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.
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Upgrade your truck audio system with the Ground Shaker GS-TOYTC18B under-seat subwoofer enclosure, engineered for tight-fit installations without sacrificing bass performance. Built from durable 5/8" high-quality MDF wood, this enclosure delivers a solid, vibration-resistant structure that enhances low-frequency response for deep, clean bass inside your cabin.
Designed for serious sound performance, the GS-TOYTC18B features a fully sealed construction reinforced with premium wood glue and Titebond silicone for an airtight fit. This ensures tighter bass response, improved accuracy, and long-lasting durability. The enclosure is finished with a durable trunk-liner carpet, giving it a clean, factory-style appearance that blends seamlessly into your vehicle interior.


Perfect for space-saving installations, this upward-firing under-seat subwoofer enclosure is designed to maximize bass projection directly into the cabin. It includes a spring-loaded terminal for secure and reliable wiring connection. Please note, installation may require minor trimming under the seat depending on subwoofer height, and it is not compatible with hybrid trucks or carpeted storage compartments.

Experience unmatched audio performance with a powerful 450W RMS output, delivering deep, clean bass that elevates any sound system. The space-saving shallow mount design allows for flexible installation in tight or custom-fit locations—perfect for trucks, boats, or compact vehicles. Built to last, the rugged die-cast aluminum basket not only enhances structural integrity but also helps dissipate heat for consistent, reliable performance even at high volumes.
Built for performance and reliability, this subwoofer features a high-strength foam surround for clean bass, a 2″ 4-layer voice coil for high power handling, and a FEA-optimized motor for efficient output. Tinsel woven leads on a Nomex spider enhance durability, while Dual 4-Ohm or Dual 2-Ohm impedance options offer flexible wiring setups.

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