The SPX-65C - 6.5-inch 2-Way high performance component speaker system delivers unequivocal sound quality and performance for the most enhanced listening experience. The SPX series was engineered to be efficient and powerful, all while sounding incredible at the loudest volumes. Featuring a premium butyl rubber surround and a PMI composite multi-layered cone, as well as a high temperature 1.35-inch voice coil, every aspect of these speakers is of the highest audiophile grade. This component speaker system utilizes an external crossover network, as well as 25mm (1-inch) aluminum dome tweeters with silk surrounds for crystal clear high frequency sound reproduction. Frequency Response: 42-20,000 Hz. Sensitivity: 92 dB. Sold as a pair. Impedance: 4 Ohms. Max Power: 400 Watts (Pair), RMS Power: 200 Watts (Pair). Mounting accessories as well as speaker grilles are included. Mounting Depth: 2.64 inches.