2-way bookshelf speaker  Enclosure Type: Bass refle  Transducer Complement: 2-way Bass Driver: 5.25″ aluminium cone  Treble Driver: 1.5″ ring dome  Sensitivity (2.0V @ 1m): 88dB Recommended Amp Power: 25-100W  Peak SPL: 108dB  Nominal Impedance: 8 Ohms compatible  Minimum Impedance: 3.5 Ohms Frequency Response(+/-3dB): 52Hz ~ 24kH  Bass Extension(-6dB): 46Hz  Crossover Frequency: 2.6kHz  Dimensions: 300 * 240 * (350+12)mmNet Weight: 7.6kg/pcs