $50.00
  Free 2-Years Warranty Included!

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Ground Shaker GS-NP215B Black 15" Dual Ported Center Sub Box

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?
  • • 15" Black Dual Ported Center Sub Box
  • • Owner's Manual
Ground Shaker
Built for Maximum SPL Impact and Deep Street Bass

Dialed in at a deep 33Hz tuning, this enclosure is built to deliver aggressive low-end punch that brings serious energy to both daily driving and competition-style systems. Its oversized internal chamber gives your subwoofers the space they need to move air freely, producing louder, deeper, and more commanding bass output. A dual-slot port design enhances airflow efficiency while reducing unwanted noise, resulting in stronger pressure, cleaner response, and a truly hard-hitting sound experience built for the street.

Built for Deep, Controlled Bass Performance

Engineered for serious audio performance, this enclosure is constructed from thick, high-grade MDF to deliver outstanding strength, stability, and resistance against heavy bass pressure. Its dual-port airflow system is designed to spread low frequencies evenly throughout the cabin, creating a smoother, more powerful listening experience with stronger impact. With wide subwoofer compatibility and generous mounting depth support, it’s built to handle a variety of performance setups trusted by U.S. bass enthusiasts and competition builders alike.

 

Ground Shaker
Ground Shaker
Clean OEM Look with Serious High-Output Performance

Built on a wide 41-inch platform, this enclosure is designed for bass lovers who want powerful, room-filling output that dominates the entire vehicle. Its clean, trunk-ready carpet finish gives it a refined factory-style appearance while protecting against daily wear, vibration, and scratches. Inside, the airtight sealed construction is engineered for maximum efficiency, keeping bass tight, controlled, and free from air loss. Dual spring-loaded terminals make wiring simple and reliable, delivering a clean, stable connection for demanding multi-subwoofer audio setups.


SPECIFICATIONS


  • Speaker Size : 15 Inches
  • Number Of Subwoofers : 2
  • Construction : 3/4 MDF
  • Volume : 4.60 Cu. Ft.
  • Enclosure Type : Ported

FEATURES


Features:

  • Explosive 33Hz Deep Bass Tuning Performance: Tuned at 33Hz, this enclosure delivers hard-hitting low-end bass designed for powerful street SPL systems and daily driving impact.
  • High-Capacity 4.60 Cu Ft Air Volume Design: Engineered with massive internal airspace, allowing your subwoofers to move more air for louder, deeper, and more aggressive bass output.
  • Dual Slot Port High-Flow System: Equipped with two precision-tuned slot ports that maximize airflow efficiency, reduce port noise, and significantly increase bass output pressure.
  • Heavy-Duty MDF Construction Strength: Built from premium 3/4” high-quality MDF wood for maximum durability, vibration resistance, and long-term structural stability under extreme bass loads.
  • Competition-Grade Dual Port Efficiency: The dual-port design enhances bass distribution, delivering smoother response and stronger low-frequency impact across the entire cabin.
  • Optimized Mounting Depth Compatibility: Supports up to 15 1/2” mounting depth, making it compatible with a wide range of performance subwoofers used in American audio builds.
  • Wide-Body High Output Design: With a 41” length enclosure footprint, this box is built for serious bass enthusiasts who demand loud, room-filling performance.
  • Professional Trunk-Ready Carpet Finish: Wrapped in durable trunk liner carpet that provides a clean OEM-style look while protecting against scratches, wear, and vibration damage.
  • Airtight Sealed Premium Construction: Fully sealed using high-quality Titebond silicone and wood glue to ensure zero air leaks and maximum bass efficiency.
  • Dual Spring-Loaded Terminal System: Equipped with two spring-loaded terminals for easy wiring, stable connections, and clean installation for multi-subwoofer setups.

 

Specifications:

  • Cutout Diameter: 13 3/4”
  • Air Volume: 4.60 ft³
  • Tuning Frequency: 33 Hz
  • Port Type: 2 Slot Ports
  • Port Dimensions: H-14 1/2” x W-2 3/8” x L-32”
  • Mounting Depth: 15 1/2”
  • Height: 16 1/4”
  • Length: 41”
  • Depth: 20”
  • Material: 3/4” High-Quality MDF Wood
  • Finish: Durable Trunk Liner Carpet
  • Sealant: High-Quality Titebond Silicone
  • Adhesive: High-Quality Titebond Wood Glue
  • Terminals: 2 Spring Loaded Terminals
  • UPC:
  • Weight: 85
  • 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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