DS18 SRW12 Shallow 12" Subwoofer 440W Max SVC or DVC

Model: SRW12.4 / SRW12.4D Type: Shallow Subwoofer Size: 12" RMS Power: 220W MAX Power: 440W Impedance: DVC or SVC 4 Ohm Voice coil size: 2" Magnet: Ferrite Magnet Weight: 45oz Frequency Response: 25-250Hz Materials Frame: Aluminum Cone: Paper Surround: Rubber Edge Voice Coil Former Material: Aluminum Measurements Mounting Cut-Out: 10.9" (279mm) Mounting Depth: 3.54" (90mm) Overall Diameter: 12.44" (316mm) Enclosure Specifications Optimum Sealed FT3 0.75FT3 Optimum Ported FT3 1.5 FT3