Axton ATW16 16 CM Subwoofer 2 x 2 Ohm 75 Watt RMS Subwooferchassis | eBay
Ground Zero GZUW 8SQX 8″ sound quality subwoofer - Best Price – Droppin HZ Car Audio
Electro-Voice F.01U.275.607 15" Woofer For SXA250 | Full Compass Systems
Amazon.com: 1x SoundXtreme Premium Elite ST-410 10 Inch Car Audio Subwoofer 1500 Watts Max Power Dual 4 Ohm Voice Coil High Power Bass Surround Sound 10" Sub Speaker System : Electronics