Aurum Cantus G3 Aluminum Ribbon Tweeter The size of G3 aluminum ribbon tweeter is between G1's and G2's, whose sounds is attractive and also convenient for using. G3 is an excellent choice for DIY customer. Technical data (Patent No.ZL98 2 46922.5) Rated impedance: 8 Ω Rated power: 60 W Sensitivity: 100dB/w/m Frequency range: 1300Hz－40KHz±3dB Ribbon dimension (mm): 8.5W×130L×0.01T Ribbon shape: wave Magnet: magnet shielded Recommended frequency cut: above 2300Hz External dimension (mm): 74W×168H×90D Weight: 1.70Kg/pc