BIC America Eviction Series 15 in. 430-Watt 3-Way Bi Ampable Floor Speaker, Black With a woofer magnet twice the size of the RTR1530 magnet, 95dB sensitivity, an extremely wide and level response range, and outstanding power-handling capability, the RTR EV15 sets a new high in performance to price ratio. It will accept the output of powerful amplifiers without a whimper and look great 