More on Amazon.com : http://www.amazon.com/gp/product/B008O58CA8?tag=purrfectcatdi-20
Seismic Audio - Quake15_4_Ohm - 15 Raw Woofer Speaker Driver PRO AUDIO PA DJ Replacement -
Model Seismic Audio - Quake 15 4 Ohm
15 WooferSpeaker
50oz Magnet with 25 voice coil
200 Watts RMS 400 Watts Peak
Impedance 4 Ohms