Although most people know Yamaha as a manufacturer of motor bikes and possibly electronics its origins are in manufacturing music instruments. From https://en.

Although most people know Yamaha as a manufacturer of motor bikes and possibly electronics its origins are in manufacturing music instruments. From https://en.wikipedia.org/wiki/Yamaha_Corporation https://en.wikipedia.org/wiki/Yamaha_Corporation "Yamaha was established in 1887 as a piano and reed organ manufacturer by Torakusu Yamaha as Nippon Gakki Company, Limited (日本楽器製造株式会社 Nippon Gakki Seizō Kabushiki Kaisha?) (literally Japan Musical Instrument Manufacturing Corporation) in Hamamatsu, Shizuoka prefecture and was incorporated on October 12, 1897. The company's origins as a musical instrument manufacturer are still reflected today in the group's logo—a trio of interlocking tuning forks" Today it's the world's largest manufacturer of music instruments. The range covers just about anything on which you can play a tune. Branching into motorcycles and electronics happened only after WWII. So, yeah, they probably know a thing or two about acoustics. Edit : Better legibility