Dayton Audio's ND140-8's compact aluminum cone demonstrates the latest advances in high-excursion design processes. Its compact size and high output make it perfect for your next point-source or line array speaker project. Product Highlights Extended-range 54 Hz to 8 kHz performance Rubber-edged aluminum alloy cone Large excursion capability4 mm Xmax, 20 mm peak Self-shielded Neo-Balanced motor structure 1" 4-layer underhung voice coil with polyimide former 40 watts RMS power handling Dayton Audio's ND140-8's compact aluminum cone drivers demonstrate the latest advances in high-excursion design processes. An efficient, low-distortion Neo-Sym motor is combined with a rigid yet lightweight aluminum diaphragm, yielding impressive high-impact audio reproduction. Perfect for single point-source applications, or combined in multiples and line arrays.