Speaker Driver Model No:TD8501 Diaphragm: Titanium Power Rating: 100W RMS Sensitivity: 110db Speaker DriverModel No:TD8501Diaphragm: TitaniumPower Rating: 100W RMSFrequency Response: 500-20kHzSensitivity: 110dbImpedance: 8 ohmsVoice Coil: 3" Recommended X-over: 1k Speaker Driver