Any experience using 8 ohm taps for 16 ohm speakers?

another tidbit found

" I had this conversation with Robin Trower about 5 years ago in the Marshall Theater. He told me he likes to run his amps on 8 ohms into a 16 ohm cab. He then played some while I switched the selector on the back of the amp between 16 and 8 (not while he was playing of course!). He then declared, "there's not much in it really". In reality it can depend on the acoustics of the room/stage on the night etc. etc. whether it sounds better or not.

http://blog.hughes-and-kettner.com/ohm-cooking-101-understanding-amps-speakers-and-impedance/

Case 1: running a 16 ohm speaker with an 8 ohm amp output

With this combination, the voltage at the speaker output will rise, while the current will almost halve. The power will drop, although you probably won’t notice it too much, as this combination will likely increase the mids in your tone. So long as you don’t overdo it – make it a rule of thumb not to connect a speaker with more than double the output impedance of that of the amp – this method can be quite useful, as you can effectively boost the mids in a cab that might otherwise be lacking in this department.

found an old thread, 2017, from this site

https://forum.audiogon.com/discussions/is-it-ok-to-use-an-8-ohm-tubed-amp-to-power-16-ohm-speakers