PowerBass XL-1240TD 12" Dual 4-Ohm Shallow Mount Subwoofer The proprietary one piece cone gives accurate and efficient bass to a system without taking a whole lot of space. Designed to work best in a small sealed enclosure that will fit in most spaces that a standard woofer won't opens up new possibilities for the most discerning music fan. Using the same turbine style Poly/Glass Fiber basket as the standard XL subwoofers this shallower version offers all the features and reliability from the Xtreme family. Boasting a flat injection molded cone and inverted ferrite magnet these drivers come in nearly 2-inches shorter than their standard XL counterparts. Features - • New PBX logo dust cap • 12" Shallow Mount Subwoofer Dual 4-Ohm Subwoofer • 400 Watts RMS/800 Watts Max • Proprietary Single Piece Injection Molded Flat Cone Design • Proprietary Composite Poly/Glass Fiber Basket • 2" Vented KSV Voice Coil Former • Chrome Push Terminals • 3.8" Mounting Depth • 400 Watts RMS/800 Watts Max Specifications - • Nominal Impedance: single 4 ohm • BL: 17.568 tm • Inputs: Dual Coil • Subwoofer Frequency Range: 33Hz - 450Hz • Voice Coil Size: 2 in • Material: Injection Polypropylene • Magnet Size: 140 oz • Sensitivity (1W / 1M): 84 dB • Cutout Diameter: 11" (281mm) • Mounting Depth: 3.8" • Spl: 84db • No: 0.157% • Qts: 0.526 • Qes: 0.597 • Qms: 4.458 • Mms: 204.196 g • Cms: 122.804 Um/n • Vas: 5.481 Ltr • SD: 510.7 sqCM • Fs: 33hz • Test Impedance: 6.8-ohm • VC Impedance: 4-ohm • Size: 12" shallow • Sensitivity: 84 dB • Frequency Response: 33Hz - 450Hz • Voice Coil Size: 2" • Power Handling (RMS/Peak): 400 / 800 watts