REV 410 Black V2 | Wet Sounds Revolution Series Dual 10" Black Tower Speakerhe Revolution Series uses our proprietary REV TEC technology. Unlike most conventional designs, REV TEC technology provides remarkable volume and amazing full range sound quality on axis and off axis at long distances. Extensive acoustic testing has confirmed these speakers ability to project volume at 80 feet and beyond without any loss of detail or information. Not only does the Revolution series achieve volume and sound quality at a minimum of 80