Seismic Audio - SA-Rift_46G - 4x6 Bass / Guitar Speaker Cabinet Model #: SA-Rift_46G Woofer: Four 6" - each has a 30 oz. magnet with a 1.5" Kapton voice coil Frequency response: 20Hz - 10kHz 250 Watts RMS, 500 Watts Peak Impedance: 8 Ohms