Specifications :Power handling.............................50 Watts, Continuous ProgrammeNominal impedance.......................8 ohmsSensitivity.....................................7 (Input watts at 400 Hz required to produced 96dB at 1 metre in an anechoic environment)Crossover Frequency.....................1000 Hz (at 12dB per octave)Low frequency Direct RadiatorNominal Diameter..........................295 mmVoice coil Diameter........................50 mmBI Factor......................................16 x 10 gauss/cmFundamental Resonance................22 HzHigh Frequency Compression DriverDuralumin Diaphragm Diameter.......50 mmVoice Coil Diameter.......................50 mmHorn Cut-off Frequency...................500 HzDimensions(w x d x h)..................35 x 25 x 53 cmWeight........................................14 kg