Hybrid Carbon Fiber/Polypropylene ConeDelivers precise, dynamic, and impactful sound with lasting durability. ^^ Santoprene Rubber SurroundEnhances bass response and allows greater excursion for superior sound quality. ^^ Midrange Driver & Dynamically Balanced Silk Dome TweeterProvides fullrange coverage, delivering smooth, detailed highs and mid frequencies with the power of neodymium magnets. ^^ Integrated Crossover with Tweeter ProtectionEnsures seamless frequency transitions and prevents distortion, even at high volumes.