Good luck with this one Mark.
You pretty much know the story. Hsu is using XBL2 technology in the HO series but not in their other offerings. SVS has been using TC sounds but is now bringing driver design in-house, apparently starting with the 12.3 driver.
AFAIK, Velodyne uses proprietary drivers in their high end models, and I would not be surprised if all their drivers are proprietary as they have been in business for about 20 years, and Bruce Hall and his team know an awful lot about drivers and other related matters.
For more information on Velodyne, why don't you post a question about the origin of Velodyne drivers in the Official Velodyne Thread?
You pretty much know the story. Hsu is using XBL2 technology in the HO series but not in their other offerings. SVS has been using TC sounds but is now bringing driver design in-house, apparently starting with the 12.3 driver.
AFAIK, Velodyne uses proprietary drivers in their high end models, and I would not be surprised if all their drivers are proprietary as they have been in business for about 20 years, and Bruce Hall and his team know an awful lot about drivers and other related matters.
For more information on Velodyne, why don't you post a question about the origin of Velodyne drivers in the Official Velodyne Thread?