Soundboard Crown measurement and evaluation

[John Alsina]

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Ron,

You recent post describes re-crowning the soundboard in a relatively new =
instrument.
Would this technique be worth considering for older instruments?
For example: an 80-year-old compression crowned instrument whose =
soundboard is visually=20
in good condition but flat in the mid-treble, resulting in short sustain =
in that range.
On the one hand, the SB might already be crushed and "dead."
On the other hand, if new built-up ribs could provide sufficient =
springiness by themselves,
the soundboard would only have to serve as a diaphragm, so perhaps even =
a dead SB would do.
Your thoughts?

JCA
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