[CAUT] pitch under the lights

[Alan McCoy]

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Your basic house cat or two, perhaps. They do a great job of keeping us warm
at night.

 ;-)

Alan



From: David Ilvedson <ilvey@sbcglobal.net>
Reply-To: <ilvey@sbcglobal.net>, "College and University Technicians
<caut@ptg.org>" <caut@ptg.org>
Date: Tue, 26 Apr 2005 09:05:40 -0700
To: <caut@ptg.org>
Subject: RE: [CAUT] pitch under the lights

So what we really need is a plate heater, something that will let the plate
and strings warm evenly...hmm....?

David I.





Original message
From: Don Mannino 
To: College and University Technicians
Received: Tue, 26 Apr 2005 08:00:10 -0700
Subject: RE: [CAUT] pitch under the lights

Barbara Richmond  wrote
 
> PS  How long does it take a hot piano to go back up in pitch?  (Not a joke,
just a question.) 
 
As Laurence wrote, it will slowly settle back.  What happens with
temperature changes is that at first the strings warm up and go flat, then
gradually the plate warms up which makes the pitch go sharp a little.  If
you close up the piano during the opening parts of the concert, it will
drift a little, but the plate changes slowly.  The strings will then warm up
quickly once the piano is in place under the lights for the performance.
 
DM



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