The Decware WO32 - High Performance HORN Subwoofer
High Spl PRO Audio 2X18' Horn Loaded 1600W Subwoofer for Living Event and Show - China Professional Subwoofer and Professional Speakers price | Made-in-China.com
dBTechnologies DVA-KS10 Semi-Horn Loaded Subwoofer – Sonic Circus
Pioneer Pro Audio XY-218HS Dual 18-Inch Horn-Loaded Subwoofer - AVLgear.com