18 Sound 18LW2600 18" Woofer 3000W 8-Ohm Designed For Use In Vented Enclosures | eBay
18 Sound 18LW2420 Subwoofer Speakerr
Eighteen Sound - Professional loudspeakers
18-in next generation high performance subwoofer, specifically designed for high SPL very low frequency applications in either a reflex, bandpass or horn loaded configuration - Walmart.com