File:7 Bells, Musical Instrument Museum, Brussels.jpg

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Français : Trombone à sept pavillons / Adolphe Sax / Paris / 1876
Nederlands: Trombone met zeven bekers / Adolphe Sax / Parijs / 1876
English: Trombone with seven bells / Adolphe Sax / Paris / 1876

26 November 2006

This seven belled, seven horned beast was invented by Sax to be a chromatic horn. Each valve goes to a separate bell.

One problem of having valves in serial, rather than parallel, is that valve combinations tend to be out of tune. (On a modern horn, the third valve is tuned to a length which is based on a ratio of it's pipes compared with the rest of the instrument. If the player also presses the first valve, then the ratio of the rest of the instrument changes and the third valve pipe is too short). This is a clever way to solve the problem, although it seems like it would tend to be heavy.

At the Musical Instrument Museum in Brussels, Belgium
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Source Flickr: 7 Bells
Author Charles Hutchins
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