Sony XSGTX6930 6x9-Inch Coaxial 3-way Speakers (Discontinued by Manufacturer) 6 x 9-inch coaxial three-way speaker with 400 Watts peak power Highly Oriented Polyolefine (HOP) cone with santoprene surround 2-1/2-inch HDLD midrange drivers and 1-inch polyetherimide (PEI) dome tweeters In-line crossovers for maximum detail and efficiency Frequency Response: 28-25,000 Hz