1 Titanium Super Tweeter Die Cast Aluminum Frame 1 High Temperature Kapton Voice Coil 30 oz. Magnet Structure 150 Watts RMS/300 Watts Rated Power 4-8 Ohms Impedance Ferro Fluid Enhanced Voice Coil Sensitivity: 104dB Frequency Response: 2k-20kHz Crossover Capacitor Included Compliment to any Woofer Enclosure 3.125 Diameter/2.25 Mounting Depth