Anyone who can't get the DD xover set to their satisfaction should call Velodyne's tech support/customer service operation in Phoenix. As for test equipment, the integrated frequency analyzer dumped to a TV screen reveals exactly what's happening. Peter, all the setup functions are done digitally through an attached monitor-- not manually. Also the unit can be upgraded to current 2.0 software via a PC/internet interface. The user manual can be downloaded from Velodyne's web site.
Dave
Dave