+1 @pwerahera I do the same thing. I have a 70 minute disc of pink noise at all frequencies that I let run for half an hour or so at high volume. Great for the entire system.
Do speakers take time to warm up?
For example, if my stereo is on and has been on for weeks, and then I connect speakers that have been sitting idle for a few weeks, do the speakers sound better after an hour of being played? Whats going on? Is it the caps in the crossover, the drivers, the ferrofluid in the tweeters? All of the above?