Model Name STQ 693Type 3 way coaxial-xWoofer size 6X9 "(163x235mm)Woofer magnet size 80x40x15mmWoofer magnet weight, g 277Woofer's voice coil 25mm KSVResonance frequency Fs, Hz 50Surround Foam rubberMid size 2,5 "(57mm) to PEI diaphragm and neodymium magnetmid magnet size 45x22x7mmMid magnet weight, g 42mid's voice coil 13mm NSVTweeter size 0,5 "(13mm) to PEI diaphragm and a ferrite magnetTweeter magnet size 36x18x6mmTweeter's voice coil 13mm ASVGeneral : & nbsp;Rated power, W 80Maximum power, W 160Frequency response, Hz 55-20 000Sensitivity, dB /W /m 90Impedance, Ohm 3Installation depth 2,91 "(74mm)Weight, g 1010