>Interesting. I wonder anyway, by which mechanism the front >duplex section of the string is supposed to vibrate. It's simple leverage. The string, being a piece of wire, is stiff. As the speaking length flexes through it's vibrational excursion, it levers the duplex in the opposite direction on the fulcrum, which is the V bar. It works the other way too. Pluck a front duplex and the speaking length will sound at it's fundamental pitch (rather than the pitch of the duplex). Ron N
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