Model Name ND 20ALType tweeterTweeter size 0,75 "(20mm) aluminum membrane and neodymium magnetTweeter magnet size 18,5x3mmTweeter's voice coil 20mm KSVResonance frequency Fs, Hz 1550Rated power, W 50Maximum power, W 100Frequency response, Hz 3000-20 000Sensitivity, dB /W /m 93Impedance, Ohm 4