It’s more difficult as you have to rely on a central octave and tune outward. First tune one string in the A4 unison to 440 and then count the bps difference with the other strings in that unison. If the untuned string is, say 10 bps flat then tune the A4 3 bps sharp. Tune one string only in the temperament octave from the sharp A4 and tune outward one string in each unison only. That will cause less shift in the temperament octave as you tune in any one direction first. Then go through and rough in the unisons very quickly. You may need to do a second rough pass. It’s not as accurate as an ETD because different sections of the piano will be out different amounts. Typically, the bass will not be out as much as the low tenor, for example. You can try and compensate for this as you go. I agree, this is where an ETD really pays for itself. David Love www.davidlovepianos.com From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Duaine & Laura Hechler Sent: Thursday, January 01, 2009 6:41 PM To: pianotech at ptg.org Subject: Re: [pianotech] Aural Tuning, a third flat That's another problem with aural tuning - what is it exactly of 30% overpull - meaning how do you do that ? I know, at least, Cybertuner automatically calculates and adds overpull. Since 99% of my customers' tuning are pitch raises in the first place - that's why an ETD is, in my eyes, absolutely necessary. Duaine David Love wrote: The beat rates would be slower. But why not just pull it beyond pitch by a factor of 25% (30% in the treble) so it falls back about where it should be by the time you’re done? Afraid of strings breaking? If they’re going to break, they’ll break anyway. First pass to get it close, second pass if you missed your mark doing it aurally, third pass to fine tune (charge accordingly) and then come back in 3-4 months to tune it again (though it will likely be 3 years if they let it go this long the last time). I don’t believe in creeping up on the pitch. Just get it there, do your best to fine tune it on the second pass and schedule the next appointment sooner than the last one. This is where an ETD comes in handy for accurate and fast pitch raises so the fine tuning has less distance to travel. David Love www.davidlovepianos.com From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Greg Livingston Sent: Thursday, January 01, 2009 5:47 PM To: Pianotech list Subject: [pianotech] Aural Tuning, a third flat Dear Friends, We have been told that the beat rate for A3-C#4 is about 9 bps; F3-A3 is about 7 bps; do these beat rates only apply when A4 is close to 440? If A3 on a neglected piano is closer to F#, are those beat rates the same? I recently tuned the most out-of-tune Acrosonic I've ever seen in 22 years of tuning. I did my best and the piano sounds better than I'm sure it's sounded in years, but I didn't dare get the A anywhere near my 435 fork. I decided just to raise A4 a bit and tune it from that point. Of course, if it slipped, it would throw everything off, but I had no other reference point. I will tune it again in a few months. Can I use those traditional beat rates when the A is somewhere around 420? Just wondering... ___________________________________________________ Gregory P. Livingston, Piano Tuning and Service 781-237-9178 Piano Technicians Guild, associate member (Boston chapter) * * * Always remember September 11, 2001 * * * _____ Life on your PC is safer, easier, and more enjoyable with Windows Vista®. See how <http://clk.atdmt.com/MRT/go/127032870/direct/01/> -- Duaine Hechler Piano, Player Piano, Pump Organ Tuning, Servicing & Rebuilding Reed Organ Society Member Florissant, MO 63034 (314) 838-5587 dahechler at charter.net www.hechlerpianoandorgan.com -- Home & Business user of Linux - 10 years -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech_ptg.org/attachments/20090101/f9ee1723/attachment-0001.html>
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