Throat diameter 75/3 mm/inch Rated impedance 4 ohm Rated power 20 watt Program power 30 watt sensitivity£¨1W/1m£© 97 dB Frequency range 1.0---16K Hz Recommended crossover ----- --- Vioce coil diameter 14/0.55 mm/inch Voice coil material Copper Voice coil former design ------ Diaphragm material paper Flux density ------ T Magnet material ferrites Magnet size ¦µ55 mm Mounting Information Threaded 4 M5 holes at 90 deg. 74/3.0 mm/inch Overall diameter 98/-- mm/inch Overall height 43/-- mm/inch Net weight 0.28 kg Cross weight 0.3 kg