Bring thunderous low-end power to your system with the DOWN4SOUND SB-15 D4 15” Subwoofer, engineered for car audio enthusiasts who want deep, precise bass with uncompromising clarity. With 500W RMS power handling and a dual 4-ohm voice coil configuration, this subwoofer delivers flexible wiring options and dependable performance for a variety of amplifier setups.

Built with a 2.5-inch coil, robust motor structure, and a precision-engineered suspension system, the SB-15 D4 is designed to reproduce bass with impact, accuracy, and control. Despite its large size, it maintains tight sound reproduction, making it an excellent choice for high-performance builds that demand both power and precision.

With a durable construction and optimized design, the SB-15 D4 is the perfect balance of value and performance for anyone looking to take their car audio system to the next level.

Key Features & Benefits:

• 500W RMS Power Handling – Strong, consistent bass output.

• Dual 4-Ohm Voice Coil – Flexible wiring options for amplifier matching.

• Large 15” Subwoofer – Produces deep, room-filling bass with authority.

• Rugged Build Quality – Engineered for long-lasting durability.

• Optimized Suspension System – Ensures accurate, clean low-frequency reproduction.

• Recommended Ported Enclosure – 3.0 cu ft tuned to 35 Hz for maximum performance.

Transform your system with the DOWN4SOUND SB-15 D4 — delivering deep, controlled bass and long-lasting reliability for the ultimate car audio upgrade.