CS-HX639 3-Way Coaxial 320W Peak/40W RMS Power Frequency Response: 30 - 25,000Hz Sound Pressure Level: 88dB/W.m 16 cm (6-1/2'') Carbon Mica Cone Woofer 52mm (2-1/16'') Poly-Ether Imide Cone Midrange 12mm (1/2'') Poly-Ether Imide Dome Tweeter Ferrite Magnet (Woofer) Neodymium Magnet (Mid-Range) Rubber Surround Mounting Depth: 45.5 mm (1-13/16'')