| These videos below will demonstrate how converting low tensioned high inharmonicity plain wires to properly designed bichord bass strings will correct tension and inharmonicity so that the 4:2 and 6:3 octave tests will more or less agree with each other. We apologize for the redundancy and occasional blabbering within the presentation. Video length +- 18 minutes | |
Before |
After |
Tension (red) and Inharmonicity (blue) |
Tension (red) and Inharmonicity (blue) |
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| The above two graphs are before (left) and after (right) scales
of a popular Japanese Manufacturer. The left scale is the "Economy Model"
circa 2000 to 2004. In 2010 we converted the bottom 6 plain wire notes to
bichord bass notes as represented in the graph on the right. We would have
liked to make the tensions higher but kept them a little low due to the plate
design.
If the videos do note load correctly right click and save to a download and launch from your computer. The .mov is bigger and of slightly better quality. |
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| Note: The octaves in the above videos were tuned using the 4:2 octave test. The noisy upper partials to which I keep refering are actually the 6th partial of the lower note colliding with the 3rd partial of the top note. | |
White Paper: Yamaha GA1 Low Tenor 6 Note Bichord Bass Retrofit |
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