This is a package deal for 2 Brand New Skar Audio vd-10 Dual 4-ohm subwoofers. The Skar Audio vd-10 D4 is a 10-inch, Dual 4-ohm, shallow mount car subwoofer. This subwoofer was engineered to sound great and handle ample amounts of power all while maintaining a shallow footprint, which allows them to be very versatile as well as get loud. This driver utilizes a high temperature 2-inch voice coil, which in conjunction with it's powerful, yet low profile single stack ferrite magnet, allow it to perform with dominance. The vd Series make for a great under seat subwoofer or for use in applications where mounting depth is limited. Shallow mount 10-inch car subwoofer. Dual 4-ohm voice coil. Max power: 800 Watts. Rms power: 500 Watts. Fs: 41.9 Hz, SPL: 85.1 dB, useable . mounting depth: 4.41"