10-Inch, Active, Front-Firing Studio Subwoofer Intended for serious personal studios and professional music-production environments, the Eris Pro Sub 10 helps you take charge of the low-frequency foundation of your mixAn ideal companion to Eris Pro- and Eris Studio-series reference monitors, the Eris Pro Sub 10 complements full-range monitors without overshadowing them and extends the reach of your full-range system's low end with a natural sound. Powerful and musical, the PreSonus® Eris Pro Sub 10 active, front-firing studio subwoofer is designed to deliver fast and accurate transient response, extending low frequencies down to 20 Hz, allowing you to hear the full-spectrum range of your mix. Driven by 170W (RMS) Class AB amplification, the Eris Pro Sub 10's 10-inch, glass-composite, low-frequency driver delivers tight, responsive sub-bass, thanks to its lightweight and rigid cone. This design provides lower distortion than other materials for sub-bass reproduction that's as coherent a