I was at an event at Sunny's in Covina, CA where D'Agostino was demoing his new line with Wilson Darth Vader speakers (about 4 years ago). He described how he creates his products. He made it sound like it was all based on hearing and trial and error. He never mentioned taking measurements. Maybe an oversight on his part but I was turned off on the line based on his description of his design process,.
Speakers did sound good on the $200K+ that day,
Speakers did sound good on the $200K+ that day,