2-way floorstanding speakerEnclosure Type: Bass reflex Transducer Complement: 2-way Bass Driver: 5.25″ (130mm) aluminium cone  Treble Driver: 1.5″ (38mm) ring dome  AV Shield: No  Sensitivity (2.0V @ 1m): 90dB  Recommended Amp Power: 25-150W  Peak SPL: 110dB  Nominal Impedance: 4 ohms compatible  Minimum Impedance: 3.4 ohms  Frequency Response(+/-3dB): 42Hz ~ 24kHz  Bass Extension(-6dB): 38Hz  Crossover Frequency: 2.4kHz Dimensions: 1025 x 240 x (350+12)mm Net Weight: 20.4kg/pcs