MLA LF18X451 18” 3000 Watts Peak! 8 ohms just the BEST!! | eBay
JBL Club A600 High Performance Compact Class D Car Audio Mono Subwoofer Amplifier Bundle Combo with Infinity Reference 1000S 10" 800 Watt Peak Power Shallow Mount Car Audio Subwoofer - Road Entertainment
JBL EON718S 1500-watt 18-inch Powered PA Subwoofer | Sweetwater
18 Inch Car Subwoofer 3000 Watt RMS 1.8+1.8 Ohm 4" Voice Coil | eBay