Amazon.com: Rockville W65K9D2 6.5" 1000w Peak Car Audio Subwoofer Dual 2-Ohm Sub 250w RMS CEA Rated : Electronics
Amazon.com: Dual Electronics BP1204 High Performance 12 inch Car Audio Subwoofers in a Tuned Bandpass Enclosure with Blue illumiNITE LED Illumination and Plexiglass Viewing Windows and 1,100 Watts of Peak Power : Electronics
JBL SRX928S Dual 18" Powered Subwoofer SRX928S B&H Photo Video
Amazon.com: Cerwin Vega H6E12DV Double 12" Subwoofer Enclosure 2Ω for Car Audio with 500W RMS and 2400W Max Power Handling, Dual Voilce Coil, Vented, Single Unit. : Electronics