Eminence Delta-12LFC, Woofer, Especially for high-performance bass reproduction in sound and club systems as well as for bass combos and stage monitors, Size: 12"", Power rating: 500 W RMS, Impedance: 4 ohms, Frequency range: 45-2300 Hz, Eminence LF models are specifically designed with extended XMAX to deliver more bass than standard models and provide ""a true woofer"" for three-way applications.