Warm up time for record playing

I’m glad to hear all the corroborating responses to my observations.
As is said above, It’s not mutually exclusive that physiology and warm up time are both possibilities.

@frogman I think you've got it right, music needs to play through to "warm" everything up and 2 sides of an LP seem about right to me for getting up to proper listening speed, i have the same experience with a Musical Fidelity A5 CDP ....its like partway through the first CD of a session it sounds so much better ..

@rvpiano I hear the same thing. Count me in the camp of "warm" people as opposed to the "stone cold" ones. @mijostyn your attempt to "rationalize" the phenomenon and discount everyone else experiences is an insult to science.

@mijostyn,

My suggestion is from a purely 'warming up your ears with sound' standpoint.
Not which medium sounds better, but if there is the same difference in sound the op is hearing from his turntable after that time, or if there is not since his ears are already warmed up pre record playing.

My TT sounds best when it’s been running for about an hour and air compressor and motor has stabilized temperature and pressure wise, that’s when speed is very steady too. My SS phono needs about 30 min, the tube pre needs 45 min to sound it’s best, cartridge about one LP side. I try to stick to one arm at a time for this reason. I try to play thin record together as my LT arm is set to play these best. The pivoted arm is less sensitive and will take 180g record and thicker. Yes i am crazy !