Voicing question

[Jim Coleman, Sr.]

Just recently (a week ago) I installed a "wet" humidistat which centers
humiditiy at 48% RH instead of the usual 42%. My customer who has an
unusually fine Yamaha CF about 20 years old but rebuilt is always looking
for more power and carrying power. To our amazement the piano went out 
of tune but the carrying power increased another major amount. My customer
had suspected that the tone got better when we had rainy seasons. I think
I'm convinced now. The customer momentarily is ecstatic.

What do some others of you think who have experienced this kind of change?

My present thinking is that the board has pushed up a little stronger
against the strings and that the impedance between strings and board has
changed enough so that there is more resistance of the board to the 
energy of the string's downward pressure and that this causes the duration
to increase, but I can't understand the greater power also.

Jim Coleman, Sr.