[pianotech] BB Mason and Tenor Cross over

[erwinspiano at aol.com]

Hey Guys
Taking all things into consideration and the comments from Ron,David & Al most of us will never go back to the drawing board so the simple wrapped string alternative on the BB & the Stwy B, I suggested is practical and an improvement to what is already there.
  Honestly Ron. I don't object to  the sound of the B scale except in places,the low tenor being the largest one,the second one is the kind of honky sound on the first bass note/last bass note no.20. Probably primarily the end of the bridge affect. I think it needs mass there.
 A big chunk of lead in the bridge end might help.
 I for one would enjoy hearing what Serge has described as an improvement and make up my own mind.
   Dale


-----


So, bottom line guys. The French piano maker Stephen Paulello "string with softer steel" isn't going to do much? 
 
I don't do any scale redesigning and thought this might be an easy fix :-( 
 
Al 
 
-------------------------------------------------- 
From: "David Love" <davidlovepianos at comcast.net> 
Sent: Sunday, December 20, 2009 1:19 PM 
To: <pianotech at ptg.org> 
Subject: Re: [pianotech] BB Mason and Tenor Cross over 
 
> Right but with increased tension also comes an increase in the Z factor 
> which also contributes to the tonal change which is, perhaps, a reason > that 
> simply matching tension doesn't really work in that area. You just get a 
> loud honk. I'm just wondering, do you actually hear BP% differences (I'm 
> not convinced that you do) or, in this case, is the change in tensile 
> strength manifested in some other factor that would balance out the > tension 
> difference? 
> 
> David Love 
> www.davidlovepianos.com 
> 
> 
> -----Original Message----- 
> From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On > Behalf 
> Of Ron Nossaman 
> Sent: Sunday, December 20, 2009 8:55 AM 
> To: pianotech at ptg.org 
> Subject: Re: [pianotech] BB Mason and Tenor Cross over 
> 
> David Love wrote: 
>> Which begs the question, does the tone come from the relative BP% or the 
>> relative tension. Seems that even if you use a wire that has a higher 
>> BP% the tension is still too low to match the other notes in that 
>> section. On the B you go from about 160lbs to about 120 lbs at the >> break. 
> 
> 
> Tension's easy, increase wire size. With low tensile strength 
> re-bar you likely just trade one tonal problem for another, 
> but hey, you might dislike the new problem less. 
> 
> The fact is that these pianos are just really bad scale 
> designs, and aren't going to be "fixed" without moving 
> bridges. Even then, doing it right would take you back to the 
> drawing board. 
> 
> Ron N 
> 
> 
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