I first met Dr. Douglas Hurlburt, the incredible force behind Dynamic Sounds Associates, in the mid-1990s when I moved to Southern Maryland to manage a chain of Fitness Centers. At that time, he was a member of my newly discovered local listening group, and his home was in Potomac, MD, some 15 miles NW of D.C. My first visit to his home with our listening group was more than merely memorable. Not only had he just finished a major revision of his KEF CS5 speakers, resulting in the publication of a paper in the Journal of the Audio Engineering Society…