Does altitude change the sound of speakers??

Not nearly as much as attitude.

no noticeable difference between 10' MSL & 6,247' MSL.  It was the -15' SL that produced some distortion.  

@marklevinson

Sorry my friend, if you thought you could ask a question here, you were mistaken. You just opened yourself to be the fresh meat of the day.

Don’t take it personally, it happens all the time. Goober Magoos abound, or Karens, whatever your vernacular.

Ha, later pigs!

Yes we have the same problem with motorcycles when we are at the track.
The track owner have on him strict requirements on max dB of noise our motorcycles are allowed to make.
The track is of course in a fixed location but the dB measurements reading varying with the air pressure. So the denser the air pressure is the easier the sound propagate through air.

geofkait,
are you sure it isn’t " ..in space no one can hear you eating ice cream" ?