2"" Titanuim Diaphram Super Tweeter * 300 Watts RMS / 600 Watts Peak - 2"" High Temperature Kapton Voice Coil * Ferro Fluid Enhanced Voice Coil - Mylar Crossover Capacitor Included * Sensitivity: 98dB - Frequency Response: 2kHz~25kHz * 4-8 ohm Impedance - 3.175" Diameter - 2" Mounting Depth * Frequency response: 2000-25,000 Hz * 600 Watts Max. 4-8 Ohm * 2" titanium super tweeter die cast aluminum frame * Crossover capacitor included * 3 1/8" Diameter/ 2" Mounting Depth