The Peerless NE Series full-range drivers feature an innovative sculpted, open cast aluminum basket design that minimizes internal acoustic reflections and acts as the neodymium motor's heatsink. An additional heatsink provides extra thermal dissipation. The cone is constructed of a coated natural wood fiber, with a butyl rubber surround designed by finite element analysis for linearity of performance. FEA techniques also contribute to the motor's copper cap, which reduces inductance.