Warm up time for record playing

**** Why do you think they have warm up bands at concerts! ****

I was not doubting your comments about physiology at all and I made that clear; only the degree to which it might be a factor. You lost me with this one, ‘though. I seriously doubt concert promoters are concerned with the “physiology of hearing“ other than the deluded notion prevalent these days that louder is always better. Building anticipation, giving the audience their money’s worth, or even setting a lower (not always) bar for the main act with a warm up band?  Sure. However, I have known a few and not once has the issue come up. Moreover, where’s the physiological “warming up” when attending a live orchestral concert, for instance? Does the third movement of a symphony always sound (!) better than the first. Not a chance.

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.