Alpine W12S4 BassLine Series 12" 4-ohm subwoofer

Product info: 12" 4-ohm subwoofer polypropylene and mica cone with poly-foam surround stamped steel frame power handling: 50-250 watts RMS peak power: 750 watts sensitivity: 87.9 dB frequency response: 22-200 Hz top-mount depth: 5-5/16" sealed box volume: 1.09 cu. ft. ported box volume: 1.91 cu. ft. grille not included warranty: 1 year Alpine W12S4 owner's manual One 12" Subwoofer Adhesive backed foam gasket Application Guide (English/ French) On-line product registration information (English/ French/ Spanish) Warranty information (English/ French) Important Notice! (English/ French) Features and Specs Size 12-inch Impedance (Ohms) 4 Cone Material Polypropylene and Mica Surround Material Poly-Foam Basket Material Steel Grille None included Free-Air No Dual Voice Coil No Sensitivity 87.9 dB at 1 watt Frequency Response 22 - 200 Hz Max RMS Power Handling 250 Peak Power Handling (Watts) 750 Top Mount Depth (inches) 5 5/16 Bottom Mount Depth (inches) N/A Cutout Diameter or Length (inches) 10 9/16 Frame Width 12.6 Frame Length 12.6 Vas (liters) 64.3 Fs (Hz) 30 Qts 0.49 Xmax (millimeters) 10 Parts Warranty 1 Year Labor Warranty 1 Year Box Requirements Ideal Sealed Box Volume (cubic feet) 1.09 Minimum Sealed Box Volume (cubic feet) 0.75 Maximum Sealed Box Volume (cubic feet) 1.5 Ideal Ported Box Volume (cubic feet) 1.84 Minimum Ported Box Volume (cubic feet) 1.43 Maximum Ported Box Volume (cubic feet) 2.43 Port diameter (inches) N/A Port length (inches) N/A