JVC CS-DR1721 6-3/4" 2-Way Coaxial Speakers / 300W Max Power Carbon Mica Cone Robust and lightweight carbon mica material provides highly responsive, clear and undistorted reproduction. Hybrid Surround Rubber Coated Cloth with increased mobility enables high efficiency and improved follow-up to audio signals. Small Design Tweeter Cover Newly developed small cover significantly reduces areas that interfere with the woofer cone. High-quality sound is assured.