I just finished watching that Gene, it was excellent. It is a discussion that defintely needs to be continued.
I thought the discussion on power response was important. I have tried to press the imprtance of this on these forums over the years.
However in my view, it is imprtant to look at the power response over different defined frequency bands, and the power required to produce it. For one thing the transition frequency is going to require more power from the amp below that freqeuncy. Not only that, but the speaker has to handle that power without a redction in the in room spl. due to the speaker reaching its electrical or mechanical limits.
This inforamtion would be helpful for consumers choosing speakers better suited to their listening preferences.
On my DAW the metering of WaveLab shows moment to moment where the power is required, across he whole audible bandwidth. This varies signifcantly by the music genre being played.
So I think there needs to be more focused discusion on this topic. Many speakers, especially three ways, with single small midrange drivers, have a very deficinet mid band power response for many genre's of music, especially in the classical domain, and that especially applies to choral music.
The impedance issue also needs to be discussed further. I'm glad they stated that there are virtually no four ohm speakers, and precious few six ohm speakers. The vast majority of speakers are four ohm. All members would do well to assume their speakers are four ohm, unless there are measurements to the contrary.
That is why receiver manufacturers not specifying four ohm performance is a disgrace and needs to stop.
