Jensen J12W 12 inch 1200 Watt Subwoofer 4-Ohm Car Audio Sub w/ 40oz. Magnet, 9 lbs., New

<p><strong>Description:</strong></p><p>Your Jensen subwoofer is an amazing addition to your car audio system providing deep and profound bass<br><br><strong>DIGITALLY OPTIMIZED SUBWOOFER<br></strong>Was engineered to produce efficient and low sounding bass while generating 1 .200 Watts of Peak Power (300 Watts RMS) at 4 Ohms<br><br><strong>STEEL STAMPED REINFORCED STRUCTURE<br></strong>Was made to be strong and flexible in order to increase linearity and allowing greater movement at peak demands for studio quality sound in your car<br><br><strong>DOUBLE STITCHED RUBBER INJECTED FOAM SURROUND<br></strong>Ensures that your music stays accurate and loud by providing: better heat resistance . internal damping . added bass response and reliability during high excursion rates<br></p><p><strong>Features:<br></strong></p><ul><li>300 Watts Rms / 1200 Watts Peak<br></li><li>40oz. Magnet<br></li><li>4-ohm Impedance<br></li><li>Double Stitched Rubber Injected Surround<br></li><li>Works In Sealed And Ported Enclosures<br></li></ul><p><strong>Specifications:<br></strong></p><ul><li>System Type 12? Subwoofer<br></li><li>Impedance 4 ohms<br></li><li>Frequency Response 27Hz-350Hz<br></li><li>Total Peak Power 1200W<br></li><li>RMS Power 300W<br></li><li>Efficiency 1W / 1M 90dB<br></li><li>Efficiency 1W in-car 89dB<br></li><li>Type Subwoofer<br></li><li>Diameter 12?<br></li><li>Woofer Cone Material Polypropylene<br></li><li>Woofer Surround Material Double stitched rubber injected<br></li><li>Woofer Magnet Weight 40oz.<br></li><li>Woofer Basket Stamped steel<br></li><li>Mounting Cutout 279mm (11.00?)<br></li><li>Mounting Depth 5.75?<br></li><li>Fs 30 Hz<br></li><li>Qts (Total Q) 0.566<br></li><li>Qes (Electrical Q) 0.595<br></li><li>Qms (Mechanical Q) 11.701<br></li><li>Vas 92.354 L</li></ul><p><strong>Sealed Enclosure Recommendations:<br></strong></p><ul><li>Good Bass Performance<br>Mini-Enclosure<br>(Vb) Box Volume=.75 Cu. Ft.<br>Dimensions: 14" W x 14" H x 11.5" D<br><br></li><li>Better Bass Performance<br>Small Enclosure<br>(Vb) Box Volume=1.00 Cu. Ft.<br>Dimensions: 15" W x 14" H x 13" D<br><br></li><li>Best Bass Performance<br>Medium Enclosure<br>(Vb) Box Volume=1.25 Cu. Ft.<br>Dimensions: 17" W x 15" H x 13" D<br></li></ul><p><strong>Vented Enclosure Recommendations:<br></strong></p><ul><li>Good Bass Performance<br>Mini-Enclosure<br>(Vb) Box Volume=1 Cu. Ft.<br>Dimensions: 14.25" W x 17" H x 12" D<br>(P) Port=3" ID x 9.7" Long<br><br></li><li>Better Bass Performance<br>Small Enclosure<br>(Vb) Box Volume=1.25 Cu. Ft.<br>Dimensions: 14.50" W x 17" H x 14" D<br>(P) Port=3" ID x 10.25" Long<br><br></li><li>Best Bass Performance<br>Medium Enclosure<br>(Vb) Box Volume=1.5 Cu. Ft.<br>Dimensions: 14" W x 20.25" H x 14" D<br>(P) Port=3" ID x 11.75" Long??</li></ul>