TNE212D Dual 12" TERMINATOR Series 800-Watt Peak Power Subwoofer Enclosure | MTX - Serious About Sound®
Amazon.com: Planet Audio AC12D 12 inch 1800W Car Audio Subwoofer with Dual 4-Ohm Voice Coil and AC15001M 1500W MONOBLOCK Car Audio Amplifier : Electronics
Memphis PRXA600.1 Power Reference Series Mono Subwoofer Amplifier and Two Alpine W12S4 12-inch Single 4 Ohm Subwoofers - Creative Audio