Sound Storm Laboratories H206 6.5-Inch 2-Way Marine Speaker with 250 Watts Poly injection Cone Peak Power Handling: 250 watts Magnet Structure: 40 Oz Impedance : 4 ohm Frequency Response: 80hz-20khz Efficiency: 90db (1 Watt/1 Meter)Cone Material: Poly Injection Voice coil: 1" aluminum Tweeter 1" Mylar Dome Plastic Grilles Mounting Depth: 2-3/4" Magnet Structure: 40 oz Impedance: 4 ohm Frequency Response: 80hz-20khz Efficiency: 90db (1 Watt/1 Meter) Cone Material: Poly Injection