[pianotech] Fwd: soundboard grain angle vs "faux"stiffness

[Dale Erwin]

zzzzactly, and it is what gives each piano its own unique voice.  This is what is great about wood over carbon fiber boards...the outcome will vary uniquely.
  I for one don't want to build pianos that are....Carbon copy's.  

 

 

Dale S. Erwin
www.Erwinspiano.com
209-577-8397

 

 

-----Original Message-----
From: David Love <davidlovepianos at comcast.net>
To: pianotech at ptg.org
Sent: Thu, Jul 15, 2010 6:29 am
Subject: Re: [pianotech] Fwd:  soundboard grain angle  vs "faux"stiffness


The question about whether the pianos can be voiced to sound the same will 

depend on whether the two assemblies have the same or similar impedance 
characteristics. My point earlier was that there's no reason that I can see that 

the same characteristics can't be achieved using CC or RC&S methods.  Though I 

happen to think that there are advantages to using the RC&s methods (which I've 

already stated).. The degree to which the impedance characteristics vary between 

two designs will make it more or less difficult (if not impossible)to achieve 

the same voicing outcome.





David Love

www.davidlovepianos.com



-----Original Message-----

From: Dale Erwin <erwinspiano at aol.com>

Sender: pianotech-bounces at ptg.org

Date: Thu, 15 Jul 2010 01:23:19 

To: <pianotech at ptg.org>

Reply-To: pianotech at ptg.org

Subject: [pianotech] Fwd:  soundboard grain angle  vs "faux"stiffness







Hey Jim

  Did the attached pictures help answer any questions. By the way both Bs have 

the New Weickert felt hammers.  David brought up a good point about voicing.

 IMO This pianos can be voiced a variety of ways. But the two pianos mentioned 

although they are both Bs but built differently...I truly wonder if they could 

be voiced to be identical or even similar.  Any way Davids soundboard resonance 

reduction  thought is apparent in both pianos.  Yes still much to learn, explore 

and have fun on the journey.

  The big thrill is to hear music coming out of a new re-whatevered box. Do I 

hear a cheer?







            

    

          

            

               It's dark, powerful and                    voluminous 

          

        

    are you by chance a wine taster by trade <G>  no

     my tonal envelope is power with out noise. Or as Starr Taylor says" Without 

the strident clang that permeates the piano tonal landscape of today"  

Predominant fundamental balanced by upper partial clarity but no clang and 

little percussion on hammer impact sound.  I seem to be allergic to it

can I take this to mean prominent fundamental and lower partials    with a 

reduced prominence of the uppers?

    

    

          

            

The design spec: is a grain angle that                    follows the long 

bridge (approx 30 degrees off the                    long side)

          

        

    

    hmm.  Yes for me I've always measured it off the spine. Easier. Stwy models 

S,M,L,O are 45 degrees,(some )s in the 30's) and A's thru Ds are 40 degrees with 

some anomalies

    

            

          

,serious                  curved cut-off bar,

                  

                

        

      where does the cutoff end in relation to the tenor    ribs? See pictures

    

    Jim I

    

    





 

 








 
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