[pianotech] Double Octave Stretch

[David Ilvedson]

You mean 12th?

David Ilvedson, RPT
Pacifica, CA  94044

----- Original message ----------------------------------------
From: "Piano Boutique" <pianoboutique at comcast.net>
To: pianotech at ptg.org
Received: 2/10/2010 5:54:45 PM
Subject: Re: [pianotech] Double Octave Stretch


>Mark,

>Try tuning it sharp enough so that your fifth, or 17'th is smooth.

>William



>  ----- Original Message ----- 
>  From: Mark & Janine Davis 
>  To: pianotech at ptg.org 
>  Sent: Tuesday, February 09, 2010 2:04 PM
>  Subject: Re: [pianotech] Double Octave Stretch


>  Hello David



>  Thank you for confirming that the piano is out of tune.

>  Could you please tell me what the maximum demand/stretch for double octaves is?  
>I have an idea that it is anywhere from .5 bps - 1.5 bps, but from reading the 
>archives I am thinking that some folks stretch their tunings beyond 1.5bps for 
>concert grands in very big halls? 

>  Thank you, Mark.