Product Description: Volfenhag 12" 1000 Watts Max DVC Subwoofer Details: ·Bumped & Vented T-Yoke ·High Temperature 4-Layer Voice Coil ·Double Damper ·Heavy Duty Industrial Magnet Structure ·Push-Type Terminal Posts ·500 Watts RMS ·89.5 dB ·6.4" Mounting Depth ·Fs: 30Hz ·Qts: .526 ·Vas: 1.98 cu. Ft ·Qes: 0.614 ·Qms: 7.698