[CAUT] back duplex

[Don]

Hi Lance,

I did not understand that the piano had not been replaced. Shame on the
store! I do hope you left the damppchaser installed!

My feeling is that duplexes act like a "band pass filter" absorbing
unwanted frequencies. The duplexes are on the plate, so unless the plate
functions as a "sound board" the energy is lost to the piano. But then
perhaps plates *do* act as a "higher frequency" soundboard?

At 03:53 PM 18/11/2004 -0600, you wrote:
>Thanks Ron, 
>Isn't the plate just too low or aliquot too low?  There was crown and
>bearing, just not enough on the aliquot.  I imagine that shimming the
>aliquot and controlling humidity would have been the easiest fix.  My
>concern in trying to address it myself on a new piano that probably
>still had RH instability was going too far and the string then climbing
>up on the bridge cap/pins, making me then responsible for a new problem.
>
>
>If anyone sees 7 footers out there with this, just remember this post,
>because the tech with more experience with this brand than I, knew right
>off where to look.  
>
>Lance Lafargue, RPT
>LAFARGUE PIANOS
>New Orleans Chapter, PTG
>985.72P.IANO
>llafargue@charter.net
>www.lafarguepianos.com
> 
> 
>
>-----Original Message-----
>From: caut-bounces@ptg.org [mailto:caut-bounces@ptg.org] On Behalf Of
>Ron Nossaman
>Sent: Thursday, November 18, 2004 8:35 AM
>To: College and University Technicians
>Subject: RE: [CAUT] back duplex
>
>
>>I have not been back, I'm a problem, so don't know the bearing, crown, 
>>sound, etc.  Just wanted to know what others thought of the 
>>solution.  Like, if your BMW's headlights flicker, just unplug 
>>them.  Mary, I thought of your solution, but I go back to.. After
>$28,000, 
>>should the customer be expected to accept this and what will the piano 
>>"do" later? Also, the maker says it ain't right, the dealer just
>doesn't 
>>want to pay moving expenses, etc.  The dealer is several hours away,
>out 
>>of state.  Thanks to all.
>>
>>Lance Lafargue, RPT
>
>
>Buzzing on the aliquot is the symptom, and it seems to me that someone 
>ought to be trying to discover the cause instead of just - unplugging
>the 
>lights. I agree that braiding off the back scale isn't much of a fix for
>
>even a $3,999.95 flowerpot stand that shouldn't have gotten out of the 
>factory in that condition in the first place, and the customer shouldn't
>
>put up with it. That's why I asked about the bearing and crown. I'm 
>interested in knowing how the piano was set up to do this, because 
>something is VERY wrong, and having details is good ammunition when
>you're 
>talking to manufacturers and dealers.
>
>Ron N
>
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>
>
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>
>

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

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