I've heard gradual changes in speakers and then WHAMMO !!! It was as if another bass unit was added to the cabinet and a sheet was lifted off of the speakers. I've had this happen on two different occasions. Both times, i had been sitting and listening for several hours on end and then it was like "magic" happened in the middle of a recording. Can't explain it, nor do i worry about it. It will happen, so just count on it. While i don't recommend "throttling" the speakers to speed up the process, the more signal that you feed them, the sooner it will happen. Sean
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