Key Features Stage Sound Series Flush Mount Speaker 17 Cm Polypropylene Woofer Cone Heavy-Duty Woofer Magnet Circuit Dual-Cone Speaker System 250W Peak Power 30W Rms Power Speaker/Woofer Specifications Peak Input Power 250W Rated Input Power 30W Woofer Cone Material Polypropylene (Pp) Cone Speaker Basket Steel Speaker Surround Cloth Sensitivity 89Db/W/M Frequency Response 35Hz ~ 18000Hz Speaker Impedance 4Ω Dimensions (W X H X D) 165 X 165 X 49.4Mm Mounting Depth 44Mm Mouting Hole Diameter Ø 144Mm Speaker Weight 536Gr Gross Weight 1134Gr Weight Of Magnet 220Gr