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In Reply to: Interesting point, pictureguy ... posted by andyr on September 22, 2012 at 01:15:01:
Not as far as I know. The quasi ribbon foil has been in use for many years -- it was first introduced in the midrange of the 20.1 -- and as far as I know, it hasn't deteriorated, though the adhesives used until ten years ago have. However, I haven't asked. In the case of the ribbons, the word is that they will eventually develop metal fatigue and fail if played at very high levels, but will last indefinitely if not. Judging by reports of levels and ribbon replacements on the forums, for most audiophiles, it will be forever. But Satie's would be at risk (though AFAIK, his haven't ever failed).
You could figure out how the maximum deflection of the ribbons compares to that of the midrange and bass ribbons by looking at frequency and area, but I'm not sure the comparison would tell you anything, since the ribbons are pleated and tacked down. I gather from what people report that failures tend to occur at the points where they're attached and experience the most stress, though again, it's not something I've confirmed.
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- RE: Interesting point, pictureguy ... - josh358 13:16:01 09/22/12 (0)
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