The Phoenix Gold Z12D4 is a high-output 12-inch passive subwoofer rated at 800W RMS and 1600W maximum power. It is designed to deliver powerful low-frequency output for car audio systems.

The subwoofer features a dual 4-ohm voice coil for wiring flexibility, a non-pressed paper cone with stitched foam surround, a 2.5-inch high-temperature voice coil, a vented motor structure and a stamped steel basket with vented backplate. Mounting depth is 148 mm; match enclosure and amplifier to the RMS rating for best performance.