FAQ What is the official website of Velodyne Acoustics? The official website of Velodyne Acoustics is www.velodyne.co.Where can I find the SC-IF/IC user manual? The user manual for SC-IF/IC speakers can be found on this page.Is there a cautionary notice for using SC-IF/IC speakers? Yes, there is a cautionary notice provided in the manual for SC-IF/IC speakers.