2-way floorstanding speaker  Enclosure type: bass reflex  Bass driver: 6.5″(165mm) composite fibre x2  Treble driver: 25mm microfibre dome  AV shield: No  Sensitivity (2.83V @ 1m): 90dB  Recommended amplifier power: 30-150W  Peak SPL: 106dB  Nominal impedance: 8Ω Compatible  Minimum impedance: 4.2Ω  Frequency response (+/-3dB): 42Hz ~ 20kHz  Bass extension (-6dB): 38Hz  Crossover frequency: 2.3kHz  Cabinet Volume (in litres): 42L  Height (on plinth): (975+20)mm Width: 226mm  Depth (with terminals): (300+8)mm  Carton size: 420 x 340 x 1090mm  Net weight: 19.1kg/pcs Gross weight: 22.4kg/ctn