5 CORE 15 inch Subwoofer Replacement PRO DJ Speaker Sub Woofer Loudspeaker Wide Full Range Loud 250 Watts RMS (2200W PMPO) 90oz Magnet 15-185 MS 250W - Walmart.com
Hertz MPS 250 S2 shallow subwoofer
JL Audio ACP108LG-W3v3 MicroSub+™ 250-watt 8" powered subwoofer at Crutchfield