Sundown Audio Xv3 12" inch DVC Dual 1 Ohm (X Series) Car Subwoofer 2000 Watts RMS
Polk Audio MagniFi Max AX Dual 2.5” Drivers Three 0.75” Tweeters and Four 1” X 3” Mid-Woofers Sound Bar with Wireless Subwoofer Black MAGMAXAXATMOS - Best Buy
Alpine SWX-1243D Type-X 12" subwoofer with dual 4-ohm voice coils at Crutchfield
Amazon.com: American Bass XMAXXX 15" Subwoofer 8000 Watts Max Dual 2 Ohm X-Max Monster Sub : Automotive