The SoundQubed HDS3.3-12D4 is a competition-grade 12” subwoofer designed for aggressive, hard-hitting bass with control and reliability. Delivering 1200W RMS and 2400W peak power, this dual 4-ohm sub is built to thrive in high-output daily drivers and SPL setups alike. With a sensitivity of 85.6dB and a resonant frequency of 35.2Hz, it delivers deep, tight low-end response with clarity and authority. A robust 190 oz magnet, 3” high-temperature voice coil, and 23mm Xmax ensure strong excursion and thermal durability. Whether used in a sealed or ported enclosure, the HDS3.3-12D4 brings powerful, precise bass to builds that demand both performance and reliability.