Paywall. (Although I was already aware of the common usage in medieval manuscripts.)Medieval killer bunnies and poop jokes.
That's why I attached a Pdf of the article.Paywall. (Although I was already aware of the common usage in medieval manuscripts.)
Ya, your right, it's slightly over 3 and 1/2 inches. Still, it is a pretty big difference from the standard 4" size on most acoustics. My 2006 F-50 is slightly over 4" had to use a little duct tape around the feedback buster to make it tight enough not to fall out. Whew!!!!!Yeah, 92mm is probably metric equivalent for a soundhole originally designed as 3 5/8".
This probably the right thread to ask this very infantile question...why a sound hole cover?
Is it to reduce feedback on stage?