2-Way Indoor/Outdoor Speaker with transformer:Power Capacity:150WattsFrequency Range: 50Hz-20kHz Impedance:8 OhmSensitivity:90dB Woofers: 8" PP coneTweeter: 1" Dimensions(HWD): 375x280x235mmTransformer:32W-16W-8W-4W 70V or 100V