I'm presently watching Part II after Part I and really enjoying the discussion, and information and knowledge that Danny is providing to the discussion with Jay. Will watch Part 3 next.
From the my personal perspective of someone who worked as a professional scientist (as a molecular biologist in Biotech) during my entire career, I find the information presented to be educational, informative, and valuable as it provides me knowledge, insight, and understanding with respect to effective loudspeaker design. Plus, I
really love all the science that Danny goes into and shares with us.

I just wanted to thank Danny for sharing his experience, knowledge and hard-won wisdom regarding loudspeaker design and engineering with us. It's very informative and helpful.
Thanks, Danny!
PS: I'll have to put up a post of how I used the statistical analysis program, JMP to analyze a DOE (
Design
Of
Experiments, a very powerful statistical analysis approach based on ANOVA) that I used to effectively, using in-room frequency response data, integrate my REL subwoofer into my my 2-channel stereo system.