Why big port diameter?

[Jay]

Originally posted by tinitus
Well, I judge a port size by its length, and some common sense BTW....

Isn’t it nice if we could have something like: “the optimum port size is such that when L to S ratio follows the golden ratio” LOL.

Originally posted by tinitus
Interesting "port" on Troels latest and highly tweaked design. I wonder if we really know the secrets of a ported design

I believe there are still a lot of things in it…

 

[tinitus]

Even a complex design as a violin can be measured by the "golden ratio" - some even believe its THE key to perfect balance

 

[opp]

And what is balanced SPL? Can we hear a few dB differences?

E.g. 2dB extra in the 30 to 50Hz band on a small bookshelf can make a huge difference - IMO.