50W 4Ohm 8Ohm Car Subwoofer 4 Inch Woofers For Speaker Fiberglass Woven Basin Bass Speaker Long Stroke Loudspeaker Home Theater DIY Description 1.Fiberglass Woven Basin,have the sound quality and advantages of paper cones and metal cones 2.Large R-side folding ring design, original rubber material, full of flexibility, fast response to low frequency 3.80 magnetic steel design to ensure the heavy output and bursting effect of the speaker 4.With ventilation holes in the basin frame, good exhaust and heat dissipation effect Feature Impedance:4Ohm 8Ohm Rated Power:50W Frequency:85Hz-2KHz Sensitivity:86db3db Resonant Frequency85Hz Voice Coil:25mm QTS:0.57 Sound cone materialFiberglass Woven Basin The Price is for 1 pieces speaker only