Its a very interesting read but because of my loss of my wife and age (I hate admitting that last part) it takes me multiple reads to retain the points being made in the book. I also only read a couple of sections at a time and let my mind  process what I've read  for a few days so that I can retain and understand more fully what it is I read.
Thinks I've learned so far..
The phantom center  channel that we hear in rock, pop, and jazz recordings are often sweetened by the recording engineer to lessen the comb filtering  and the  corresponding reduction of amplitude as a result in the vicinity of  2KHz.  This comb filtering would also cause a shift in timbre  and these effects are exacerbated in rooms with low first reflection points  or narrow dispersion loudspeakers even though these speakers may have uniform off axes response.  Speakers with wide dispersion characteristics, even those with non uniform off axes response are preferred to speakers  with narrow dispersion and uniform off axes response.
Auditioning  1 speaker  in a speaker pair reveals more subjective information about that model's performance than it does as a stereo pair.
That's as far as I got today.  
