Pitch Raise

[dknabe@airmail.net]

Michael,

I think we're both saying the same thing, but maybe I said it wrong.

It appeared, from and earlier post that someone was taking your
istructions literally i.e. Tune the fundamental of A0 to 445 Hz. If that
was a joke, then  I apologize for trying to correct a joke. I brought
partials into the discussion to clarify.

The bit I added was to take your 445,444,443,442 - A4 and translate that
into cents sharp for each quadrant. If I stated it incorrectly, then I
stand corrected.

I like your quadrant concept and will try it on the next major pitch raise
I need to do.

Regards,
Doug


> Ah - but you must have missed the "smiley" (see below in the red print)
> that
> I put at the end of the question regarding if Michael knew how much
> tension
> would be on A-0 if tuned to 445 (as if it would ever have held that high a
> pitch... :-)  Just a friendly raz...
>
> John Fortiner
>
>
>
>   _____
>
> From: DKnabe [mailto:dknabe@airmail.net]
> Sent: Thursday, May 12, 2005 5:31 AM
> To: Pianotech
> 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.
>
> 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.
>
> 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:
>
> Hello John and List
>
> You asked:
>
>  Do you have any idea how much tension would be on A-0 when tuned to
> A-445??? :-)
>
> 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)
>
> ----- Original Message -----
>
> From: John Fortiner <mailto:JLFortiner@usadig.com>
>
> To: 'Michael <mailto:michael@gambles.fsnet.co.uk>  Gamble' ; 'tom
> <mailto:tomtuner@comcast.net>  driscoll' ; pianotech@ptg.org
>
> Sent: Thursday, May 12, 2005 1:05 AM
>
> Subject: RE: Pitch Raise
>
>
>
>
>
>
>
>
>   _____
>
>
> From: Michael Gamble [mailto:michael@gambles.fsnet.co.uk]
> 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=439 to A=445 or so. With that tune all the A's to the A=445
> -
> all 8 of them. Do you have any idea how much tension would be on A-0 when
> tuned to A-445??? :-)  Next tune the intermediate M3's i.e. all the C# and
> the F's. Now quarter of the piano is done.
>
> Next recalibrate the ETD to A=444. 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=443. Tune all the G#'s and then the
> intermediate M3's. (three-quarters of the way!)
>
> Last recalibrate the ETD to A=442. 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 -----
>
> From: tom driscoll <mailto:tomtuner@comcast.net>
>
> To: Pianotech <mailto:pianotech@ptg.org>
>
> Sent: Wednesday, May 11, 2005 5:34 PM
>
> Subject: Re: Pitch Raise
>
>
>
>
>
> ----- Original Message -----
>
> From: Michael <mailto:michael@gambles.fsnet.co.uk>  Gamble
>
> To: pianotech@ptg.org
>
> 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=440 and fine
> tune
> it in two hours. <SNIP>
>
>     Michael G.(UK)
>
>
>
>     Michael,
>
>     Could you elaborate on the Quadrant system ?
>
>     Thanks,
>
>     Tom Driscoll RPTired today.
>
>