Niles OS5.5 (Pr) 5 Inch 2-Way High Performance Indoor Outdoor Speakers Integrated woofer/baffle assembly increases cone area to provide powerful bass output Interlaced carbon fiber cone is extremely rigid to reduce breakup and lower distortion Butyl rubber cone surround damps resonance and provides exceptional durability Dispersion stabilizer distributes midrange tones for clear off-axis sound Tri-laminate Teteron dome with fluid-cooling and ultra-wide dispersion for clear and detailed high-frequencies