Key Features Stage Sound Series Flush Mount Speaker 10 Cm Polypropylene Woofer Cone Heavy-Duty Woofer Magnet Circuit Dual-Cone Speaker System 220W Peak Power 21W Rms Power Speaker/Woofer Specifications Peak Input Power 220W Rated Input Power 21W Woofer Cone Material Polypropylene (Pp) Cone Speaker Basket Steel Speaker Surround Cloth Sensitivity 88Db/W/M Frequency Response 50Hz ~ 18000Hz Speaker Impedance 4Ω Dimensions (W X H X D) 104 X 104 X 46.2Mm Mounting Depth 43Mm Mouting Hole Diameter Ø 94Mm Speaker Weight 369Gr Gross Weight 800Gr Weight Of Magnet 160Gr