Model Ultra-high-end tweeter Diameter 30 mm / 1.18″ Power Handling (RMS/max.) 100 / 150 Watts Impedance 4 Ohms Efficiency 82 dB Frequency Response 1000 Hz – 26 kHz Voice Coil CCA Membran Layout coated textile Mounting Ø 60 mm / 2.36″ Mounting Depth 41 mm / 1.61″ Resonance Frequency (Fs) 500 Hz