their powered by a 500 watt amp (please read the details on the dimensions)
http://www.amazon.com/Atrend-10-Inch-Enclosure-Divided-Chambers/dp/B0013MYXCK/ref=pd_cp_e_1
http://www.amazon.com/Dual-Slot-Vented-Speaker-Enclosure/dp/B001LU149O/ref=pd_sim_sbs_e_3