@mofojo I forgot to mention.
Sometime prior to the Optimum's release the company was becoming more aware of the importance of room integration and detailed placement experimentation as suggested in the manuals Placement section on page 2 prior to calibration.
Adopted with the DD series, location experimentation can be eliminated by simply placing the sub at the listening position. While playing the low frequency calibration tones and slowly walking around the rooms wall boundaries and listening for the loudest standing wave bass modes to position the sub in.
Once positioned far less demand will be placed on the Velodyne processing resulting in greater presentation satisfaction and flexibility. All the best.