The CS-Series delivers remarkable performance and ultra-clean bass, utilizing a heavy-duty motor/magnet structure with EVC (Extended Voice Coil) for even deeper lows. ^^Superb woofer design guarantees a significant upgrade in sound from a dull factory speaker system. Phase plugs eliminate distortion for utmost clarity and accuracy. ^^Three tweeter mounting options including flush, angled and surface pods^^UV-treated poly-foam surround resists heat or direct sunlight^^Neodymium tweeter magnets allow for increased volume in high frequencies