This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment 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 -------------------------------------------------------------------------= - 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. ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/e1/74/3e/a1/attachment.htm ---------------------- multipart/alternative attachment--
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