Pioneer TS-D1720C 6.75-Inch D-Series 260-Watt Speaker Package Woofers feature dual-layer IMX aramid/basalt fiber composite cone with butyl rubber surround 1-1/8-inch soft-dome tweeters with magnetic fluid and neodymium magnet Audiophile-grade outboard crossover with -12dB/octave low- and high-pass filter 6.75-inch component system with 260 watts maximum power handling (60 watts nominal) Woofers feature dual-layer IMX aramid/basalt fiber composite cone with butyl rubber surround 1-1/8-inch soft-dome tweeters with magnetic fluid and neodymium magnet Audiophile-grade outboard crossover with -12dB/octave low- and high-pass filter 2-1/2-inch mounting depth; fits 6 x 8-inch applications