Hmmm......I'd not heard that in regards to classicals before, but cedar topped guitars in general seem to have that possibility, and since many classicals are cedar topped, I suppose it could be a real phenomenon.
I'd assumed (maybe wrongly) that the less tension on the strings would keep that from happening as much on classicals.
I had an '89 Taylor 512c that I probably played almost 1000 gigs with, and when I sold it in '03, it certainly didn't have the sparkle it once had. That one had a Sitka top too
