US8D4 8″ Car Subwoofer | 400W RMS, 800W Peak Power, Dual 4 Ohm Voice Coil (Single)

Feel the Depths with the US8D4 Ultra Shock Series Subwoofer

The US8D4 continues the tradition of excellence within the Ultra Shock (US) series, delivering unmatched bass performance in a compact 8-inch design. Wrapped in a bold orange frame, this subwoofer exudes confidence and craftsmanship. Whether you’re a casual listener or a bass aficionado, the US8D4 elevates your audio experience to new heights.

1. Equipped with dual 4-ohm voice coils, the US8D4 provides outstanding wiring flexibility. Configure it to 2 ohms for dynamic, high-impact bass perfect for spirited drives, or wire it to 8 ohms for seamless compatibility with multi-speaker systems. Its 400 watts RMS and 800 watts peak power ensure reliability and power in any setup.
2. The Kevlar Reinforced Ultra Stiff Paper Composite cone and High Excursion Butyl Rubber surround offer a perfect blend of durability and responsiveness. This premium construction ensures the US8D4 consistently delivers deep, resonant bass with accuracy and control.
3. With its exceptional Xmax capability, the US8D4 brings low frequencies to life with incredible detail and depth. From the subtle vibration of a bass guitar to the earth-shaking impact of EDM beats, it delivers an audio performance that’s both dynamic and immersive.
4. Designed for ported enclosures, the US8D4 thrives in a 0.7 cubic foot box with a 4-inch diameter, 5.75-inch-long port. This setup ensures powerful yet distortion-free bass, making every track an auditory masterpiece.
5. Operating within a frequency range of 38Hz to 500Hz and featuring a sensitivity of 92dB, the US8D4 captures every nuance of your favorite music. From subtle rhythms to powerful crescendos, this subwoofer delivers a full-bodied sound that resonates with clarity and impact.

The US8D4 Ultra Shock subwoofer is the perfect balance of precision and performance, designed for those who demand versatility and power. Whether you’re building a high-output audio system or enhancing a multi-speaker setup, the US8D4 delivers. Discover the depth of immersive bass with the US8D4 today!