19mm polycarbonate HiFi tweeter with shielded magnet . This makes it particularly suitable in the AV area and wherever magnetic shielding is important. Power 100 watts impedance 8 ohms. Frequency response 3 - 20 kHz (2nd order filter), sound pressure 91.5 dB, 51 x 51 mm, height approx. 24 mm, hole circle cutout approx. 43 mm, mounting depth 25 mm, weight 85g.