The SoundQubed HDX4.2 is a competition-grade subwoofer engineered for relentless power, precision, and extreme low-end performance. Delivering a monstrous 4000W RMS and 16,000W burst power, this dual 1-ohm beast is designed to dominate high-output car audio systems. With a sensitivity of 84.9dB and a low resonant frequency of 34.4Hz, it delivers clean, powerful bass with commanding depth and control. A massive 402 oz magnet, oversized 4” high-temp voice coil, and 23mm Xmax allow for aggressive excursion and exceptional thermal durability. Housed in a reinforced steel frame, the HDX4.2 is the ultimate choice for serious competitors and bassheads demanding top-tier performance without compromise.