The Pioneer TS-W3004D4 is a 12-inch Champion Series car audio subwoofer designed for high-output bass. It features dual 4-ohm voice coils and 2400W peak power as specified by the manufacturer.

The subwoofer is intended for installation in sealed or ported enclosures and offers wiring flexibility for different amplifier configurations. Proper amplifier matching, enclosure selection, and mounting depth verification are required for correct fitment and performance.