I have to say I skimmed it and I agree with most of it.
In particular, the idea that crossover integration for the average audiophile is way too hard. Also this line:
Absolutely true for many speakers. Too many audiophiles try to be purists, and crossover as low as they can but in fact 80 Hz is a wonderful sounding crossover point by comparison.
I wrote a little about this here:
https://speakermakersjourney.blogspot.com/2020/04/how-to-not-buy-subwoofer.html
and here:
https://speakermakersjourney.blogspot.com/2021/03/how-to-equalize-subwoofer.html
In particular, the idea that crossover integration for the average audiophile is way too hard. Also this line:
You might be better served crossing them over at 75-80 Hz in order to free up their available excursion for midbass and higher frequencies.
Absolutely true for many speakers. Too many audiophiles try to be purists, and crossover as low as they can but in fact 80 Hz is a wonderful sounding crossover point by comparison.
I wrote a little about this here:
https://speakermakersjourney.blogspot.com/2020/04/how-to-not-buy-subwoofer.html
and here:
https://speakermakersjourney.blogspot.com/2021/03/how-to-equalize-subwoofer.html