Does altitude change the sound of speakers??

There’s something referred to as, "acoustic impedence", which affects, "sound pressure", and varies with air pressure.      Given your elevation change amounts to less than a mile; it’s highly unlikely you’ll notice anything.             Not that big a change, in air pressure. https://www.animations.physics.unsw.edu.au/jw/sound-impedance-intensity.htm        Cleveland is a nice place to be FROM, isn’t it?

They should always sound better when you're high!!

I like D_S answer.. hee hee.

The air is thinner, thing are bound to be a little faster and with less pressure on the old ear drum, ay? But give it a little time, just like you for the altitude change.. Interesting though.. Humidity is right in there with SQ to...It all plays into "The sound", ay?

Would it actually be a lower spl with the same watts or not? I gotta think on that one a bit. $ for $ would you get the same SPL at sea level as one, two, or what about 4 miles up. Everest? Can you hear anything up there. 
With no air, no pressure, little air, little pressure, Right?

Regards

That is why EBM live's in a Penthouse. Ultimate SQ!!! 👍

So if the rooms are not exactly the same, of course there would be a difference in sound.