Do you listen with mouth open response.
Interesting supposition…… “asking the ageing mouth breathers”
It would logically be OK to listen with mouth open as long as you have taken this into account. It would of course have to have passed the test as part of your room treatments portfolio.
Big mouths can dramatically increase the size of your available listening space. Tongue-in-cheek could possibly tweak the results however.
Sorry l couldn’t resist this…… It is purely for humour and light sarcasm for what can for some be a very serious subject. @tomcarr (like myself) l would think does not fall into the seriously minded category.
Did l just say that this is “a very serious subject?”