Model 2-way component speakers Diameter 130 mm / 5.12″ Power Handling (RMS/max.) 90 / 140 Watts Impedance 4 Ohms Efficiency 90 dB Frequency Response 60 Hz – 20 kHz Tweeter 19 mm / 0.75″ soft dome Membran HQPP cone with 3D-structure Mounting Ø 117.5 mm / 4.63″ Crossover 12 dB/oct – high pass filter.