It is worth noting that the performance of an electrical transducer (driver) will vary with temperature. Depending on cone material, there may be a difference in cone performance based on temperature. Temperature-induced phenomina are to a great extent what establishes a noise floor for audio equipment (only audiable when signifigant gain is applied).
That said: None of these should really meet minimum thresholds for hearing, and most such warming occurs within minutes.
There is such a thing as driver (particularly surround) break-in: but again this occurs long before a driver arrives at your house as part of in-factory testing... it takes minutes at most.
What does change is your brain. Your perceptions of something change as you continue to be exposed to it. Manufacturers know this and so discuss "break in".