----- Original Message ----- From: "Overs Pianos" <sec@overspianos.com.au> To: <pianotech@ptg.org> Sent: January 24, 2001 12:44 AM Subject: Re: Bass bridge question > Samuel Wolfenden wrote about the idea of designing scales with > increased spacing between adjacent notes in the strike scale. He also > constructed prototype instruments to investigate it, concluding that > there was no benefit. I have long held the view that the same would > apply to unnecessary flare in the bass scale at the bass bridge also. Thanks. I either missed that or forgot it. Could be either. > One possible benefit might be had where a piano exhibited a lower > than desirable impedance on the bass bridge at the cross. A greater > flare here would place the end of the bass bridge closer to the rim > on the bent side, eg. the Welmar 6'0" grand suffers from a poor > impedance match at the cross-over, as do some of the Boston grands, > with a very wide belly across the back end. Flaring the bridge layout > would place note C#29 (the last note in the bass in the case of the > Welmar) closer to the rim, thereby raising the 'board impedance to a > more acceptable level. Of course, a more sensible solution might be > to redesign the piano with a narrower belly at the bass end. The > instrument might be less costly in materials, yet better in > performance. Yes, but then you would have that big soundboard to amplify the sound from the strings. Del
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