Pitch Raise

[Michael Gamble]

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Please Doug, don't muddy the issue! I'm not talking about "partials" per =
se, but about notes on the piano. In tuning at a given pitch, every note =
you tune is relative to that pitch. So when I say tune "A" to 445 I mean =
the "A" you would expect to BE 440 but have gone past that to 445. Once =
you have established that then you're home and dry, Doug. .... aren't =
you?
Regards
Michael G.(UK)
  ----- Original Message -----=20
  From: DKnabe=20
  To: Pianotech=20
  Sent: Thursday, May 12, 2005 12:31 PM
  Subject: Re: Pitch Raise


  John and List,

  Surely Michael means:
       Tune the 16th partial of A0 to A-445;
       Tune the 8th partial of A1 to A-445; etc
       Tune the 4th partial of C#5 to the 5th partial of A-445
       etc, then
       Tune the 8th partial of G4 to the 7th partial of A-444
      etc.=20

  In other words, keep each string at approximately the correct pitch, =
but, for 1st pass,
      overpull by 20 cents those notes tuned to A-445;  i.e. all A's, =
C#'s, and F's
      overpull by 16 cents those notes tuned to A-444; i.e.  all G's, =
D#'s and B's
      overpull by 12 cents those notes tune to A-443;  i.e.   all G#'s, =
C's and E's
      overpull by  8 cents those notes tuned to A-442; i.e.   all F#'s, =
A#'s and D's.=20

  When you finish the first pass, those notes tuned 20 cents sharp will =
have fallen to being on-pitch. Since all the notes are now about right, =
fine tune it normally on the second pass.

  Regards,
  Doug Knabe
  Dallas
  Michael Gamble wrote:=20
    Hello John and List
    You asked:
     Do you have any idea how much tension would be on A-0 when tuned to =
A-445??? J=20
    Non! But it can't be much above design tension can it!
    Go for it - it works every time. The real "secret" is keeping the =
tension equal right across the frame.
    Talking about equal - anyone read "An Unequal Music" by Vikram Seth?
    Regards
    Michael G.(UK)=20
      ----- Original Message -----=20
      From: John Fortiner=20
      To: 'Michael Gamble' ; 'tom driscoll' ; pianotech@ptg.org=20
      Sent: Thursday, May 12, 2005 1:05 AM
      Subject: RE: Pitch Raise







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      From: Michael Gamble [mailto:michael@gambles.fsnet.co.uk]=20
      Sent: Wednesday, May 11, 2005 3:08 PM
      To: tom driscoll; pianotech@ptg.org
      Subject: Re: Pitch Raise



      Hello Tom and List

      I suppose it's not at all helpful to state the obvious - "it's in =
Archives"! No? Well then this is the way to do it:

      Have a cheapo ETD - you know the things - get it from a guitar =
shop. They usually have A=3D439 to A=3D445 or so. With that tune all the =
A's to the A=3D445 - all 8 of them. Do you have any idea how much =
tension would be on A-0 when tuned to A-445??? J  Next tune the =
intermediate M3's i.e. all the C# and the F's. Now quarter of the piano =
is done.=20

      Next recalibrate the ETD to A=3D444. Now tune all the G's to 444 =
pitch and follow that with their intermediate M3's - i.e. all the D#'s =
and all the B's. Now you're half-way!

      Next recalibrate the ETD to A=3D443. Tune all the G#'s and then =
the intermediate M3's. (three-quarters of the way!)

      Last recalibrate the ETD to A=3D442. Tune all the F#'s and then =
the intermediate M3's

      And you're done! Sounds like a neat system that I'm going to have =
to try.

      Now fine tune.

      Note this... I ALWAYS DETUNE EACH STRING SLIGHTLY BEFORE PUTTING =
UP THE TENSION. This breaks the bonding at the pressure bar or capo. =
Even use a touch of de-oxidising fluid at those points before you start.

      Regards from a dark Sussex Village

      Michael G.(UK)

        ----- Original Message ----- =20

        From: tom driscoll=20

        To: Pianotech=20

        Sent: Wednesday, May 11, 2005 5:34 PM

        Subject: Re: Pitch Raise





          ----- Original Message -----=20

          From: Michael Gamble=20

          To: pianotech@ptg.org=20

          Sent: Wednesday, May 11, 2005 9:54 AM

          Subject: Pitch Raise



          Hello List

          . <SNIP>So I used my "Quadrant System" to bring it up to =
A=3D440 and fine tune it in two hours. <SNIP>

              Michael G.(UK)

             =20

              Michael,

              Could you elaborate on the Quadrant system ?

              Thanks,

              Tom Driscoll RPTired today.

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