The Eighteen Sound 10NMBA520-8 is a professional 10" neodymium mid-bass for compact two-way systems and line array applications. It builds on the 10NDA520 with improved sensitivity and higher program tolerance. The design with 65 mm ISV voice coil, neodymium motor and Active Impedance Control (AIC) provides low distortion, linear impedance and high intelligibility. The element is optimized for reflex cabinets and mid-low sections in larger systems.