This 6" speaker packs 15 watts of power. It is a good upgrade for small practice amps. Overall Diameter 6" Impedances 4, 8 ohm Rated Power 15 watts Magnet Ceramic Overall Weight 1.3 lbs Response 80-10k Voice Coil Diameter 0.75" Magnet Weight 5.6 oz For more information about our Jensen® speakers, see our tech corner article on Jensen Speakers.