The SoundQubed HDX4.2-12D2 is a competition-grade 12” subwoofer engineered for relentless power, control, and elite low-end performance. Delivering a staggering 4000W RMS and 16,000W burst power, this dual 2-ohm monster is built to dominate in high-output car audio systems. With a sensitivity of 85.1dB and a low resonant frequency of 35.6Hz, it delivers clean, thunderous bass with commanding precision. A colossal 402 oz magnet, massive 4” high-temp voice coil, and 23mm Xmax allow for extreme excursion and durability. Housed in a reinforced steel frame, the HDX4.2-12D2 is the go-to choice for serious competitors and bassheads who demand maximum performance without compromise.