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Model: ES-61 1" (25mm) Titanium Alloy Dome Tweeter Frequency Response 40Hz-20kHz Woofer : 6 1/2" (165mm) Fiber Glass Cone Impedance: 8-Ohm Frequency Response 55Hz - 20kHz +/- 3dB Sensitivity 88 dB Power Handling 60W RMS / 100W Peak