DOME POLYGLASS SPEAKER Type 2-way compact sealed speaker Drivers 4″ (10cm) Polyglass mid-bass, 1″ (25mm) Al/Mg inverted dome tweeter Freq response 80Hz – 28kHz Sensitivity 88 db Nominal impedance 8 ohms Recommended power 25-100W Dimensions(HxWxD) (6.77”x5.66”x5.62”) Weight 4.2lbs (1.9kg) DOME SUBWOOFER Type Active bass-reflex subwoofer Drivers 8″ (21cm) Poly flex woofer Freq response 42Hz – 200Hz Sensitivity Variable crossover 50Hz to 200Hz, Phase inverter 0°/180°, Auto-power, LFE input Dimensions(HxWxD) (15.74”x10.86”x10.86”) Weight 18lbs (8.2kg)