Amazon.com: Boss Chaos CX122 12-Inch 1400 Watt Car Subwoofer and Q Power QSBASS12-VENTED 12-Inch Single Heavy Duty Vented Subwoofer Enclosure Box : Electronics
15" Subwoofer Dual 4 Ohm 1400 Watts RMS Car Audio Sub Audiopipe TXX-BDC4-15 | eBay
AudioPipe Sub-BDC4-15D2 15-Inch Sub Dual 2 Ohm 1400 W RMS Car Audio (2 Pack), 1 Piece - Harris Teeter
Amazon.com: Massive Audio Car Sound GTX122 1400 Watt Dual 2 Ohm 12 Inch Subwoofer (2 Pack) : Electronics
Amazon.com: BOSS Audio Systems AR100DVC 10 Inch Car Subwoofer - 1400 Watts Maximum Power, Dual 4 Ohm Voice Coil, Sold Individually : Everything Else