Sagging Voice Coils?


I was just reading a thread on AA where someone mentioned that one should rotate bass drivers to prevent the voice coils from sagging. It sounds like a problem for geriatric speakers, but is there any truth to this?
bojack
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VMPS(still in business)used to weight their sub drivers in the old days and recommended they be rotated occasionally. I don't know of any other manufacturer that did this.
That's nice you are an audio club. I'm not in an audio club, however, I have experienced sagging woofers. For all I know YOU might be an urban legend.