Hey Kodiak
His book is titled “Sound Reproduction” The Acoustics and Psychoacoustics of Loudspeakers and Rooms. Third Edition. It is, in my opinion technical. But readable. But, rather than spend $50+ for a copy maybe watching Floyd Tooles video on this could be a reasonable alternative?
Floyd Toole Sound Reproduction -Art-Science/Opinions and Facts. Just a forewarning, it is long.
Cheers,
Jeff