SoundQubed HDX4.2 Series Subwoofer 15 Inch 4″ DVC SQ-HDX4.215

The SoundQubed HDX4.2-15 is a competition-grade 15” subwoofer engineered for extreme power, deep bass response, and uncompromising performance. Delivering 4000W RMS and a staggering 16,000W burst power, this dual 2-ohm monster is built for high-output systems that demand thunderous low-end authority. With a sensitivity of 88.5dB and a resonant frequency of 33.9Hz, it produces clean, controlled bass with serious impact. A massive 402 oz magnet, oversized 4” high-temp voice coil, and 23mm Xmax ensure aggressive excursion, excellent thermal handling, and long-term reliability. Designed for ported enclosures between 3 to 6 cubic feet, the HDX4.2-15D2 is a top-tier choice for competitors and bass enthusiasts who refuse to settle for anything less than elite performance.