MWT-65T Marine-Grade 6.5? 500-Watt Wake Tower Enclosure By admin in mwt-65t December 29, 2023 This pair of Titanium Marine-Grade 6-1/2 in. 500-Watt Wake Tower Speakers from Power Acoustik are housed in 100% waterproof enclosures. The speaker system is made of high-density ABS construction with UV coating.