Estonia 6'3" Grand

[Scott Nelson]

Hi Greg,
   
  I did level the strings in the high treble  (yes, they definitely can be out of level) very carefully as I usually do in piano prep. The tonal problems that occur with unlevel strings seem to be more in the nature of lack of clarity or power rather than an audible beat rate, at least to my ear.
   
  I think I will experiment more with Ron's advice as regards the screwdriver test and mass loading on the next one I run across.
   
  Thanks for the suggestion, though.
   
  Scott Nelson

Greg Newell <gnewell at ameritech.net> wrote:
                Scott, 
                  Is it possible that these strings could be slightly out of phase with each other. Can strings be that much out of level in the high treble?
   
  Greg Newell
  Greg's Piano Forté
  www.gregspianoforte.com
  216-226-3791 (office)
  216-470-8634 (mobile)
   
    From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Scott Nelson
Sent: Monday, May 12, 2008 10:51 PM
To: Pianotech List
Subject: Re: Estonia 6'3" Grand

   
    Hi Don,

     

    I have had the same issues on a number of Estonias recently-  On one, I actually removed the strings in the top section, pulled the bridge pins, renotched the bridge, inserted new pins (with epoxy) and restrung the section. It was a bear notching with the plate in the piano, but it can be done. 

     

    Unfortunately there was not a great deal of improvement-still very false. I did not think to mass load the bridge to lower the driven resonant frequency. Perhaps that would have made a difference. The original pins coming out of the bridge were very tight. The beating was at times very fast, especially up near D7 and higher. 

     

    The front duplex is movable on the more recent ones but if you shorten them it tends to reduce the angle from the capo to the aliquot (because that part of the plate angles downward). Nevertheless, de-tuning them does take a lot of noise out of that area. I have had one customer that pointed out an "unfocussed" sound on every note where the front duplex was longest.

     

     Any ideas on what else can be done for the false beating? 

     

    Scott Nelson, RPT

Don <pianotuna at yahoo.com> wrote:

    Hi all,

Back from my trip into the wilds of Saskatchewan to tune an Estonia 6'3"
grand. Nice piano but the top register after the treble break had lots of
"false beats". Turns out it was the front scaling tuning that was close
enough to cause the warbles. I muted it while I tuned and then unmuted it
"for the richness of the sound".

Is the front duplex tuneable on these? Or only the rear one?

Temporary muting of the duplex made tuning a pleasure. I hope this tip
helps someone else out sometime.

Regards,
Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T.
Non calor sed umor est qui nobis incommodat

mailto:pianotuna at yahoo.com http://us.geocities.com/drpt1948/

3004 Grant Rd. REGINA, SK, S4S 5G7
306-539-0716 or 1-888-29t-uner
   


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