The SoundQubed HDX3.2-18D1 is a competition-tier 18” subwoofer built for extreme low-end output, durability, and raw power. Delivering 2500W RMS and a massive 12,500W burst rating, this dual 1-ohm monster is designed to move serious air in high-output car audio systems. With a resonant frequency of 31.6Hz and a sensitivity of 86.3dB, it delivers deep, forceful bass with impressive clarity and control. A colossal 300 oz magnet, 3” high-temp voice coil, and 15mm Xmax allow for aggressive excursion and consistent thermal handling. Designed to thrive in ported enclosures ranging from 5 to 7 cubic feet, the HDX3.2-18D1 is built for bassheads and competitors who want nothing less than thunderous, ground-pounding performance.