DS18 GEN-X124D Car Subwoofer Audio Speaker - 12" in. Paper Glass Fiber Cone, Red Steel Basket, Dual Voice Coil 4+4 Ohm Impedance, 900W MAX Power and Foam Surround for Vehicle Stereo Sound System WATT POWER - 12-Inch Car Audio Subwoofer offers a 450W RMS & peak power of 900W Max w/ 4+4ohm impedance. Lets you pump out some great low-frequency bass volume to enhance the party vibe making it a great addition to your Car / SUV music audio system ENHANCED SOUND - The Gen-X line of subwoofers are a great addition to your car stereo sound system. No sound system is complete without the perfect subwoofer for complimentary bass so don't deprive your Vehicle from the absolute best sound you can get! TREATED FOAM SURROUND - Made entirely of specially treated foam surround for durability. Designed with this non-fatiguing suspension to keep equipment safe. It is a clean-cut car subwoofer that boasts a non-pressed paper cone and Red steel basket SUPERIOR POWERFUL SOUND - The bass speaker features a 12-inch high-quality paper with glass fiber cone. The 70-oz magnetic structure and 2-inch black aluminum 4 layer voice coil achieve a frequency response of 44 Hz to 4.8 kHz. Sensitivity 87.5dB DUAL VOICE COIL: The speaker subwoofer comes with a dual 4 Ohm impedance that can be wired as 4 or 8 Ohm. The 2" 4-layer voice coil can resist corrosion and ensure a longer life span INSTALLATION/PLACEMENT - The car subwoofer can be mount inside a box / enclosure. The sub has an Overall Diameter 12.44", Baffle Cutout Diameter 10.9", and Mounting Depth 5.74"