|
Inside Diameter Inside Diameter refers to the measurement across the top of the mouthpiece cup. In the past, this measurement was displayed on mouthpiece comparison charts but the problem was that manufacturers generally never indicated where exactly that measurement was taken. Measuring a few thousandths of an inch into the cup can change that measurement drastically. That is why you will see two precise points at which GR measures Inside Diameter; r2 - end point of the bite radius r4 - .032" down from the high point of the rim
The diameter of the cup is a very important parameter and must match the player precisely for optimum results. A cup diameter that is too large for a particular player may cause endurance to suffer, articulations to be sluggish, sound to be dull, poor intonation between upper and lower registers, and range may be severely hindered. A cup diameter that is too small for a particular player may cause sound to be strained and thin, range to suffer, attacks may split, and the blow resistance will feel very high, almost like the player can not get air through the horn. Intonation may suffer as well. When the cup diameter matches the player, flexibilities may be more fluid, attacks improved, blow resistance more comfortable, improved endurance and range. The main improvements to look for are accuracy, articulation, and intonation.
|
