Eminence Delta-12LFA, Loudspeaker, Woofer, Size: Ø 12"", Rated power: 500 W RMS, Impedance: 8 Ohm, Frequency range: 44 - 3000 Hz, Eminence LF models offer more in their bass range than standard models thanks to a higher voice coil overhang/deflection X(max), and are thus ""real"" woofers for all 3-way systems., Especially for high-performance bass reproduction in PAs and club systems and for bass combos and stage monitors