Sensitivity (2.83V @ 1m) 89dB Recommended amplifier power 25-100W Peak SPL 97dB Nominal impedance 8Ω Compatible Minimum impedance 3.8Ω Frequency response (+/-3dB) 35Hz ~ 20kHz Bass extension (-6dB) 30Hz Crossover frequency 300Hz&3.6kHz Cabinet Volume (in litres) 56L Height (on plinth) (1080+30)mm Width 210mm Depth (with terminals) (335+30)mm Carton size 1290*480*340mm Net weight 24kg/pcs Gross weight 26.2kg/ctn