Seismic Audio Quake_12Pair_4ohm Raw Woofers Speakers Drivers Pro Audio PA DJ Replacement, 12-Inch Model #: Seismic Audio - Quake 12 (Pair) 12" Woofer/Speaker 50oz Magnet with 2.5" voice coil 150 Watts RMS, 300 Watts Peak Impedance: 4 Ohms