The ambient temp can effect speaker performance. I experienced this first hand with a pair of Monitor Audio Studio 20s. Below about 70° the sound would lose its openess. It could be due to the metal cones in the Monitor Audio, but I haven't noticed the effect with other metal cone speakers I've had.
I could easily see how the cold could effect a listeners perceptive abilities both positively or negatively.
I could easily see how the cold could effect a listeners perceptive abilities both positively or negatively.