The bell-tuning trumpet
Por Colin Bloch
The bell-tuned trumpet
A comparison of tuning patterns between bell-tuned and slide-tuned trumpets.
The bell-tuned, or tuning-bell trumpet, is a relatively recent development in trumpet technology and design. It is the purpose of this article to demonstrate the efficiency of this innovation in improving overall intonation.
By bell-tuned trumpets, we mean those whose main intonational adjustment is made at the junction of the bell and the valve cluster, as opposed to the more conventional methods using either a tuning slide, or a tuning shank fitted into the leadpipe. The initial section of the trumpet tubing, from the mouthpipe to the valve cluster, is of critical importance in determining the intonational characteristics, timbre and response of the instrument. This represents a length of approximately 46 cm on the C trumpet, and it is important that it be smooth and uninterrupted along its entire length.
We normally find three interruptions along this section of tubing.
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