Driver ComplementTweeterQuantity 1 Diameter 1" (2.54cm) Type silk/polymer Dynamic Balance dome Mid / WooferQuantity 1 Diameter 5 1/4" (13.34cm) Type Dynamic Balance bi-laminate cone ElectricalTotal Frequency Response 53Hz-25kHz Upper -3dB Limit 24 kHzLower -3dB Limit 61 HzNominal Impedance 8 ohmsEfficiency 90 dBRecommended Amplifier Power 20-100 watts per channelInputs gold-plated 5-way binding posts DimensionsCabinet DimensionsHeight 11" (27.94cm) Width 7" (17.78cm) Depth 9" (22.86cm) Overall Dimensions (including base) 11 1/2" H x 7 1/4" W x 9 1/2" D Product Weight (each) 9.4 pounds