The Skar Audio VXF series was engineered to deliver the perfect combination of SQ/SPL found in a competition grade car subwoofer of its power class. The VXF-12 D4 is conservatively rated at 3, 000 watts peak power, and 1, 500 watts RMS, and is unrivaled when it comes to power handling and overall performance. Designed around achieving a super low “Fs”, the VXF series delivers low end response with absolute authority, all while being versatile enough to sound great across a wide range of music. This VXF subwoofer utilizes a high temperature 3" copper voice coil, which combined with its massive 300 oz ferrite motor, allows this subwoofer to deliver head turning bass at the highest SPL levels. Furthermore, we integrated a stitched, high roll foam surround, with a competition grade paper cone, ensuring that this subwoofer is setting a new precedent in terms of sound quality and strength. Whether you are looking to be the loudest vehicle at a car show, or just wanting to enjoy the bass in your daily driver at unprecedented sound levels, the VXF series is the unequivocal choice. Dual 4-ohm voice coil configuration, Sensitivity (SPL): 83. 6 dB, Fs: 34. 4 Hz. Subwoofer Mounting Depth: 8. 50". Frequency Response: 30-500 Hz. Xmax: 25 mm.